Technical Analysis 1 (TA1) Visual Inspection for Wheel Tractor Scraper {0372, 0374, 1000, 7000, 753S, 7565} Caterpillar

Technical Analysis 1 (TA1) Visual Inspection for Wheel Tractor Scraper {0372, 0374, 1000, 7000, 753S, 7565}

Usage:

44 06W

Wheel Tractor-Scraper: All

Introduction

Inspections are the most basic form of condition monitoring. They are easy to do and surprisingly effective at helping you spot equipment health issues. Proactive monitoring and analysis of equipment information will allow Dealers to effectively intervene before problems occur.

Note: Before adjusting product settings to comply with listed baseline TA1 values, consult SIS for the latest specification values.

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Table 1
Serial Number:	Inspector:	Temperature:
Model:	Work Order:	Time:
Engine S/N:	SMU:	Date:
Manufacture:		Unit Location:
Note: Review Machine & S.O.S. History and check for Active Service Letters prior to inspection.
Status of the Machine⁽¹⁾
The status recommendation of your Wheel Tractor Scraper is:

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⁽¹⁾	N = Normal, D = Down Machine, M = Monitor/Needs Attention

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Visual Inspection

1.0 Prepare Machine Inspection

Refer to "1.0 Inspection Preparation" section in "Inspection Reference" for more information for performing machine inspection preparation.

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Table 2
Sl.No.	Status⁽¹⁾	Description	Comments
1.1		Check with customer for operator complaints
1.2		Perform walk-around inspection
1.3		Perform Machine Inspection preparation
1.4		Download machine fault codes
1.5		Check Product Link
		Is machine equipped with Product Link?
		Is Product Link activated?
		Is Product Link functioning properly?
1.5		Observe engine exhaust colors
1.6		Listen for unusual noises

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⁽¹⁾	N = Normal, M = Monitor, A = Action, Blank = Not Applicable

2.0 Tractor

2.1 Tractor - Lower Level Inspection

Refer to "2.1 Tractor - Lower Level Inspections" section in "Inspection Reference" for more information for performing machine inspection preparation.

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Table 3
Sl.No.	Status⁽¹⁾	Description	Comments
2.1.1		Tires and rims
2.1.2		Final drives
2.1.3		Front differential, wheel spindles & service brake housing
2.1.4		Brake actuators
2.1.5		Tractor frame & bottom guards

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⁽¹⁾	N = Normal, M = Monitor, A = Action, Blank = Not Applicable

2.2 Tractor - Middle Level Inspection

Refer to "2.2 Tractor - Middle Level Inspections" section in "Inspection Reference" for more information for performing machine inspection preparation.

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Table 4
Sl.No.	Status⁽¹⁾	Description	Comments
2.2.1		Torque converter, transmission & transfer gears
2.2.2		Transmission pump, transmission oil filter & hydraulic system pilot oil filter
2.2.3		Elevator pump & cushion hitch pump
2.2.4		Implement / steering pump
2.2.5		Bail & bail cylinder
2.2.6		Air tank & air dryer
2.2.7		Steps and handrails
2.2.8		Work lights and hazard lights
2.2.9		Battery and battery cables

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⁽¹⁾	N = Normal, M = Monitor, A = Action, Blank = Not Applicable

2.3 Tractor - Upper-Level Inspection

Refer to "2.3 Tractor - Upper Level Inspections" section in "Inspection Reference" for more information for performing machine inspection preparation.

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Table 5
Sl.No.	Status⁽¹⁾	Description	Comments
2.3.1		Radiator, oil cooler & condenser
2.3.2		Radiator cap
2.3.3		Hoist/ejector & brake system hydraulic tank
2.3.4		Electric starting motor
2.3.5		Alternator, compressor, pulleys, belts & belt tensioner
2.3.6		Brake pump & ATAAC fan pump
2.3.7		Fuel lines, fuel pump, fuel filters & filter bases
2.3.8		Cylinder heads & valve covers
2.3.9		Fan motor, fan, fan guard & shroud
2.3.10		Steering system hydraulic tank & fuel tank
2.3.11		Steering check and combiner valve
2.3.12		Air cleaner assembly
2.3.13		Brake valve & HMU
2.3.14		Turbocharger
2.3.15		Exhaust manifold
2.3.16		Transmission, brake & engine oil coolers
2.3.17		Water pump
2.3.18		ATAAC & inlet manifold lines
2.3.19		ATAAC fan motor, fan, fan guard & shroud
2.3.20		Coolant lines & hoses
2.3.21		Cab exterior
2.3.22		Cab Interior

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⁽¹⁾	N = Normal, M = Monitor, A = Action, Blank = Not Applicable

3.0 Scraper

3.1 Scraper - Lower Level Inspection

Refer to "3.1 Scraper - Lower Level Inspections" section in "Inspection Reference" for more information for performing machine inspection preparation.

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Table 6
Sl.No.	Status⁽¹⁾	Description
3.1.1		Ejector
3.1.2		Ejector cylinder
3.1.3		Ejector support rollers, carrier rollers & guide rollers
3.1.4		Floor cylinder (Elevating Scraper)
3.1.5		Floor rollers (Elevating Scraper)
3.1.6		Cutting edges & side cutters
3.1.7		Auger seal (Auger Scraper)
3.1.8		Auger shoes & cutters (Auger Scraper)
3.1.9		Rear frame

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⁽¹⁾	N = Normal, M = Monitor, A = Action, Blank = Not Applicable

3.2 Scraper - Middle Level Inspection

Refer to "3.2 Scraper - Middle Level Inspections" section in "Inspection Reference" for more information for performing machine inspection preparation.

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Table 7
Sl.No.	Status⁽¹⁾	Description
3.2.1		Push plate & hook
3.2.2		Draft arm frame & bearings
3.2.3		Draft arm wear plates
3.2.4		Bowl lift cylinders
3.2.5		Apron
3.2.6		Apron lift arm
3.2.7		Apron lift cylinders
3.2.8		Elevator frame & linkage (Elevating Scraper)
3.2.9		Elevator chains & flights (Elevating Scraper)
3.2.10		Elevator chain adjustment idlers (Elevating Scraper)
3.2.11		Elevator chain rollers (Elevating Scraper)

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⁽¹⁾	N = Normal, M = Monitor, A = Action, Blank = Not Applicable

3.3 Scraper - Upper Level Inspection

Refer to "3.3 Scraper - Upper Level Inspections" section in "Inspection Reference" for more information for performing machine inspection preparation.

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Table 8
Sl.No.	Status⁽¹⁾	Description
3.3.1		Elevator speed reducer & drive sprockets (Elevating Scraper)
3.3.2		Auger motor & drive gear (Auger Scraper)
3.3.3		Fuel tank & fuel lines

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⁽¹⁾	N = Normal, M = Monitor, A = Action, Blank = Not Applicable

4.0 Scraper Power Pack

4.1 Scraper Power Pack - Lower Level Inspection

Refer to "4.1 Scraper Power Pack - Lower Level Inspections:" section in "Inspection Reference" for more information for performing machine inspection preparation.

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Table 9
Sl.No.	Status⁽¹⁾	Description
4.1.1		Tires and rims
4.1.2		Final drives
4.1.3		Brake actuators
4.1.4		Differential & bevel gear housing
4.1.5		Driveshaft
4.1.6		Torque converter, transmission & transfer gear

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⁽¹⁾	N = Normal, M = Monitor, A = Action, Blank = Not Applicable

4.2 Scraper Power Pack - Upper Level Inspection

Refer to "4.2 Scraper Power Pack - Upper Level Inspections:" section in "Inspection Reference" for more information for performing machine inspection preparation.

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Table 10
Sl.No.	Status⁽¹⁾	Description
4.2.1		Steps & handrails
4.2.2		Hood & platform
4.2.3		Power pack control panel
4.2.4		Radiator & aftercooler
4.2.5		Upper and lower radiator & aftercooler lines
4.2.6		Radiator cap
4.2.7		Fan, fan guard & shroud
4.2.8		Belts & belt tensioner
4.2.9		Front engine mounts
4.2.10		Water pump
4.2.11		Fuel lines, fuel priming pump, fuel filters & filter bases
4.2.12		Engine wiring harness
4.2.13		Electric starting motor
4.2.14		Engine air cleaner and precleaner
4.2.15		Transmission oil filter and filter base
4.2.16		Transmission pump & transmission hydraulic control valve
4.2.17		Alternator
4.2.18		Engine oil filters and filter base
4.2.19		Turbocharger
4.2.20		Exhaust manifold & muffler
4.2.21		Engine oil pan
4.2.22		Transmission oil tank
4.2.23		Batteries & battery cables

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⁽¹⁾	N = Normal, M = Monitor, A = Action, Blank = Not Applicable

5.0 Site Conditions

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Table 11
Sl.No.	Status⁽¹⁾	Description	Comments
5.1		Ambient Temperature
		NORMAL: −18 to 32°C (0 to 90°F)
		MONITOR: 32 to 46°C (90 to 115°F) or −18° to -29°C (0 to -20°F)
		ACTION: Above 46° C (115° F) or Below −29° C (−20° F)
5.2		Altitude
		NORMAL: 0 to 1524 m (0 to 5000 ft)
		MONITOR: 1524 to 3048 m (5000 to 10000 ft)
		ACTION: Above 3048 m (10000 ft)
5.3		Haul Road Grade
		NORMAL: Flat
		MONITOR: Mild
		ACTION: Steep
5.4		Haul Road Condition
		NORMAL: Positive Banking, Gradual Turns, Good Erosion Control
		ACTION: Negative Banking, Sharp Turns, Poor Erosion Control
5.5		Humidity
		NORMAL: Below 25%
		MONITOR: 25 to 60%
		ACTION: Above 60%
5.6		Air Quality
		NORMAL: No Dust
		MONITOR: Light Dust
		ACTION: Heavy Dust
5.7		Underfoot Condition
		NORMAL: Dry Flat Surface
		MONITOR: Moderate Grades, Mixture of Muddy / Dry Surfaces
		ACTION: Steep Grades, Muddy, Snow, Ice
5.8		Machine Utilization
		NORMAL: 0 to 10 Hours
		ACTION: Above 10 hours
5.9		Equipment Role
		NORMAL: Utility
		MONITOR: Support
		ACTION: Production
5.10		Working Material
		NORMAL: Uncompacted, Low Abrasion
		MONITOR: Moderately Compacted, Moderate Abrasion
		ACTION: High Abrasion, Compacted, Dense
5.11		Maintenance Practices
		NORMAL: Excellent
		MONITOR: Good
		ACTION: Poor
5.12		Primary Industries

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⁽¹⁾	N = Normal, M = Monitor, A = Action, Blank = Not Applicable

Inspection Reference

Inspection Benefits:

Minimizes downtime through scheduled maintenance
Locates potential problems
Finds overlooked problems
Enables scheduled maintenance and repairs
Lowers owning and operating costs

Guidelines

Wiring Harness Inspection Guidelines

Check for:

Tubes, hoses, and wiring harnesses rubbing against:

- One another

- Sharp corners

- Bolt heads

Tubes, hoses, and wiring harnesses not properly secured

- Missing clips and/or wire ties

- P-clips not attached

Harness Connector Inspection Guidelines

Check for connectors:

Not properly secured in place
Rubbing against machine frame
Rubbing against sharp edges

Implement Linkage Pin Inspection Guidelines

Check for:

Loose or broken flange mounting bolt
Elongated bolt hole in flange (hole is located behind pin retaining bolt)
Loose or missing pin retainer bolts
Irregular shaped pin bores

Hydraulic Cylinder Inspection Guidelines:

Check for:

Oil leaks indicated by dirt or oil buildup around the cylinder lip seal
Oil leaks at hose connections
Damage to cylinder rods
Damage or wear to linkage pins (refer to "Pin Inspection Guidelines" for inspection procedure)

1.0 Inspection Preparation

1.1 Check with customer for operator complaints

1.2 Perform walk-around inspection

Make sure no one is underneath the machine, around the machine, or on the machine; ensure that the area is free of personnel
Walk around the machine and inspect underneath the machine for visible signs of fluid leaks
Check all hydraulic oil, transmission oil, and gear case oil levels; if necessary, add oil to reach the minimum level for each system

1.3 Perform machine inspection preparation

Park the machine on a level surface in the recommended service position.
Make sure that the tractor transmission control is in the NEUTRAL position. Move the throttle control to the LOW IDLE position. If equipped, make sure that the scraper transmission selector shaft is in the NEUTRAL position.
Engage the parking brake.
Lower the bowl and the apron to the ground. Move the ejector to the forward position.
Place the cushion-hitch in the off position and lower the bail (if equipped). Turn the key start switch to the OFF position and remove the key. Remove the battery disconnect key/s and tag the machine out for safety.

1.4 Download machine fault codes

Download machine fault codes using Electronic Technician (ET)

1.5 Check Product Link

Is machine equipped with PL?
Is PL activated?
Is PL functioning properly?

1.6 Observe engine exhaust colors

Start the machine and observe exhaust colors:

White smoke after initial startup could indicate coolant in the engine cylinders
Blue smoke during startup may indicate oil in the engine cylinders
Continuous black smoke could indicate an improper air/fuel mixture
Continuous gray smoke may indicate a fuel timing problem

1.7 Listen for unusual noises

Excessive noise coming from engine compartment could indicate:

Fuel injector damage
Engine bearing damage
Valve train damage

Excessive noise coming from hydraulic pumps could indicate either:

Pump cavitation
A loose or failed bearing

Excessive noise coming from the transmission when traveling could indicate:

Pump cavitation
A loose or failed bearing
Clutch disc or gear damage

Excessive noise coming from the differentials/final drives and drive train when traveling could indicate:

Brake disc or gear damage
A loose or failed bearing

2.0 Tractor

2.1 Tractor - Lower Level Inspections

2.1.1 Tires and Rims

Check for:

Proper inflation
Cuts, cracks, splits, or bruises in the tread or sidewall area. Bumps or bulges may indicate tire separation
Cracks, pits from corrosion, or other visible damage to rims
Safe tread depth

- Tire cords or exposed fabric

- Uneven tread wear

2.1.2 Final Drives

Check for:

Oil leakage around the sealing surface between the axle cover and the planetary housing
Oil leakage around the sealing surface between the planetary housing and the final drive housing
Oil leakage around the final drive oil drain and fill plugs
Coolant leakage around the drain/fill plug for the brake coolant

2.1.3 Front Differential, Wheel Spindles & Service Brake Housing

Check front differential oil level:

If the oil level is low check the following areas for leaks:

- Sealing surface between the axle housing and the differential housing

- Duo-cone seal located between the final drive housing and the axle housing

- Oil leakage around the drain and fill caps

- Drain plugs located on the bottom of the differential housing

- Fill cap or sight gauge located at the rear of the differential housing

2.1.4 Brake Actuators

Check brake actuators for:

Leaks around hose connections
Rubbing, damaged, or worn hoses
Worn or damaged brake actuator linkage
Torn dust boots

2.1.5 Tractor Frame & Bottom Guards

Check for:

Damage to frame
Structural cracks
Cracked welds
Missing or damaged bottom guard mounting bolts
Damaged or missing bottom guards

2.2 Tractor - Middle Level Inspections

2.2.1 Torque Converter, Transmission, & Transfer Gear

Check these components and the area around them for:

Leaks around hose connections
Rubbing, damaged, or worn hoses
Rubbing, damaged, or worn wiring harnesses or connectors
Oil leakage around drain plugs
Oil or dirt buildup on the mating surfaces and bolted covers

2.2.2 Transmission Pump, Transmission Oil Filter & Hydraulic System Pilot Oil Filter

Check for:

Leaks around hose connections
Rubbing, damaged, or worn hoses
Rubbing, damaged, or worn wiring harnesses or connectors
Oil or dirt buildup on filter housings and filter bases
Oil leakage around drain plugs
Leaks between the cover and the filter housing
Leaks between the sealing surfaces of transmission charge pump and scavenge pump

2.2.3 Elevator Pump & Cushion Hitch Pump

Check for:

Leaks around hose connections
Rubbing, damaged, or worn hoses
Rubbing, damaged, or worn wiring harnesses or connectors

2.2.4 Implement/Steering Pump

Check for:

Leaks around hose connections
Rubbing, damaged, or worn hoses
Rubbing, damaged, or worn wiring harnesses or connectors

2.2.5 Bail and Bail Cylinder

Check bail cylinder for: (Refer to “Hydraulic Cylinder Inspection Guidelines” for inspection procedure)

Oil leaks indicated by dirt or oil buildup around the cylinder lip seal
Oil leaks at hose connections
Damage to cylinder rods

Check linkage pins for: (Refer to “Implement Linkage Pin Inspection Guidelines” for inspection procedure)

Loose, damaged, or worn pin joints
Elongated bolt hole in pin flange
Irregular shaped pin bores

Check push block for:

Damaged spring
Excessive wear or cracked welds

2.2.6 Air Tank & Air Dryer

Check for:

Loose or damaged hoses and connections
Loose or damaged hose clamps
Moisture in the air tanks by opening the air tank drain valves

- If moisture is present, the air desiccant cartridge inside the air dryer must be changed

2.2.7 Steps & Handrails

Ensure that steps and handrails are in place and check for:

Damaged, missing, or loose bolts
Damage to steps or handrails
Excessive dirt or debris

2.2.8 Work Lights & Hazard Lights

Check road lights, turn signals, hazard flashers, work lights, and other lights for:

Proper operation
Cracked or broken lenses
Damaged wiring harnesses
Loose or damaged mounting brackets

2.2.9 Batteries & Battery Cables

Check for:

Corrosion on battery posts and cable connections
Loose or improperly secure battery cables
Rubbing, damaged, or worn battery cables

- Pay particular attention to condition of “B+” battery cables and negative cable running from the battery to the disconnect switch

Loose or improperly secured battery hold downs
Dirt and debris buildup on and around batteries
Damaged or loose battery cover

2.3 Tractor - Upper Level Inspections

2.3.1 Hood and Platform

Check for:

Structural damage
Debris or excessive dirt on the steps and service platform
Loose or damaged bolted access covers
Proper function of access panel hinges and latches
Weak or damaged gas strut for hood support

2.3.2 Radiator, Hydraulic Oil Cooler, ATAAC & Condenser

Check for:

Plugged cores
Damaged fins
Cracked or damaged mounts

2.3.3 Radiator, Hydraulic Oil Cooler, ATAAC & Condenser Lines

Check for:

Rubbing, cracked, damaged, or worn hoses and tubes
Leaks around hose connections
Loose or damaged hose clamps
Improperly secured lines

2.3.4 Radiator Cap

Check:

If the radiator is cool, check the radiator cap gaskets for wear or for damage

2.3.5 Fan & Fan Guard

Check for:

Loose, damaged, or missing bolts
Loose or damaged wire fan guard
Loose or damaged fan shroud
Damaged, cracked, or missing fan blades

2.3.6 Belts and Belt Tensioners

Check for:

Worn, Cracked, or Frayed Belts
Proper Belt Tension
Damaged or worn belt tensioner
Worn or damaged pulleys
Loose, damaged, or missing pulley and belt tensioner mounting bolts

2.3.7 Front Engine Mounts

Check for:

Worn or damaged rubber mounts
Loose, damaged, or missing retaining bolts
Structural damage or weld cracks in the mounting frame

2.3.8 Water Pump

Check for:

Coolant leaks around water pump mounting flange
Coolant leaks through the weep hole in the water pump housing
Loose or damaged hose clamps
Rubbing, damaged, or worn coolant hoses
Loose or leaking coolant hose connections

2.3.9 Alternator & Air Conditioning Compressor

Check for:

Rubbing, damaged, or worn electrical harnesses
Loose or corroded wiring connections
Damaged or leaking air conditioning charging valves
Oil leaks around air conditioning compressor clutch

2.3.10 Air Cleaner Assembly & Precleaner

Check for:

Dirt and/or debris in the precleaner
Dirt and/or debris in the air cleaner inlet tube
Loose or damaged hose clamps securing air inlet tube, turbocharger air inlet tube, and dust ejector hose
Loose or damaged air cleaner cover latches
Cut or damaged turbo air inlet tube
Properly functioning air filter restriction indicator sensor

2.3.11 Fuel Lines, Priming Pump, Fuel Filters & Filter Bases

Check for:

Loose, cracked, or damaged mounts
Rubbing, damaged, or worn fuel lines
Loose or leaking fuel line connections
Fuel leaks around the filters and filter bases

2.3.12 Turbocharger

Check for:

Black soot around the areas where the turbocharger bolts to the exhaust manifold or to the exhaust pipe which would indicate:

- Loose connections at the joints

- Loose or broken mounting bolts

Oil leakage around the turbocharger oil line
Dirt tracks which may indicate air inlet or boost air leaks due to worn or damaged hoses.
Loose or damaged hose clamps at the air inlet tube and compressor housing connection
Damaged or missing turbocharger heat shield

2.3.13 Exhaust Manifold

Check for:

Black soot indicating a loose, broken, damaged connection around the following sealing surfaces:

- Where the exhaust manifold bolts to the cylinder head

- Clamps and baffles between manifold segments on each cylinder head

- Where the exhaust manifold bolts to the turbocharger turbine inlet

Cracks or other damage to the exhaust manifold housing and muffler
Loose or broken manifold mounting bolts
Corrosion or damage to the muffler
Loose or broken muffler clamps or mounting bolts

2.3.14 Engine Wiring Harness

Check engine harness for the following:

Loose P-clips / broken wire ties
Cracked or broken connectors
Damaged wiring harnesses
Loose or damaged mounting brackets

2.3.15 Engine Oil Pan

Check for oil on the bottom of the oil pan:

If oil is found on the pan, inspect the following:

- Check for leaks around the oil pan mounting flange

- Check for leaks around the oil level sensor, drain plug, dipstick tube, turbo lube return & other component connection points in the oil pan

- If the oil pan is not visible, check the bottom guard for oil residue. Oil leakage on the guard may be an indication of an engine oil leak.

2.3.16 Cylinder Heads & Valve Covers

Check for:

Oil and dust buildup around the sealing surfaces between:

- Valve covers & rocker boxes

- Rocker boxes & cylinder heads

- Cylinder head & engine block

Leakage in these areas would indicate:

- Loose connection at the joint

- Damaged gasket or seal

- Improperly torqued bolts

Dirt and debris buildup in engine oil breather

2.3.17 Air Compressor

Check for:

Leaks around hose connections
Rubbing, damaged, or worn hoses
Rubbing, damaged, or worn wiring harnesses or connectors

2.3.18 Cushion Hitch Accumulator

Check for:

Leaks around hose connections
Rubbing, damaged, or worn hoses
Damaged accumulator charging valve

2.3.19 Cushion Hitch & Cushion Hitch Load Cylinder

Check load cylinder for:

Oil leaks indicated by dirt or oil buildup around the cylinder lip seal
Oil leaks at hose connections
Damage to cylinder rod

Check linkage pins for:

Loose, damaged, or worn pin joints
Loose or broken retaining bolts
Broken or damaged grease lines or grease fittings
Irregular shaped pin bores
Worn or damaged pins

- (Refer to “Implement Linkage Pin Inspection Guidelines” for inspection procedure)

2.3.20 Steering Linkage, Steering Cylinders & Steering Servo Cylinder

Check steering cylinder for:

Oil leaks indicated by dirt or oil buildup around the cylinder lip seal
Oil leaks at hose connections
Damage to cylinder rod

Check steering pins for:

Loose, damaged, or worn pin joints
Loose or broken retaining bolts
Broken or damaged grease lines or grease fittings
Irregular shaped pin bores
Worn or damaged pins

- (Refer to “Implement Linkage Pin Inspection Guidelines” for inspection procedure)

2.3.21 Cab Exterior

Check for:

Bent or damaged cab structure
Cracked or broken glass
Damaged or missing mirrors
Worn or broken windshield wiper arm or wiper blade

2.3.22 Cab Interior

Check for:

Excessive dirt in cab air filter
Proper function of seat and seat belt
Wear or damage to seat belt
Seat belt replacement date
Proper function of door and latches
Worn or broken window latches or slides
Damaged or inoperable gauges and controls
Proper function of Backup alarm

3.0 Scraper

3.1 Scraper - Lower Level Inspections

3.1.1 Ejector

Check for:

Damage to frame and rear support braces
Structural cracks
Cracked welds
Proper clearance between ejector and scraper bowl floor

3.1.2 Ejector Cylinder

Check cylinder for:

Oil leaks indicated by dirt or oil buildup around the cylinder lip seal
Damage to cylinder rod
Oil leaks at hose connections
Worn or damage hoses
Loose, damaged, or worn pin joints
Irregular shaped pin bores
Worn or damaged pins
Loose or broken retaining bolts

- (Refer to “Implement Linkage Pin Inspection Guidelines” for inspection procedure)

3.1.3 Ejector Support Rollers, Carrier Rollers & Guide Rollers

Check rollers for:

Grease leaking from sealing surface between the front cover and the roller
Grease leaking from lip seal located on the back side of the roller
Excessive wear on the surfaces where the roller rides on the guides or the bottom wear surface of the bowl.
Excessive wear on the guides or surface where carrier roller rides on the bowl
Loose or damaged mounting bolts

3.1.4 Floor Cylinder (Elevating Scraper)

Check cylinder for:

Oil leaks indicated by dirt or oil buildup around the cylinder lip seal
Damage to cylinder rod
Oil leaks at hose connections
Worn or damage hoses
Loose, damaged, or worn pin joints
Irregular shaped pin bores
Worn or damaged pins
Loose or broken retaining bolts

- (Refer to “Implement Linkage Pin Inspection Guidelines” for inspection procedure)

3.1.5 Floor Rollers (Elevating Scraper)

Check rollers for:

Grease leaking from sealing surface between the front cover and the roller
Grease leaking from lip seal located on the back side of the roller
Excessive wear on the surfaces where the roller rides on the guides or the bottom wear surface of the bowl.
Excessive wear on the guides or surface where carrier roller rides on the bowl
Loose or damaged mounting bolts

3.1.6 Cutting Edges & Side Cutters

Check for:

Excessive wear on cutting edges
Excessive wear on side cutters
Loose or damaged mounting bolts

3.1.8 Auger Seal (Auger Scraper)

Check for:

Excessive wear on cutting edges
Excessive wear on side cutters
Loose or damaged mounting bolts

3.1.9 Rear Frame

Check for:

Damage to frame
Structural cracks
Cracked welds
Damaged or missing bottom guards

3.2 Scraper - Middle Level Inspections

3.2.1 Push Plate & Hook

Check for:

Loose, missing, or broken mounting blocks, mounting bolts, and retaining pins
Cracks or damage to the hook and hook frame
Structural damage to the push plate

3.2.2 Draft Arm Frame & Bearings

Check for:

Structural cracks, cracked welds, or damage to draft arm frame
Loose or missing draft arm flange bolts
Missing or damaged guards
Excessive wear in the trunion/draft arm bearing socket
Missing or loose bearing cap bolts
Leaks around hose connections
Rubbing, damaged, or worn hoses

3.2.3 Draft Arm Wear Plates

Check for:

Excessive clearance between the wear plate welded to the scraper bowl and the shoe attached to the inside surface of the draft arm
Check for loose or missing shoe mounting bolts
Excessive wear on the wear plate

3.2.4 Bowl Lift Cylinders

Check cylinder for:

Oil leaks indicated by dirt or oil buildup around the cylinder lip seal
Damage to cylinder rod
Oil leaks at hose connections
Worn or damage hoses
Broken or damaged grease lines or grease fittings
Loose, damaged, or worn pin joints
Irregular shaped pin bores
Worn or damaged pins
Loose or broken retaining bolts

- (Refer to “Implement Linkage Pin Inspection Guidelines” for inspection procedure)

3.2.5 Apron

Check for:

Excessive wear in the trunion/apron bearing socket
Missing or loose bearing cap bolts
Structural cracks, cracked welds, or damage to the apron
Loose, damaged, or worn linkage pin joints
Irregular shaped pin bores
Worn or damaged pins
Loose or broken pin retaining bolts

- (Refer to “Implement Linkage Pin Inspection Guidelines” for inspection procedure)

3.2.6 Apron Lift Arm

Check for:

Structural cracks, cracked welds, or damage to the apron lift arm
Broken or damaged grease lines or grease fittings
Loose, damaged, or worn linkage pin joints
Irregular shaped pin bores
Worn or damaged pins
Loose or broken pin retaining bolts

- (Refer to “Implement Linkage Pin Inspection Guidelines” for inspection procedure)

3.2.7 Apron Lift Cylinder

Check cylinder for:

Oil leaks indicated by dirt or oil buildup around the cylinder lip seal
Damage to cylinder rod
Oil leaks at hose connections
Worn or damage hoses
Broken or damaged grease lines or grease fittings
Loose, damaged, or worn pin joints
Irregular shaped pin bores
Worn or damaged pins
Loose or broken retaining bolts

- (Refer to “Implement Linkage Pin Inspection Guidelines” for inspection procedure)

3.2.8 Elevator Frame & Linkage (Elevating Scraper)

Check for:

Structural cracks, cracked welds, or damage to the elevator frame
Damage to the elevator guard
Broken or damaged grease lines or grease fittings
Loose, damaged, or worn linkage pin joints
Irregular shaped pin bores
Worn or damaged pins
Loose or broken pin retaining bolts

- (Refer to “Implement Linkage Pin Inspection Guidelines” for inspection procedure)

3.2.9 Elevator Chain & Flights (Elevating Scraper)

Check for:

Excessive slack in the elevator chain
Worn or damaged chain links
Worn, damaged, or missing chain link lock bolts
Loose, worn, or damaged flights
Loose or missing flight mounting bolts

3.2.10 Elevator Chain Alignment Idlers (Elevating Scraper)

Check for:

Loose or damaged bearings
Grease leaking from sealing surface between the front cover and the roller
Grease leaking from lip seal located on the backside of the roller
Excessive wear on the surfaces where the chain rides on the roller
Loose, damaged, or missing mounting bolts
Broken or damaged grease fittings

3.2.11 Elevator Chain Rollers (Elevating Scraper)

Check for:

Loose or damaged bearings
Oil leakage from the Duo-cone seals located on each side of the chain roller
Oil leakage from the oil level plugs and the drain/fill plugs
Excessive wear on the surfaces where the chain rides on the roller
Loose or damaged mounting bolts

3.3 Scraper - Upper Level Inspections

3.3.1 Elevator Speed Reducer & Drive Sprockets (Elevating Scrapers)

Check for:

Oil leaks at hose connections
Worn or damage hoses
Oil or dirt buildup on the mating surfaces of speed reducer and drive motor
Oil leakage from the oil level plug, drain plug and fill plug
Oil leakage from the Duo-cone seal located between the speed reducer and the sprocket output drive

Inspect sprocket for:

Broken or chipped teeth
Sharp tips on sprocket teeth

- Sharp tips on teeth indicate excessive sprocket wear

Loose or missing mounting bolts

3.3.2 Auger Motor & Drive Gear (Auger Scraper)

Check for:

Oil leaks at hose connections
Worn or damage hoses
Oil or dirt buildup on the mating surfaces of auger drive gear and drive motor
Oil leakage from the Duo-cone seal located between the auger drive gear and the auger output drive
Oil leakage from the drain plug and fill plug
Damaged or leaking sight gauge

3.3.3 Fuel Tank & Fuel Lines

Check for:

Rubbing, damaged, or worn fuel lines
Loose or leaking fuel line connections
Structural damage to tank or welds
Plugged breather
Damaged fill cap or fill cap seal
Worn or damaged rubber mounts

4.0 Scraper Power Pack

4.1 Scraper Power Pack - Lower Level Inspections:

4.1.1 Tires and Rims

Check for:

Proper inflation
Cuts, cracks, splits, or bruises in the tread or sidewall area. Bumps or bulges may indicate tire separation
Cracks, pits from corrosion or other visible damage to rims
Safe tread depth

- Tire cords or exposed fabric

- Uneven tread wear

4.1.2 Final Drives

Check for:

Oil leakage around the sealing surface between the axle cover and the planetary housing
Oil leakage around the sealing surface between the planetary housing and the final drive housing
Oil leakage around the final drive oil drain and fill plugs
Coolant leakage around the drain/fill plug for the brake coolant

4.1.3 Brake Actuators

Check brake actuators for:

Leaks around hose connections
Rubbing, damaged, or worn hoses
Worn or damaged brake actuator linkage
Torn dust boots

4.1.4 Differential & Bevel Gear Housing

Check differential oil level:

If the oil level is low check the following areas for leaks:

- Sealing surface between the axle shaft guard and the bearing retainer

- Sealing surface between the bearing retainer and the differential housing cover

- Sealing surface between the differential housing cover and the differential housing

- Oil leakage around the differential drain plug

- Sealing surface where the oil fill tube connects to the differential housing

- Sealing surface between the pinion bearing retainer and the bevel gear housing

Check for:

Loose or damaged differential mounting bolts

4.1.5 Driveshaft

Check for:

Loose or missing U-joint retainer bolts
Worn U-joints
Grease leaking from U-joint seals
Oil leaks indicated by dirt or oil buildup around the pinion lip seal

4.1.6 Torque Converter, Transmission, & Transfer Gear

Check these components and the area around them for:

Leaks around hose connections
Rubbing, damaged, or worn hoses
Rubbing, damaged, or worn wiring harnesses or connectors
Oil leakage around drain plugs
Oil or dirt buildup on the mating surfaces and bolted covers
Driveshaft yoke seals

4.2 Scraper Power Pack - Upper Level Inspections:

4.2.1 Steps & Handrails

Ensure that steps and handrails are in place and check for:

Damaged, missing, or loose bolts
Damage to steps or handrails
Excessive dirt or debris

4.2.2 Hood & Platforms

Check for:

Structural damage
Debris or excessive dirt on the steps and service platform
Loose or damaged bolted access covers
Proper function of access panel hinges and latches

4.2.3 Power Pack Control Panel

Check for:

Damaged or inoperable gauges and controls
Proper function of access panel sliding door and latches

4.2.4 Radiator and Aftercooler

Check for:

Plugged cores
Damaged fins
Plugged or damaged screens
Rubbing, damaged, or worn hoses and tubes
Leaks around hose connections
Loose or damaged hose clamps
Cracked or damaged mounts

4.2.5 Upper & Lower Radiator and Aftercooler Lines

Check for:

Rubbing, damaged, or worn hoses and tubes
Leaks around hose connections
Loose or damaged hose clamps
Improperly secured lines

4.2.6 Radiator Cap

If the radiator is cool, check the radiator cap gaskets for wear or for damage

4.2.7 Fan, Fan Guard & Shroud

Check for:

Loose, damaged, or missing bolts
Loose or damaged wire fan guard
Loose or damaged fan shroud
Damaged, cracked, or missing fan blades

4.2.8 Belts & Belt Tensioners

Check for:

Worn, Cracked, or Frayed Belts
Proper Belt Tension
Damaged or worn belt tensioner
Worn or damaged pulleys
Loose, damaged, or missing pulley and belt tensioner mounting bolts

4.2.9 Front Engine Mounts

Check for:

Worn or damaged rubber isolator ring
Loose, damaged, or missing mounting bolts
Structural damage or weld cracks in the mounting frame

4.2.10 Water Pump

Check for:

Coolant leaks around water pump mounting flange
Coolant leaks through the weep hole in the water pump housing
Loose or damaged hose clamps
Rubbing, damaged, or worn coolant hoses
Loose or leaking coolant hose connections

4.2.11 Fuel Lines, Fuel Priming Pump, Fuel Filters & Filter Bases

Check for:

Loose, cracked, or damaged mounts
Rubbing, damaged, or worn fuel lines
Loose or leaking fuel line connections
Fuel leaks around the filters and filter bases

4.2.12 Engine Wiring Harness

Check engine harness for the following:

Loose P-clips / broken wire ties
Cracked or broken connectors
Damaged wiring harnesses
Loose or damaged mounting brackets

4.2.13 Electric Starting Motor

Check for:

Damage or wear to the wiring harness
Loose or damaged connections at the electric starting motor and starting motor solenoid
Proper operation of the electric starting motor

- Listen for grinding or unusual noises when starting the engine

4.2.14 Engine Air Cleaner & Precleaner

Check for:

Dirt and/or debris in the precleaner
Loose or damaged hose clamps securing air inlet tube, turbocharger air inlet tube, and dust ejector hose
Loose or damaged air cleaner cover latches
Cut or damaged turbo air inlet tube
Properly functioning air filter restriction indicator sensor

4.2.15 Transmission Oil Filter & Filter Base

Check for:

Leaks between oil filter base and the torque converter housing manifold
Oil leakage around the drain plug
Leaks between the cover and the filter housing

4.2.16 Transmission Pump & Transmission Hydraulic Control Valve

Check for:

Leaks around hose and tube connections
Rubbing, damaged, or worn hoses
Rubbing, damaged, or worn wiring harnesses or connectors
Leaks between the sealing surfaces of transmission charge pump, manifold, and scavenge pump

4.2.17 Alternator

Check for:

Rubbing, damaged, or worn electrical harnesses
Loose or corroded wiring connections

4.2.18 Engine Oil Filter and Filter Base

Check for:

Cracked or damaged mounts
Rubbing, damaged, or worn lines
Leaks around the filter and filter base

4.2.19 Turbocharger

Check for:

Oil leakage around the turbocharger oil lube line and return line
Dirt tracks which may indicate air inlet or boost air leaks due to worn or damaged hoses
Loose or damaged hose clamps at the air inlet tube and compressor housing connection
Black soot around the areas where the turbocharger bolts to the exhaust manifold or attaches to the exhaust pipe which would indicate:

- Loose connections at the joints

- Loose or broken mounting bolts

4.2.20 Exhaust Manifold & Muffler

Check for:

Cracks or other damage to the exhaust manifold housing and muffler
Black soot indicating a loose, broken, damaged connection around the following sealing surfaces:

- Where the exhaust manifold bolts to the cylinder head

- Clamps and baffles between manifold segments on each cylinder head and muffler

- Where the exhaust manifold bolts to the turbocharger

- Where the exhaust pipe attaches to the turbocharger turbine outlet and to the muffler

4.2.21 Engine Oil Pan

Check for oil on the bottom of the oil pan.

If oil is found on the pan, inspect the following:

- Check for leaks around the oil pan mounting flange

- Check for leaks around the oil level sensor, drain plug, dipstick tube, turbo lube return & other component connection points in the oil pan

4.2.22 Transmission Oil Tank

Check for:

Worn or damaged rubber mounts
Loose tank mounting bolts
Structural cracks on frame mounting brackets
Breather for dirt and debris buildup
Oil lines for leaks and loose or damaged connections
Sight glass for damage or leaks
Damaged fill cap or fill cap seal

4.2.23 Batteries & Battery Cables

Check for:

Corrosion on battery posts and cable connections
Loose or improperly secure battery cables
Loose or improperly secured battery hold downs
Dirt and debris buildup on and around batteries
Damaged or loose battery cover
Rubbing, damaged, or worn battery cables

- Pay particular attention to condition of “B+” battery cables and negative cable running from the battery to the disconnect switch

Performance Checks

Hydraulic Performance Checks

Show/hide table

Table 12
Status⁽¹⁾	Description		Specification	Actual	Comments
	Ejector Clearance Check
	Cylinder speed Check
		Bowl Raise (Ground Level to Maximum Height)
		Apron Lift (Full lowered to Maximum Height)
		Floor Travel (Full Forward to Full Rearward)
		Ejector Travel (Full Forward to Rear Position)
		Elevator Speed (One Revolution)
	Cylinder Drift Check
		Oil Temperature
		Bowl Cylinders
		Apron Cylinder