Technical Analysis 1 (TA1) Visual Inspection for Motor Grader {0372, 1000, 7000, 753T, 7565} Caterpillar


Technical Analysis 1 (TA1) Visual Inspection for Motor Grader {0372, 1000, 7000, 753T, 7565}

Usage:

120 10R


Motor Grader
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.

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 Motor Grader is:   
(1) N = Normal, D = Down Machine, M = Monitor/Needs Attention

Creating an Electronic Copy

Use the following procedure to create an editable electronic copy from SIS web.

  1. Click format to print.

  2. Save the document as an HTML format.

  3. Open the document with Microsoft Word.

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.

Table 2
Sl.No.  Status(1)  Description  Comments 
1.1    Check with customer for operator complaints   
1.2    Prepare the machine for the inspection   
1.3    Perform walk-around inspection   
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   
1.6    Observe engine exhaust colors   
1.7    Listen for unusual noises   
(1) N = Normal, M = Monitor, A = Action, Blank = Not Applicable

2.0 Lower-Level Inspection

Refer to "2.0 Lower-Level Inspections" section in "Inspection Reference" for more information for performing lower-level inspection.

Table 3
Sl.No.  Status(1)  Description  Comments 
2.1    Tires and rims   
2.2    Front Wheels & Spindles/Wheel Drives   
2.3    Axle Arms & Kingpins   
2.4    Wheel Lean Cylinder & Lean Bar   
2.5    Front Axle   
2.6    Steering Cylinders, Tie Rods & Linkages   
2.7    Articulation Joints & Bearings   
2.8    Secondary Steering Pump & Motor   
2.9    Brake & Fan Hydraulic Pump & Control Valve   
2.10    Drive Shaft & Parking Brake   
2.11    Front & Rear Machine Frames   
2.12    Bottom Guard   
2.13    Transmission & Parking Brake   
2.14    Tandem Drives, Service Brakes & Wheels   
2.15    Final Drives   
2.16    Rear Differential Housing   
(1) N = Normal, M = Monitor, A = Action, Blank = Not Applicable

3.0 Middle-Level Inspection

Refer to "3.0 Middle-Level Inspections:" section in "Inspection Reference" for more information for performing middle-level inspection.

Table 4
Sl.No.  Status(1)  Description  Comments 
3.1    Work Lights   
3.2    Rear Brake & Directional Lights   
3.3    Steps & Handrails   
3.4    Fuel Tank   
3.5    Articulation Cylinders   
3.6    Cab Mounts   
3.7    Cab Exterior   
3.8    Service Brakes & Parking Brake Accumulators   
3.9    Cooling Fan & Hydraulic Motor   
3.10    Implement & AWD Control Valve   
3.11    Implement & Steering Control Valves   
3.12    Hood & Platform   
3.13    AWD Hydraulic Pump   
3.14    Engine Oil Pan   
(1) N = Normal, M = Monitor, A = Action, Blank = Not Applicable

4.0 Upper-Level Inspection

Refer to "4.0 Upper-Level Inspections:" section in "Inspection Reference" for more information for performing upper-level inspection.

Table 5
Sl.No.  Status(1)  Description  Comments 
4.1    Upper Radiator, Air Inlet, Oil Cooler & Aftercooler Lines   
4.2    Lower Radiator, Aftercooler & Condenser Lines   
4.3    Radiator, Oil Cooler, Condenser & Aftercooler   
4.4    Radiator Cap   
4.5    Hydraulic Tank   
4.6    Batteries & Battery Cables   
4.7    Fuel System Lines, Fuel Pumps & Filter Bases   
4.8    Cylinder Head & Valve Cover   
4.9    Intake Manifold   
4.10    Engine & Transmission Mounts   
4.11    Transmission Oil Cooler   
4.12    Pulleys, Belts, Water Pump, Compressor Clutch & Alternator   
4.13    Precleaner & Air Cleaner   
4.14    Turbocharger   
4.15    Exhaust Manifold   
4.16    Transmission, Parking Brake & Power Train Pumps   
4.17    Cab Interior   
(1) N = Normal, M = Monitor, A = Action, Blank = Not Applicable

5.0 Implement/Attachment Inspection

Refer to "5.0 Implement/Attachment Inspections:" section in "Inspection Reference" for more information for performing implement/attachment inspection.

Table 6
Sl.No.  Status(1)  Description  Comments 
5.1    Moldboard & Blade   
5.2    Blade Sideshift Cylinder   
5.3    Blade Tip Cylinder   
5.4    Circle Gears   
5.5    Circle Drive Motor   
5.6    Circle Drive Swivel   
5.7    Blade Lift Cylinder & Lock Bars   
5.8    Centershift Cylinder   
5.9    Centershift Lock   
5.10    Blade Cushion Accumulator   
5.11    Drawbar   
5.12    Ripper/Scarifier Lift Cylinder   
5.13    Ripper/Scarifier   
(1) N = Normal, M = Monitor, A = Action, Blank = Not Applicable

6.0 Site Conditions

Table 7
Sl.No.  Status(1)  Description  Comments 
6.1    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)  
6.2    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)  
6.3    Haul Road Grade   
NORMAL: Flat  
MONITOR: Mild  
ACTION: Steep  
6.4    Haul Road Condition   
NORMAL: Positive Banking, Gradual Turns, Good Erosion Control  
ACTION: Negative Banking, Sharp Turns, Poor Erosion Control  
6.5    Humidity   
NORMAL: Below 25%  
MONITOR: 25 to 60%  
ACTION: Above 60%  
6.6    Air Quality   
NORMAL: No Dust  
MONITOR: Light Dust  
ACTION: Heavy Dust  
6.7    Underfoot Condition   
NORMAL: Dry Flat Surface  
MONITOR: Moderate Grades, Mixture of Muddy / Dry Surfaces  
ACTION: Steep Grades, Muddy, Snow, Ice  
6.8    Machine Utilization   
NORMAL: 0 to 10 Hours  
ACTION: Above 10 hours  
6.9    Equipment Role   
NORMAL: Utility  
MONITOR: Support  
ACTION: Production  
6.10    Working Material   
NORMAL: Uncompacted, Low Abrasion  
MONITOR: Moderately Compacted, Moderate Abrasion  
ACTION: High Abrasion, Compacted, Dense  
6.11    Maintenance Practices   
NORMAL: Excellent  
MONITOR: Good  
ACTION: Poor  
6.12    Primary Industries   
(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

  • Check for 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 machine inspection preparation

  • Be sure that the area is free of personnel. Make sure no one is underneath the machine, around the machine, or on the machine.

  • Turn the key to the ON position to check fluid levels using the monitor. If fluid levels cannot be checked using the monitor, manually check the engine oil, hydraulic oil, and coolant levels.

  • Park the machine in the standard service position

1.3 Perform safety/preparatory inspection

1.4 Download Fault Codes

  • Download machine fault codes using either of the following methods:

- Electronic Technician (ET)

- Messenger Display (if equipped)

1.5 Check Product Link (https://productsupportglobalcontent.cat.com/cda/files/712700/7/Product%20Link%20Dealer%20Validation.pdf)

  • Is machine equipped with Product Link

  • Is Product Link activated

  • Is Product Link 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 pump could indicate either:

- Pump cavitation

- A loose or failed bearing

2.0 Lower-Level Inspections

2.1 Tires and Rims

  • 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

2.2 Front Wheels & Spindles/Wheel Drives

  • Lubricant leaks from spindle back cover, lube port or wheel hub seals

  • Hydraulic oil leaks from all wheel drive motor, (clutch inside wheel drive) hydraulic lines & fittings (If equipped)

- Tread worn down to the built-in wear indicators

- Tire cords or exposed fabric

- Uneven tread wear

2.3 Axle Arms & Kingpins

Check kingpins and lean bearings for:

  • Excessive play or loose fasteners

  • Damaged or missing grease fittings

  • Proper lubrication

Check axle arms for:

  • Structural damage

  • Loose tilt pin retaining bolts

2.4 Wheel Lean Cylinder & Lean Bar

  • 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 fasteners & grease fittings

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

2.5 Front Axle

  • Check inner & outer axle oscillation bearings for proper lubrication or damage

  • Check Axle for structural damage or weld cracks

2.6 Steering Cylinders, Tie Rods & Linkages

  • Oil leaks indicated by dirt or oil buildup around the cylinder lip seal

  • Oil leaks at hose connections

  • Damage to cylinder rods

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

  • Loose or damaged linkages/fasteners

- Check for cracked or blown out grease boots

- Check tie rod adjustment retainers

2.7 Articulation Joints & Bearings

  • Loose or broken retaining bolts

  • Irregular shaped pin bores

  • Broken or damaged grease lines or grease fittings

2.8 Secondary Steering Pump & Motor

  • Leaks around hose connection points, tubing flanges, bolts

  • Rubbing, damaged, or worn hoses

  • Loose or damaged mounting bracket

  • Rubbing, damaged, or worn wiring, harnesses, or connectors

  • Loose wiring connections

2.9 Brake & Fan Hydraulic Pump & Control Valve

  • Leaks around hose connection points, tubing flanges, bolts

  • Rubbing, damaged, or worn hoses

  • Rubbing, damaged, or worn wiring harnesses or connectors

  • Loose or damaged hose clamps on main pump suction lines

2.10 Drive Shaft & Parking Brake

  • Loose or missing U-joint retainer bolts

  • Worn or loose U-joints

- Use a pry bar to pry between yoke and U-joint to check for movement. Movement in these areas would indicate excessive wear.

  • Grease leaking from U-joint seals

- Grease leakage in these areas would indicate possible seal damage.

2.11 Front & Rear Machine Frames

  • Damage to frame

  • Structural cracks

  • Cracked welds

2.12 Bottom Guard

  • Loose, damaged, or missing bolts

  • Damaged hinges

  • Damaged or missing pins/cotters

  • Structural damage or cracks around welded joints

  • Oil leaks indicated by dirt and oil buildup on the underneath surface and edges of the bottom guards

- Oil buildup in this area would indicate possible leaks from components located above the guard.

2.13 Transmission & Parking Brake

  • Sealing surfaces of transmission case

  • Transmission output shaft

  • Transmission oil filter and oil filter base

  • Structural damage or cracks around welded joints

  • Sealing surface between transmission housing and parking brake housing

2.14 Tandem Drives, Service Brakes & Wheels

  • Duo-Cone seal located between the spindle and the wheel housing

  • Sealing surface between the tandem housing and the brake housing cover

  • Sealing surface between the brake housing cover and the brake housing

  • Brake wear indicator

  • Hydraulic brake lines

  • Drain plug for the tandem drive

2.15 Final Drives

  • Sealing surface between the final drive housing and the axle housing

  • Sealing surface between the ring gear and the axle housing

  • Sealing surface between the final drive housing and the tandem drive housing

2.16 Rear Differential Housing

  • Check for loose or damaged axle mounting bolts.

  • Check differential housing for leaks in the following areas:

- Sealing surface between the planetary housing and the differential housing.

- Sealing surface between the drive shaft and the differential housing

- Area around the drain and fill plugs.

3.0 Middle-Level Inspections:

3.1 Work Lights

  • Proper operation

  • Cracked or broken lenses

  • Loose or damaged mounting brackets

  • Damaged wiring harnesses or connectors

3.2 Rear Brake & Directional Lights

Check turn signals, hazard flashers, brake lights for:

  • Proper operation

  • Cracked or broken lenses

  • Loose or damaged mounting brackets

  • Damaged wiring harnesses or connectors

3.3 Steps & HandrailsEnsure that steps and handrails are in place:

  • Damaged, missing, or loose mounting hardware, bolts & brackets

  • Damage to steps, walkways, or handrails

  • Excessive dirt or debris

3.4 Fuel Tank

  • Leaks

  • Loose hose clamps on crossover tubes or supply/return lines

  • Structural damage to tank, mounts, welds

  • Damaged or missing fill cap seals

  • Damaged or missing breather screen

  • Dirt or debris plugging breather

3.5 Articulation Cylinders

  • 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 “Implement Linkage Pin Inspection Guidelines” for inspection procedure.

3.6 Cab Mounts

  • Loose or damaged mounting bolts

  • Damaged washers

  • Cracked or damaged mount brackets

  • Wear, damage, cracking of upper and lower rubber support pads

- There should be no metal to metal contact.

3.7 Cab Exterior

  • Bent or damaged cab structure

  • Cracked or broken glass

  • Damaged or missing mirrors

  • Worn or broken window wiper arms or wiper blades

3.8 Service Brake & Parking Brake Accumulators

  • Leaks around connection points for hoses

  • Rubbing, damaged, or worn hoses

  • Damaged charging valves

3.9 Cooling Fan & Hydraulic Motor

  • Loose, damaged, or missing bolts

  • Loose, damaged wire fan guard

  • Loose, damaged fan shroud

  • Damaged, cracked, or missing engine fan blade

  • Oil leaks at hose connections

  • Rubbing, damaged, or worn hoses

3.10 Implement & AWD Control Valves

  • Check under the implement and AWD cover for hydraulic oil leaks from the control valve

3.11 Implement & Steering Control Valves

  • Leaks around connection points for hose and control valve components

  • Rubbing, damaged, or worn hoses

  • Rubbing, damaged, or worn wiring harnesses and connectors

3.12 Hood & Platform

  • Proper function of hood raise cylinder

  • Debris or excessive dirt on service platform ventilation screen

  • Loose, damaged ventilation screens

  • Proper function of side access panels, latches

3.13 AWD Hydraulic Pump

  • Check for leaks at:

- Mating surfaces at rear engine gear housing, adjacent pump sections & control valve

- Hydraulic hose connections

  • Check control valve wiring harness & electrical connections

- Refer to “Wiring Harness Inspection Guidelines” & “Electrical Connections Inspection Guidelines” for inspection procedure.

3.14 Engine Oil Pan

  • Check for oil accumulation around the mounting flange of the oil pan. If oil is found, inspect the following:

- Check for leaks around the oil pan mounting flange.

- Check for leaks around the oil level sensor, oil filter housing, dipstick tube, Turbo lubrication return line, and so on.

4.0 Upper-Level Inspections:

4.1 Upper Radiator, Air Inlet, Oil Cooler, & Aftercooler Lines

  • Rubbing, cracked, damaged hoses

  • Loose or damaged hose clamps

  • Loose connections

4.2 Lower Radiator, Aftercooler & Condenser Lines

  • Rubbing, cracked, or damaged hoses

  • Loose or damaged hose clamps

4.3 Radiator, Oil Cooler, Condenser & Aftercooler

  • Coolant Leaks

  • Oil Leaks

  • Debris plugging core / cooling fins

  • Damaged cores / cooling fins

4.4 Radiator Cap

  • If the radiator is cool, check O-ring seals on the expansion tank cap for wear or damage.

4.5 Hydraulic Tank

  • Tank caps seals for damage

  • Breather for dirt and debris buildup

  • Hydraulic lines for leaks, loose or damaged connections

  • Sight glasses for damage or leaks

4.6 Batteries & Battery Cables

  • Battery posts and cables for corrosion

  • Battery tie down for proper function and tightness

  • For rubbing, damaged, or worn cables

4.7 Fuel System Lines, Fuel Pumps & Filter Bases

  • Damaged, rubbing, or worn fuel lines

  • Loose hose connections

  • Rubbing, damaged, or worn wiring harnesses and connectors

4.8 Cylinder Head & Valve Cover

Oil and dust buildup around the valve cover or rocker box sealing surfaces. This would indicate:

  • Damaged gasket or seal.

  • Loose connection at the joint

- Check for broken springs on rocker box bolts

4.9 Intake Manifold

  • Loose or damaged electrical harness and connector for inlet air heater

  • Rubbing, cracked, or damaged hoses

  • Loose or damaged hose clamps

  • Damaged boost sensor

4.10 Engine & Transmission Mounts

  • Loose or damaged bolts

  • Cracked or damaged washer

  • Cracked or damaged mount brackets

  • Wear, damage, cracking of upper and lower rubber support pads

- There should be no metal to metal contact.

4.11 Transmission Oil Cooler

  • Coolant leaks at bonnet connection to cooler core

  • Oil leaks at oil lines and connectors

  • Rubbing, cracked, or damaged hoses

  • Loose connections

  • Improperly secured hoses

4.12 Pulleys, Belts, Water Pump, Compressor Clutch & Alternator

Check belt drives for:

  • Worn, cracked, or broken belts.

  • Proper belt tension.

Check for oil leaks around air condition compressor clutch.

Check water pump for:

  • Coolant leaks around water pump mounting flange

  • Coolant leaks through the weep hole in the water pump housing

4.13 Precleaner & Air Cleaner

  • Dirt and debris in the air precleaner

  • Rubbing, damaged, or cracked tubes and hoses

  • Loose or damaged hose clamps on air inlet tube

- If the machine is shut down, look for dirt “tracks” around clamped connections as a visual indication of air leaks.

- If the machine is running, listen or feel for air leak indicators.

4.14 Turbocharger

  • Oil leakage around the turbocharger oil line

  • Loose or damaged hose clamps on air inlet tube and compressor housing

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

- Loose connection at the joint

- Loose or broken mounting bolts

4.15 Exhaust Manifold

  • Cracks or other damage in the manifold housing

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

- Loose connection at the cylinder head joint

- Loose or broken mounting bolts

4.16 Transmission, Parking Brake & Power Train Hydraulic Pumps

  • Leaks around hose connection points, tubing flanges, bolts

  • Rubbing, damaged, or worn hoses

  • Rubbing, damaged, or worn wiring harnesses or connectors

  • Loose or damaged hose clamps on main pump suction lines

4.17 Cab Interior

  • 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

5.0 Implement/Attachment Inspections:

5.1 Moldboard, Blade & Mounting Tube

  • Excessive play in moldboard mounting tube pivot joint

  • Loose, damaged, worn cutting edges or fasteners

  • Excessive wear or improper adjustment of slide wear strips

- Check at four equally spaced positions along length of moldboard. If large gap is identified, refer to OMM for procedure to measure wear & adjust/replace wear strips.

5.2 Blade Sideshift Cylinder

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 rod.

  • Improper lubrication, damage, or wear to linkage pins and pin retainers.

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

5.3 Blade Tip Cylinder

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 rod.

  • Improper lubrication, damage, or wear to linkage pins and pin retainers.

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

5.4 Circle Gears

  • Hydraulic oil leaks from duo cone seal behind pinion drive gear

  • Excessive wear on the ring gear and circle drive pinion teeth

  • Check for proper gear lubrication

  • Excessive wear & proper adjustment of circle guide shoes and wear strips

5.5 Circle Drive Motor

  • Rubbing, damaged, or worn hoses

  • Leakage at all hose connections

  • Check swivel for oil leakage:

- Between the bearing cap and the swivel housing

- Between the swivel housing and the bearing rotor

- Rubbing, damaged, or worn wiring harnesses and connectors

5.6 Circle Drive Swivel

  • Rubbing, damaged, or worn hoses

  • Leakage at all hose connections

  • Check swivel for oil leakage:

- Between the bearing cap and the swivel housing

- Between the swivel housing and the bearing rotor

- Rubbing, damaged, or worn wiring harnesses and connectors

5.7 Blade Lift Cylinders & Lock Bars

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 rod

  • Loose, damaged, or worn pin joints

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

  • Excessive play or wear in socket

- Refer to OMM for checking procedure

5.8 Centershift Cylinder

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 rod

  • Excessive play or wear in socket

- Refer to OMM for checking procedure

5.9 Centershift Lock

  • Leaks around solenoid valves

  • Leaks around connection points for hoses

  • Rubbing, damaged, or worn hoses

  • Rubbing, damaged, or worn wiring harnesses and connectors

  • Loose or missing linkage pin retainer bolts

  • Irregular shaped or worn pin bores in centershift lock bar

5.10 Blade Cushion Accumulator

  • Leaks around solenoid valves

  • Leaks around connection points for hoses

  • Rubbing, damaged, or worn hoses

  • Rubbing, damaged, or worn wiring harnesses and connectors

  • Damaged charging valves

5.11 Drawbar

Check Ball and Socket (Cap) for:

  • Proper Lubrication

  • Excessive end play in socket

- Refer to OMM for checking procedure

5.12 Ripper/Scarifier Lift Cylinder

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.

  • Improper lubrication, damage, or wear to trunnion bearing linkage pin and pin retainers.

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

5.13 Ripper/Scarifier

Mounts, frame, and carriage for:

  • Damage or cracks around welded joints

  • Improper Lubrication, damage or wear to pin bores

  • Loose, damaged, or missing retainer bolts

Shank Protector for excessive wear

  • If Ripper shank protector is worn to close to shank replace protector

Tips for excessive wear

  • Replace tips that are worn through too close to shank, on the bottom or cracked in the pocket

Damaged or missing retainer pins

  • Tap lightly on each pin. If pin moves easily, replace the retainer.

Performance Inspection

Brake Performance Checks

Table 8
Status(1)  Description  Specification  Actual  Comments 
  Service Brake - Check (Test from OMM)       
  Parking Brake - Check (Test from OMM)       
(1) N = Normal, M = Monitor, A = Action, Blank = Not Applicable

Secondary Steering Performance Checks

Secondary Steering Test (Test from T&A Secondary Steering)

Table 9
Status(1)  Description  Specification  Actual  Comments 
  Three Second Powerup Test       
  Secondary Steering Response Test       
  Steer Right (Stop to Stop)       
  Steer Left (Stop to Stop)       
(1) N = Normal, M = Monitor, A = Action, Blank = Not Applicable

Hydraulic Performance Checks

Cylinder Speed Tests

Table 10
Status(1)  Description  Specification  Actual  Comments 
  Blade Lift       
  Rod IN       
  Rod Out       
  Centershift       
  Rod IN       
  Rod Out       
  Wheel Lean       
  Rod IN       
  Rod Out       
  Blade Tip       
  Rod IN       
  Rod Out       
  Side Shift       
  Rod IN       
  Rod Out       
  Scarcifier (if equipped)       
  Rod IN       
  Rod Out       
  Ripper (if equipped)       
  Rod IN       
  Rod Out       
  Articulation       
  Rod IN       
  Rod Out       
(1) N = Normal, M = Monitor, A = Action, Blank = Not Applicable

Cylinder Drift Tests

Table 11
Status(1)  Description  Specification  Actual  Comments 
  Blade Lift (Left Cylinder)       
  Blade Lift (Right Cylinder)       
  Wheel Lean (Left Cylinder)       
  Wheel Lean (Right Cylinder)       
(1) N = Normal, M = Monitor, A = Action, Blank = Not Applicable

Caterpillar Information System:

Technical Analysis 1 (TA1) Visual Inspection for Excavator {0372, 1000, 7000, 753T, 7565} Technical Analysis 1 (TA1) Visual Inspection for Excavator {0372, 1000, 7000, 753T, 7565}
C175-16 Locomotive Engine Air Assist Pressure Is Low
New Contactor is Now Used as a Replacement for Prior Jacket Water Heater Relays for Certain C9, C15, and C18 Generator Set Engines {4460, 7426} New Contactor is Now Used as a Replacement for Prior Jacket Water Heater Relays for Certain C9, C15, and C18 Generator Set Engines {4460, 7426}
G3516 TA Engine Air/Fuel Ratio Control - Adjust
G3516 TA Engine Ignition Timing - Adjust
A New NRS Cooler Assembly Is Now Used for Certain C15 and C18 Industrial Engines {108G} A New NRS Cooler Assembly Is Now Used for Certain C15 and C18 Industrial Engines {108G}
G3516 TA Engine Manifold Air Pressure Sensor
G3516 TA Engine Engine Governing - Adjust
New Pressure Sensor Group Is Now Used On Certain 3512 and 3516 Engines With EMCP 4.x Controls {1408} New Pressure Sensor Group Is Now Used On Certain 3512 and 3516 Engines With EMCP 4.x Controls {1408}
C175-16 Locomotive Engine Air Assist Pressure Is High
C175-16 Locomotive Engine Aftercooler Coolant Temperature Is High
C18 Generator Set Engines Fuel Transfer Pump - Remove and Install
Technical Analysis 1 (TA1) Visual Inspection for Wheel Loaders {0372, 1000, 7000, 753S, 7565} Technical Analysis 1 (TA1) Visual Inspection for Wheel Loaders {0372, 1000, 7000, 753S, 7565}
G3508J, G3516J, and G3520J Engines Exhaust Manifold - Remove - Water Cooled
XQ570 Rental Generator Set Model View Illustrations
G3516 TA Engine Camshaft Timing
Installation and Initial Start-Up Procedure for G3600 A4 Engines {1000, 1900} Installation and Initial Start-Up Procedure for G3600 A4 Engines {1000, 1900}
323F SA Excavator and 323F MHPU Machine Systems Cylinder Drift - Check - Loaded Bucket
G3516 TA Engine Excessive Engine Oil Consumption - Inspect
C175-16 Locomotive Engine DEF Does Not Purge
C12.9 Marine Engines Auxiliary Water Pump (Bronze Impeller) - Inspect
C175-20 Locomotive Engine DEF Pressure Is Low
C12.9 Marine Engines Turbocharger - Inspect
Comprehensive List of Electrical Repair and Troubleshooting Information Is Now Available for All CAT Machines {0374, 0709, 1400, 1408, 7490, 7553, 7610} Comprehensive List of Electrical Repair and Troubleshooting Information Is Now Available for All CAT Machines {0374, 0709, 1400, 1408, 7490, 7553, 7610}
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