910K and 914K Compact Wheel Loaders TA2 Technical Inspection{0372, 1000, 7000, 753T, 7565} Caterpillar

Compact Wheel Loader:

910K (S/N: AY41-UP)

914K (S/N: CD21-UP)

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 TA2 values, consult SIS for the latest specification values.

Creating an Electronic Copy

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3. Open the document with Microsoft Word.

Electrical System

Table 1

Status (1)	Description	Specification	Actual	Comments
	Inspect Battery Cables	Cables between the battery, the starter, and the engine ground must be the correct size. Wires and cables must be free of corrosion. Wires and cables must have cable support clamps in order to prevent stress on battery connections (terminals).
	Battery Test	12.4 VDC or more		Refer to Special Instruction, SEHS7633, "Battery Test Procedure".
	Charging System Test	18 VDC to 32 VDC		Refer to Special Instruction, REHS0354, "Charging System Troubleshooting".
	Electric Starting System Test	12 to 16 V at −23° C (−10° F) to −7° C (19° F)		Refer to Testing and Adjusting, KENR9884, "Electrical Starting System - Test".
		14 to 18 V at −7° C (19° F) to 10° C (50° F)
		16 to 24 V at 10° C (50° F) to 27° C (80° F)

( 1 )

N = Normal, M = Monitor, A = Action

Engine

Cooling System

Table 2

Status (1)	Description	Specification	Actual	Comments
	Radiator Pressure Relief (Radiator Cap) (2)	-
	Freezing Point of Engine Coolant	-
	Conditioner Test of Engine Coolant	-
	Belt Tension	-		Refer to Operation and Maintenance Manual.
	Difference between the Upper and Lower Radiator Tank Temperatures	-

( 1 )	N = Normal, M = Monitor, A = Action
( 2 )	Test for the pressure that is listed on the cap.

Fuel System

Table 3

Status (1)	Description	Specification	Actual	Comments
	Fuel Pressure	83 kPa ( 12 psi)

( 1 )

N = Normal, M = Monitor, A = Action

Lubrication System

Table 4

Status (1)	Description	Specification	Actual	Comments
	Engine Oil Pressure at Low Idle	48 kPa ( 7 psi)
	Engine Oil Pressure at High Idle	145 kPa ( 21 psi)

( 1 )

N = Normal, M = Monitor, A = Action

Basic Engine

Table 5

Status (1)	Description	Specification	Actual	Comments
	Engine Speed at Low Idle	1075 to 1125 rpm
	Engine Speed at High Idle	2450 to 2575 rpm
	Cylinder Cutout Test	-		Cat® Electronic Technician (Cat ET) Service Tool

( 1 )

N = Normal, M = Monitor, A = Action

Air Inlet and Exhaust System

Table 6

Status (1)	Description	Specification	Actual	Comments
	Cylinder # 1 Exhaust Temperature (2)	-
	Cylinder # 2 Exhaust Temperature (2)	--
	Cylinder # 3 Exhaust Temperature (2)	-
	Cylinder # 4 Exhaust Temperature (2)	-

( 1 )	N = Normal, M = Monitor, A = Action
( 2 )	Compare the exhaust temperature variance at each exhaust port.

Performance Checks

ReferenceRefer to Testing & Adjusting, UENR4237, "Machine Systems" for more detail on the following test.

Operational Checks

Table 7

Status (1)	Description	Specification	Actual	Comments
	Cycle Times	Lift (910K) 5.9 +/- 0.7 seconds Lift (914K) 5.5 +/- 0.7 seconds Dump (910K) 2.1 +/- 0.3 seconds Dump (914K) 1.8 +/- 0.73 seconds
	Hydraulic Fan Speed (High Idle)	1900+/- 50 rpm
	Line Relief Valve (Auxiliary)	22000 ± 1000 kPa (3190 ± 145 psi)
	Main Relief Valve	910K 23500 ± 1000 kPa (3408 ± 145 psi) 914K 28000 ± 1000 kPa (4061 ± 145 psi)
	Drift Test	Lift 5.0 minutes 10 mm (0.39 inch) Dump 5.0 minutes 10 mm (0.39 inch)

( 1 )

N = Normal, M = Monitor, A = Action

Hydraulic System

ReferenceRefer to Testing & Adjusting, UENR4237, "Machne Systems" for more detail on the following test.

Piston Pump (Implement) - Test & Adjust

Table 8

Status (1)	Description	Specification	Actual	Comments
	Low Pressure Standby)	1500 kPa (218 psi)
	High Pressure Cutoff	28700 kPa (4163 psi)
	Margin Pressure	1700 ± 100 kPa (247 ± 15 psi)

( 1 )

N = Normal, M = Monitor, A = Action

Pilot System Pressure

Table 9

Status (1)	Description	Specification	Actual	Comments
	Pilot Pump Pressure	2902 ± 200 kPa (421 ± 29 psi)

( 1 )

N = Normal, M = Monitor, A = Action

Power Train System

ReferenceRefer to Testing & Adjusting, UENR4239, "Power Train System" for more detail on the following test.

Hydrostatic System- Test (Test A Baseline for the Hydrostatic System)

Table 10

Status (1)	Description	Specification	Actual	Comments
	Charge pressure Low Idle	3000 ± 500 kPa (435 ± 75 psi)
	Charge pressure High Idle	3750 ± 750 kPa (545 ± 110 psi)
	Pressure for the pump case Low Idle	70 ± 50 kPa (10 ± 7 psi)
	Pressure for the pump case High Idle	170 ± 70 kPa (25 ± 10 psi)

( 1 )

N = Normal, M = Monitor, A = Action

Hydrostatic System- Test (Test B Start to Move Test)

Table 11

Status (1)	Description	Specification	Actual	Comments
	Hystat High Pressure Loop 1275 ± 50 rpm	7500 ± 2000 kPa (1100 ± 300 psi)

( 1 )

N = Normal, M = Monitor, A = Action

Hydrostatic System- Test (Test C Hydrostatic Stall Test in FORWARD 910K)

Table 12

Status (1)	Description	Specification	Actual	Comments
	Hystat High Pressure Loop 2500 ± 50 rpm	24200 ± 1000 kPa (35100 ± 145 psi)

( 1 )

N = Normal, M = Monitor, A = Action

Hydrostatic System- Test (Test C Hydrostatic Stall Test in FORWARD 914K)

Table 13

Status (1)	Description	Specification	Actual	Comments
	Hystat High Pressure Loop 2500 ± 50 rpm	28000 ± 1000 kPa (4060 ± 145 psi)

( 1 )

N = Normal, M = Monitor, A = Action

Hydrostatic System- Test (Test D Travel at Full Speed)

Table 14

Status (1)	Description	Specification	Actual	Comments
	2500 ± 50 rpm	Drive motor speed 4700 ± 75 rpm

( 1 )

N = Normal, M = Monitor, A = Action

Hydrostatic System- Test (Test F Double Stall Implement Pressure)

Table 15

Status (1)	Description	Specification	Actual	Comments
	910Kl Implement Pressure	24200 ± 800 kPa (3510 ± 115 psi)
	914K Implement Pressure	28000 ± 1000 kPa (4060 ± 145 psi)

( 1 )

N = Normal, M = Monitor, A = Action

Hydrostatic System- Test (Test F Double Stall Hystat Loop Pressure)

Table 16

Status (1)	Description	Specification	Actual	Comments
	910K Standard Rimpull Hystat Pressure	47000 ± 1500 kPa (6820 ± 220 psi)
	910K High Rimpull Hystat Pressure	45000 ± 1500 kPa (6530 ± 220 psi)
	914K Hystat Pressure	42000 ± 1500 kPa (6090 ± 220 psi)

( 1 )

N = Normal, M = Monitor, A = Action

Drive Pump Swash Plate Signal Oil Pressure - Test

Table 17

Status (1)	Description	Specification	Actual	Comments
	Low Idle Pressure Differential	250 kPa (36 psi)
	1500 rpm Pressure Differential	250 kPa (36 psi)
	200 rpm Pressure Differential	250 kPa (36 psi)
	High Idle Pressure Differential	250 kPa (36 psi)

( 1 )

N = Normal, M = Monitor, A = Action

Steering System

ReferenceRefer to Testing & Adjusting, UENR4237, "Machine Systems" for more detail on the following test.

Piston Pump - Test and Adjust

Table 18

Status (1)	Description	Specification	Actual	Comments
	Low Pressure (Standby)	20000 ± 500 kPa (2900 ± 72 psi)
	High Pressure Stall	23000 ± 500 kPa (3335 ± 72 psi)

( 1 )

N = Normal, M = Monitor, A = Action

Braking System

ReferenceRefer to Testing & Adjusting, UENR4237, "Machine Systems" for more detail on the following test.

Brake Pressure - Test and Adjust

Table 19

Status (1)	Description	Specification	Actual	Comments
	Service Brake	5000 to 6000 kpa (725 to 870 psi)
	Parking Brake Off	Enter Value

( 1 )

N = Normal, M = Monitor, A = Action

S.O.S

ReferenceRefer to Operation and Maintenance Manual, SEBU9102, "Maintenance Interval Schedule" for more detail on performing S.0.S samples.

Table 20

Status (1)	Description	Obtain		Comments
	Engine Oil Sample
	Engine Coolant Sample (Level II)
	Hydraulic Oil Sample
	Transmission Oil Sample
	Front Right Final Drive Oil Sample
	Front Left Final Drive Oil Sample
	Rear Right Final Drive Oil Sample
	Rear Left Final Drive Oil Sample
	Front Axle/Diff Oil Sample
	Center Axle/Diff Oil Sample
	Rear Axle/Diff Oil Sample
	Transfer Case Oil Sample
	Brake Fluid Oil Sample
	Power Steering Oil Sample

( 1 )

N = Normal, M = Monitor, A = Action