730, 735, and 730 Ejector Articulated Truck TA2 Technical Inspection {0372, 0374, 1000, 7000, 753T, 7565} Caterpillar

Articulated Truck

730 (S/N: 3F31-UP; 3T31-UP)

730 EJECTOR (S/N: 3F41-UP; 3T41-UP)

735 (S/N: 3F51-UP; 3T51-UP)

Introduction

Inspections are the most basic form of condition monitoring. Inspections 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 intervene effectively before problems occur.

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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 to prevent stress on battery connections (terminals).
	Battery Test	12.45 VDC or more		Refer to Special Instruction, SEHS7633, "Battery Test Procedure".
	Charging System Test	28 ± 1 VDC		Refer to Testing and Adjusting, UENR4302, "Charging System - Test" Refer to Special Instruction, REHS0354, "Charging System Troubleshooting"
	Electric Starting System Test	12 to 16 VDC at −23° C (−10° F) to −7° C (19° F)		Refer to Testing and Adjusting, SENR9888, "Electric Starting System - Test"
		14 to 18 VDC at −7° C (19° F) to 10° C (50° F)
		16 to 24 VDC 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)	- -
	Check Freezing Point of Engine Coolant	-
	Conditioner Test of Engine Coolant	-		.
	Check Belt Tension	For used belts - 645 ± 44 N (145 ± 10 lb) For new belts - 801 ± 44 N (180 ± 10 lb)

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

Fuel System Pressure - Test

Table 3

Status(1)	Description	Specification	Actual	Comments
	Fuel Pressure	503 kPa (73 psi) to 744 kPa (108 psi)

(1)	N = Normal, M = Monitor, A = Action

Lubrication System

Table 4

Status(1)	Description	Specification	Actual	Comments
	Engine Oil Pressure	179 kPa (26 psi) to 469 kPa (68 psi)

(1)	N = Normal, M = Monitor, A = Action

Basic Engine

Table 5

Status(1)	Description	Specification	Actual	Comments
	Engine Speed at Low Idle	700 ± 50 rpm
	Engine Speed at High Idle	2150 ± 50 rpm
	Torque Converter Stall Test Engine 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
	Torque Converter Stall Engine Speed (From Power Train) T&A	-
	Adjusted Boost Pressure	-
	Cylinder # 1 Exhaust Temperature(2)	-
	Cylinder # 2 Exhaust Temperature(2)	-
	Cylinder # 3 Exhaust Temperature(2)	-
	Cylinder # 4 Exhaust Temperature(2)	-
	Cylinder # 5 Exhaust Temperature(2)	-
	Cylinder # 6 Exhaust Temperature(2)	-

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

Performance Checks

Reference: Refer to Testing & Adjusting, M0082312, "730 & 735 Articulated Truck Systems" and Testing & Adjusting, M0082320, "730 Ejector Articulated Truck Systems" for more detail on the following test.

Hoist and Ejector Performance Checks

Hoist Cycle Time - Check for 730 & 735

Table 7

Status(1)	Description	Specification		Actual	Comments
		Low limit	High Limit
	Raise (High Idle)	8 Seconds	12 Seconds
	Lower (Low Idle)	7 Seconds	13 Seconds

(1)	N = Normal, M = Monitor, A = Action

Ejector Cycle Time - Check for 730 Ejector

Table 8

Status(1)	Description	Specification		Actual	Comments
		Low limit	High Limit
	Eject Time (High Idle)	14 Seconds	16 Seconds
	Retract Time (Low Idle)	16Seconds	18 Seconds

(1)	N = Normal, M = Monitor, A = Action

Machine Hydraulic Systems

Reference: Refer to Testing & Adjusting, M0082320, "730 Ejector Articulated Truck Systems" and Testing & Adjusting, M0082312, "730 and 735 Articulated Truck Systems" for more detail on the following test.

Pressure Reducing Valve (Hoist Pilot Pressure) - Test and Adjust

Table 9

Status(1)	Description	Specification	Actual	Comments
	Hoist Pilot Pressure (TPHP) at High Idle	4482 ± 1724 kPa (650 ± 250 psi)

(1)	N = Normal, M = Monitor, A = Action

Pressure Reducing Valve (Ejector System Pilot Pressure) - Test and Adjust

Table 10

Status(1)	Description	Specification	Actual	Comments
	Ejector Pilot Pressure (TPHP) at High Idle	4482 ± 1724 kPa (650 ± 250 psi)

(1)	N = Normal, M = Monitor, A = Action

Steering System

Piston Pump (Steering, Ejector) - Test and Adjust for 730 Ejector

Table 11

Status(1)	Description	Specification	Actual	Comments
	Steering System Pressure (TPST) at Low Idle	20702 ± 707 kPa (3003 ± 106 psi)
	Margin Pressure at High Idle	2200 ± 100 kPa (319 ± 15 psi)
	Standby Pressure (TP2) at Low Idle	4309 ± 689 kPa (625 ± 100 psi)
	High Pressure Cutoff (HPCO) (TP2) at High Idle	20700 ± 500 kPa (3002 ± 76 psi)
	Ejector System Pressure (TPH) at High Idle	20702 ± 707 kPa (3003 ± 106 psi)

(1)	N = Normal, M = Monitor, A = Action

Piston Pump (Steering, Hoist) - Test and Adjust for 730 and 735

Table 12

Status(1)	Description	Specification		Actual	Comments
		730	735
	Steering System Pressure (TPST) at Low Idle	20702 ± 707 kPa (3003 ± 106 psi)	22500 ± 500 kPa (3263 ± 76 psi)
	Margin Pressure at High Idle	2200 ± 100 kPa (319 ± 15 psi)	2200 ± 100 kPa (319 ± 15 psi)
	Standby Pressure (TP2) at Low Idle	4309 ± 689 kPa (625 ± 100 psi)	4309 ± 689 kPa (625 ± 100 psi)
	High Pressure Cutoff (HPCO) (TP2) at High Idle	20700 ± 500 kPa (3002 ± 76 psi)	22500 ± 500 kPa (3263 ± 76 psi)
	Hoist System Pressure (TPH) at High Idle	20702 ± 707 kPa (3003 ± 106 psi)	22500 ± 500 kPa (3263 ± 76 psi)

(1)	N = Normal, M = Monitor, A = Action

Electric Drive Pump (Secondary Steering) - Test

Table 13

Status(1)	Description	Specification	Actual	Comments
	Test Point Steering System Maximum Pressure (TPST) at High Idle	21994 ± 689 kPa (3190 ± 100 psi)

(1)	N = Normal, M = Monitor, A = Action

Fan Drive System

Radiator Fan - Fan Speed Test for 730, 735, and 730 Ejector

Table 14

Status(1)	Description	Specification	Actual	Comments
		730 Radiator fan Speed	735 Radiator fan Speed
	Fan Speed (High Idle)	1350 ± 50 rpm	2050 ± 150 rpm
	Fan Speed (Low Idle)	550 ± 50 rpm	800 ± 50 rpm

(1)	N = Normal, M = Monitor, A = Action

Braking System

Piston Pump (Brake, Ejector, Fan) - Test

Table 15

Status(1)	Description	Specification	Actual	Comments
	High Pressure Cutoff (HPCO) at High Idle	20700 ± 500 kPa (3002 ± 73 psi)
	Margin Pressure at High Idle	2200 ± 100 kPa (319 ± 15 psi)
	Standby Pressure (TPI) at Low Idle	5240 ± 586 kPa (760 ± 85 psi)

(1)	N = Normal, M = Monitor, A = Action

Piston Pump (Brake, Hoist, Fan) - Test and Adjust

Table 16

Status(1)	Description	Specification		Actual	Comments
		730	735
	High Pressure Cutoff (HPCO) at High Idle	20700 ± 500 kPa (3002 ± 73 psi)	20700 ± 500 kPa (3002 ± 73 psi)
	Margin Pressure at High Idle	2200 ± 100 kPa (319 ± 15 psi)	2200 ± 100 kPa (319 ± 15 psi)
	Standby Pressure (TPI) at Low Idle	5240 ± 586 kPa (760 ± 85 psi)	4740 ± 362 kPa (687 ± 53 psi)

(1)	N = Normal, M = Monitor, A = Action

Release Pressure for Parking Brake - Test for 730, 735, and 730 Ejector

Table 17

Status(1)	Description	Specification	Actual	Comments
	Parking Brake Outlet Pressure (PB) (High Limit)	20685 kPa (3000 psi)
	Parking Brake Outlet Pressure (PB) (Low Limit)	13410 kPa (1945 psi)

(1)	N = Normal, M = Monitor, A = Action

Brake System Charging Pressure - Check for 730, 735 and 730 Ejector

Table 18

Status(1)	Description	Specification	Actual	Comments
	Brake Charging System Cut Out Pressure (TPBR) at Low Idle	17995 ± 621 kPa (2610 ± 90 psi)
	Brake Charging System Cut In Pressure (TPBR) at Low Idle	13996 ± 586 kPa (2030 ± 85 psi)

(1)	N = Normal, M = Monitor, A = Action

Brake Accumulator (Parking) - Test and Charge for 730, 735 and 730 Ejector

Table 19

Status(1)	Description	Specification	Actual	Comments
	Precharge Pressure at 21° C (70° F)	9600 ± 172 kPa (1392 ± 25 psi)

(1)	N = Normal, M = Monitor, A = Action

Brake Accumulator (Service) - Test and Charge for 730, 735 and 730 Ejector

Table 20

Status(1)	Description	Specification	Actual	Comments
	Front Brake Accumulator Precharge Pressure at 21° C (70° F)	5516 ± 276 kPa (800 ± 40 psi)
	Rear Brake Accumulator Precharge Pressure at 21° C (70° F)	5516 ± 276 kPa (800 ± 40 psi)

(1)	N = Normal, M = Monitor, A = Action

Brake Line Pressure for Front Axle - Test for 730, 735 and 730 Ejector

Table 21

Status(1)	Description	Specification		Actual	Comments
		730	735
	Brake Line Pressure (High Limit) at Low Idle	5371 kPa (779 psi)	5957 kPa (864 psi)
	Brake Line Pressure (Low Limit) at Low Idle	4971 kPa (721 psi)	5557 kPa (806 psi)

(1)	N = Normal, M = Monitor, A = Action

Brake Line Pressure for Center and Rear Axle - Test for 730, 735 and 730 Ejector

Table 22

Status(1)	Description	Specification		Actual	Comments
		730	735
	Brake Line Pressure (High Limit) at Low Idle	5316 kPa (771 psi)	5902 kPa (856 psi)
	Brake Line Pressure (Low Limit) at Low Idle	4916 kPa (713 psi)	5502 kPa (798 psi)

(1)	N = Normal, M = Monitor, A = Action

Power Train System

Reference: Refer to Testing & Adjusting, M0082320, "730 & 735 Articulated Truck Systems" and Testing & Adjusting, M0082320, "730 Ejector Articulated Truck Systems" for more detail on the following test.

Relief Valve (Transmission Main) Pressure - Test

Table 23

Status(1)	Description	Specification	Actual	Comments
	Transmission Main relief valve at High Idle	2334 ± 196 kPa (339 ± 28 psi)

(1)	N = Normal, M = Monitor, A = Action

Transmission Oil Pump Pressure - Test

Table 24

Status(1)	Description	Specification	Actual	Comments
	Transmission Pump Pressure (Pre Oil Filter) (Low Idle)	1655 ± 140 kPa (240 ± 20 psi)
	Transmission Pump Pressure (Pre Oil Filter) (Elevated Idle)	1790 ± 140 kPa (260 ± 20 psi)

(1)	N = Normal, M = Monitor, A = Action

Transmission Lubrication Oil Pressure - Test

Table 25

Status(1)	Description	Specification	Actual	Comments
	Transmission Lubrication Pressure (LB) (Low Idle)	21 ± 14 kPa (3 ± 2 psi)
	Transmission Lubrication Pressure (LB) (High Idle)	160 ± 35 kPa (23 ± 5 psi)

(1)	N = Normal, M = Monitor, A = Action

Torque Converter Outlet Oil Pressure - Test

Table 26

Status(1)	Description	Specification	Actual	Comments
	Torque Converter Outlet Relief Valve Pressure (Low Idle)	35 ± 14 kPa (5 ± 2 psi)
	Torque Converter Outlet Relief Valve Pressure (High Idle)	207 ± 35 kPa (30 ± 5 psi)

(1)	N = Normal, M = Monitor, A = Action

Torque Converter Inlet Oil Pressure - Test

Table 27

Status(1)	Description	Specification	Actual	Comments
	Torque Converter Inlet Relief Valve Pressure (Low Idle)	125 ± 35 kPa (18 ± 5 psi)
	Torque Converter Inlet Relief Valve Pressure (High Idle)	485 ± 35 kPa (70 ± 5 psi)

(1)	N = Normal, M = Monitor, A = Action

Transmission Clutch Pressure - Test

Table 28

Status(1)	Description	Specification	Actual	Comments
	Clutch 1 Pressure (High Idle)	2137 ± 138 kPa (310 ± 20 psi)
	Clutch 2 Pressure (High Idle)
	Clutch 3 Pressure (High Idle)
	Clutch 4 Pressure (High Idle)
	Clutch 5 Pressure (High Idle)
	Torque Converter Lockup Clutch (LUC) (High Idle)	2137 ± 138 kPa (310 ± 20 psi)

(1)	N = Normal, M = Monitor, A = Action

Interaxle Differential - Test

Table 29

Status(1)	Description	Specification	Actual	Comments
	Supply Pressure the Interaxle Differential Lock (IAD) - P1	4150 ± 850 kPa (602 ± 123 psi)
	Interaxle Differential (IAD) Lock up clutch pressure - P2	3025 ± 325 kPa (439 ± 47 psi)

(1)	N = Normal, M = Monitor, A = Action

Cross Axle Differential Lock - Test

Table 30

Status(1)	Description	Specification	Actual	Comments
	Front Cross Axle Differential Lock Pressure at High Idle	4292 ± 707 kPa (623 ± 103 psi)
	Center Cross Axle Differential Lock Pressure at High Idle	4292 ± 707 kPa (623 ± 103 psi)
	Rear Cross Axle Differential Lock Pressure at High Idle	4292 ± 707 kPa (623 ± 103 psi)
	Cross Axle Differential Supply Pressure (TPDL) at High Idle	1862 ± 345 kPa (270 ± 50 psi)

(1)	N = Normal, M = Monitor, A = Action

S·O·S Samples

Reference: Refer to Operation and Maintenance Manual, M0082241, "Maintenance Interval Schedule" and Operation and Maintenance Manual, M0081351, "Maintenance Interval Schedule" for more detail on the following test.

Engine Oil Sample

Table 31

Status(1)	Description	Obtain	Comments
	Engine Oil Sample

(1)	N = Normal, M = Monitor, A = Action

Engine Coolant Sample (Level II)

Table 32

Status(1)	Description	Obtain	Comments
	Engine Coolant Sample

(1)	N = Normal, M = Monitor, A = Action

Hoist / Ejector System and Brake System Oil Sample

Table 33

Status(1)	Description	Obtain	Comments
	Hoist / Ejector System and Brake System Oil Sample

(1)	N = Normal, M = Monitor, A = Action

Steering System Oil Sample

Table 34

Status(1)	Description	Obtain	Comments
	Steering System Oil Sample

(1)	N = Normal, M = Monitor, A = Action

Differential & Final Drive Oil Samples

Table 35

Status(1)	Description	Obtain	Comments
	Front Axle Housing Oil Sample
	Center Axle Housing Oil Sample
	Rear Axle Housing Oil Sample
	Left Front Final Drive Oil Sample
	Right Front Final Drive Oil Sample
	Left Center Final Drive Oil Sample
	Right Center Final Drive Oil Sample
	Left Rear Final Drive Oil Sample
	Right Rear Final Drive Oil Sample

(1)	N = Normal, M = Monitor, A = Action

Torque Converter and Transmission Oil Sample

Table 36

Status(1)	Description	Obtain	Comments
	Torque Converter and Transmission Oil Sample

(1)	N = Normal, M = Monitor, A = Action

Transfer Gear Oil Sample

Table 37

Status(1)	Description	Obtain	Comments
	Transfer Gear Oil Sample

(1)	N = Normal, M = Monitor, A = Action