2006/03/13 Caterpillar

Agricultural Tractor:

55 (S/N: 7DM1-UP)

Combine:

Lexion 450 (S/N: 5531-UP)

Lexion 460 (S/N: 6541-UP)

Lexion 460 R (S/N: 6651-UP)

Track-Type Tractor:

30-30 (S/N: 9XW1-UP)

DEUCE (S/N: 7RR1-UP)

Excavator:

322C (S/N: DAA1-UP; FED1-UP; M2H1-UP; HEK1-UP; BYL1-UP; C3R1-UP; EMR1-UP; LAR1-UP; MAR1-UP)

325C (S/N: CRB1-UP; JLC1-UP; S2C1-UP; BTD1-UP; JLD1-UP; BFE1-UP; DTF1-UP; AMH1-UP; CSJ1-UP; M2K1-UP; BMM1-UP; S3M1-UP; Y4P1-UP; BKW1-UP)

M325C (S/N: XJA1-UP; PAN1-UP)

Wheel Harvester:

550B (S/N: SAW1-UP)

560B (S/N: TRA1-UP)

570B (S/N: CKG1-UP)

580B (S/N: CLT1-UP)

Integrated Toolcarrier:

IT38GSeries II (S/N: JAN1-UP; CSX1-UP)

IT62GSeries II (S/N: AYA1-UP)

IT62G (S/N: AKP1-UP; 6PS1-UP)

Motor Grader:

120H (S/N: CAF1-UP; ALZ1-UP; 1241-UP)

135H (S/N: CBC1-UP; AMX1-UP)

Pipelayer:

561N (S/N: CPH1-UP)

Track-Type Loader:

953C (S/N: BBX1-UP)

963C (S/N: BBD1-UP)

Track-Type Tractor:

D5N (S/N: AKD1-UP; AGG1-UP; CFH1-UP; CKT1-UP)

D6N (S/N: CBF1-UP; CCG1-UP; ALH1-UP; CCK1-UP; CBL1-UP; AKM1-UP; ALR1-UP; CCS1-UP; ALY1-UP)

Wheel Loader:

938GSeries II (S/N: RTB1-UP; CRD1-UP; PHN1-UP; B9Y1-UP)

950FSeries II (S/N: 5SK1-UP)

950F (S/N: 7ZF1-UP)

950GSeries II (S/N: BAA1-UP; AYB1-UP; AYD1-UP; AYL1-UP; AXR1-UP; AYS1-UP; AXX1-UP)

950G (S/N: 2JS1-UP; 4BS1-UP; 6NS1-UP; 3JW1-UP; 5FW1-UP; 5MW1-UP; 8JW1-UP)

960F (S/N: 9ZJ1-UP)

962GSeries II (S/N: BAB1-UP; BAC1-UP; BAD1-UP; AYE1-UP; AYG1-UP; AXS1-UP; AXY1-UP)

962G (S/N: 3BS1-UP; 5AS1-UP; 5RS1-UP; 4PW1-UP; 6EW1-UP; 6HW1-UP; 7BW1-UP)

Use care when servicing HEUI pumps in Table 1. When the fuel line fittings and the fittings for the oil line are assembled to the pump, an excessive torque that is applied to the fittings can damage the threads of the pump ports. If the pump requires service, refer to Illustrations 1, 2, 3, 4 and 5.

When you service the pump drive gear, inspect the pump drive gear. If the pump drive gear is loose or the pump drive gear is damaged, the pump should be replaced and the engine oil filter should be changed.

Plug (5), plug (14) and plug (30) are the only plugs that are serviceable. The other plugs of the pump group are not serviceable. Check the other plugs of the pump group for leaks. Replace the pump if any of the other plugs on the pump group are leaking. Inspect the O-ring seal. If the O-ring seal is worn or if the O-ring seal is damaged, replace the O-ring seal.

162-9608 Unit Injector Hydraulic Pump Gp

Illustration 1	g01224288

(1) Unit Injector Hydraulic Pump

(2) Tighten the bolt that holds the gear to the following torque. ... 108.8 ± 13.6 N·m (80 ± 10 lb ft)

(3) The high pressure relief valve is set to the following pressure. ... 32.2 ± 1.7 MPa (4670 ± 247 psi)

Illustration 2	g01224291

(4) Tighten the fitting for the oil inlet port to the following torque. ... 71.5 ± 7.5 N·m (52.7 ± 5.5 lb ft)

(5) Tighten the plug to the following torque. ... 6.0 ± 0.7 N·m (53 ± 6 lb in)

(6) Tighten the plug to the following torque. ... 10.75 ± 1.25 N·m (95 ± 11 lb in)

(7) Tighten the valve to the following torque. ... 50 ± 5 N·m (37 ± 4 lb ft)

(8) Tighten the fitting for the oil outlet port to the following torque. ... 23 ± 2 N·m (17.0 ± 1.5 lb ft)

(9) Orient the open face of the nut away from the pump. Tighten the nut to the following torque. ... 5.5 ± 1.5 N·m (49 ± 13 lb in)

Illustration 3	g01224294

(10) Tighten the fitting for the fuel inlet port to the following torque. ... 17.5 ± 2 N·m (13 ± 1.5 lb ft)

(11) Tighten the fitting for the fuel outlet port to the following torque. ... 17.5 ± 2.0 N·m (12.9 ± 1.5 lb ft)

(12) Tighten the two bolts to the following torque. ... 24.5 ± 2.5 N·m (18.1 ± 1.9 lb ft)

134-0467 Unit Injector Hydraulic Pump Gp and 186-3410 Unit Injector Hydraulic Pump Gp

Illustration 4	g01254526

(13) Tighten the bolt to the following torque. ... 108.8 ± 13.6 N·m (80 ± 10 lb ft)

(14) Tighten the plug to the following torque. ... 6.0 ± 0.7 N·m (53 ± 6 lb in)

(15) Injection actuation pressure control valve (IAPCV)

(16) Tighten the bolt to the following torque. ... 24.5 ± 2.5 N·m (18 ± 2 lb ft)

(17) Tighten the valve to the following torque. ... 50 ± 5 N·m (37 ± 4 lb ft)

(18) Tighten the inlet of the oil pump to the following torque. ... 26 ± 3 N·m (19 ± 2 lb ft)

(19) Tighten the plug to following torque. ... 10.75 ± 1.25 N·m (95 ± 11 lb in)

(20) Tighten the outlet of the oil pump to the following torque. ... 23 ± 2 N·m (17 ± 1 lb ft)

(21) Tighten the outlet of the fuel pump to the following torque. ... 17.5 ± 2 N·m (13 ± 1.5 lb ft)

(22) Tighten the inlet of the fuel pump to the following torque. ... 17.5 ± 2 N·m (13 ± 1.5 lb ft)

107-1228 Unit Injector Hydraulic Pump Gp

Illustration 5	g01254546

(23) Tighten the bolt to the following torque. ... 108.8 ± 13.6 N·m (80 ± 10 lb ft)

(24) Tighten the bolt to the following torque. ... 24.5 ± 2.5 N·m (18 ± 2 lb ft)

(25) Tighten the inlet of the oil pump to the following torque. ... 26 ± 3 N·m (19 ± 2 lb ft)

(26) Tighten the inlet of the fuel pump to the following torque. ... 35 ± 3 N·m (26 ± 2 lb ft)

(27) Tighten the outlet of the fuel pump to the following torque. ... 35 ± 3 N·m (26 ± 2 lb ft)

(28) Tighten the valve to the following torque. ... 50 ± 5 N·m (37 ± 4 lb ft)

(29) Tighten the outlet of the oil pump to the following torque. ... 23 ± 2 N·m (17 ± 1 lb ft)

(30) Tighten the plug to the following torque. ... 6.0 ± 0.7 N·m (53 ± 6 lb in)