EPC Parts Catalogs

3508B Engine for Caterpillar Built Machines Fuel Injector Mechanism Caterpillar


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Fuel Injector Mechanism
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3508B Engine for Caterpillar Built Machines [RENR1308]
3508B Engine for Caterpillar Built Machines Cylinder Head
BASIC ENGINE
VALVE MECHANISM GP
3508B Engine for Caterpillar Built Machines Fuel Injector Mechanism
3500B Engines for Caterpillar Built Power Modules Valve Mechanism
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Table 1
Specification for the 281-6160 Valve Mechanism Gp and 286-5723 Valve Mechanism Gp 
Item  Qty  Part  Specification Description 
B  1  230-2620 Bushing  Bore in the bushing for the rocker arm shaft after installation is 45.077 ± 0.015 mm (1.7747 ± 0.0006 inch). 
1  1  9S-1354 Nut  Torque to 120 ± 15 N·m (89 ± 11 lb ft). 
C  1  234-2273 Rocker Arm Shaft  Diameter of the rocker arm shaft is 45.000 ± 0.013 mm (1.7716 ± 0.0005 inch) 
2  1  6J-2245 O-Ring Seal  Lubricate the bore of the O-ring seal lightly with clean engine oil. 
3  1  7E-6508 Cap As  Torque the retainer nuts of the cap assembly to 2.500 ± 0.025 N·m (22.127 ± 0.221 lb in).
Start tightening the retainer nuts of the cap assembly by hand so that the terminal studs are not cross threaded. 
4  1  100-3878 Injector Spring  Length under test force is 85.00 mm (3.346 inch).
Test force is 300 ± 25 N (67 ± 6 lb).
Free length after test is 87.65 mm (3.451 inch). 
D  1  282-7944 Injector Lifter As  Diameter of the unit injector lifter assembly is 34.950 ± 0.010 mm (1.3760 ± 0.0004 inch).
Bore in the head for the unit injector lifter assembly is 35.000 ± 0.025 mm (1.3779 ± 0.0010 inch). 

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