3408B and 3408C Industrial and Marine Engines Caterpillar

Engine Oil Pump

Usage:

3408B 1LG

Show/hide table




Illustration 1	g03320866

Show/hide table




Illustration 2	g03320884

Show/hide table

Table 1
Specification for 4N-8734 Engine Oil Pump Gp
Item	Qty	Part	Specification Description
-	-	-	When the pump drive is viewed from the drive end, the rotation is Counterclockwise.
-	-	-	Before operation, the pump must be lubricated with clean engine oil and the pump must turn freely by hand.
A	2	1W-7240 Gear	Length of the gear is 79.375 ± 0.025 mm (3.1250 ± 0.0010 inch). Depth of bore for the gear is 79.502 ± 0.020 mm (3.1300 ± 0.0008 inch).
1	1	2S-2760 Spring	Length under test force is 117.14 mm (4.612 inch). Test force is 499 ± 24 N (112 ± 5 lb). Free length after test is 152.91 mm (6.020 inch).
2	1	4N-5273 Pump Drive Shaft	Diameter of pump drive shaft is 22.217 ± 0.005 mm (0.8747 ± 0.0002 inch). Bore in the 7C-6498 Oil Pump Cover for bushing for pump drive shaft is 22.258 ± 0.008 mm (0.8763 ± 0.0003 inch).
3	1	4N-5271 Pump Drive Shaft	Diameter of pump drive shaft is 22.217 ± 0.005 mm (0.8747 ± 0.0002 inch). Bore in the 7C-6498 Oil Pump Cover for bushing for pump drive shaft is 22.258 ± 0.008 mm (0.8763 ± 0.0003 inch).
4	2	7N-2156 Bushing	Install the bushings, so that the bushings are even with the outside of the oil pump body. Angle from the centerline of the oil pump body to the bushing joint of the bushing is 30 ± 15 degrees.
C	1	-	Installation depth of bushing in the oil pump housing is 0.30 ± 0.25 mm (0.012 ± 0.010 inch).
D	2	8M-8489 Dowel	Extension of the dowel after installation is 6.4 ± 0.5 mm (0.25 ± 0.02 inch).

Caterpillar Information System:

G3408C and G3412C Engines Gear Group (Rear)

3512 Industrial Engine Fuel System Primary Filter/Water Separator - Drain

G3408C and G3412C Engines Engine Oil Pan

3612 and 3616 Fast Vessel Engines Fuel System - Prime

3612 and 3616 Fast Vessel Engines Fuel Analysis - Obtain

3612 and 3616 Fast Vessel Engines Exhaust Shields - Inspect

3612 and 3616 Fast Vessel Engines Governor Actuator Oil Level - Check

3612 and 3616 Fast Vessel Engines Engine Timing, Synchronization, and Valve Lash - Inspect/Adjust

3612 and 3616 Fast Vessel Engines Governor Actuator Oil - Replace

3612 and 3616 Fast Vessel Engines Governor Actuator Linkage - Check

3618 Engine Engine Air Cleaner Element - Replace

G3612 and G3616 Engines Starting Motor - Inspect

3612 and 3616 Fast Vessel Engines Oil Mist Detector - Check

3612 and 3616 Fast Vessel Engines Oil Mist Detector - Clean/Replace

G3300 Engines Water Pump - Inspect

3612 and 3616 Fast Vessel Engines Water Temperature Regulator - Replace

3612 and 3616 Fast Vessel Engines Model View Illustrations

3612 and 3616 Fast Vessel Engines Engine Speed Governing

Cold Weather Recommendations for All Caterpillar Machines Battery Information

Cold Weather Recommendations for All Caterpillar Machines Tire Inflation Information

3508 and 3516 EUI Engines and 5130 and 5230 Excavators Engine Speed/Timing Sensor

3612 and 3616 Fast Vessel Engines Walk-Around Inspection

3126E and 3126B Commercial and Truck Engines Walk-Around Inspection

G3304 and G3306 Engines Tachometer