3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Caterpillar


Oil Pump

Usage:

Remove Oil Pump

START BY:

a. remove oil pan

1. Remove two bolts (4) that hold tube assembly (1) to the engine block.

2. Remove one bolt (not shown) that holds pipe (3) to oil pump (2). Remove the pipe and tube assembly as a unit.

3. Remove three bolts (5). Remove oil pump (2).

Install Oil Pump

1. Check the O-ring seals for damage. If damaged, use new parts for replacement.

2. Put oil pump (1) in position. Install the three bolts that hold the oil pump to the engine.

3. Put clean engine oil on all O-ring seals, and install pipe (2) and tube assembly (3) in the oil pump as a unit. Install two bolts that fasten the pipe assembly to the engine block.

END BY:

a. install oil pan

Disassemble Oil Pump

START BY:

a. remove oil pump

1. Remove the bolt and washer that hold the gear on the shaft.

2. Use tooling (A) to remove drive gear (1) from the shaft. Remove the key from shaft.

3. Remove retainer (3) for the bypass valve.

4. Remove the spring and bypass valve.

5. Remove cover (2) from the pump body.

6. Use tooling (B) to remove the bearings from the cover.

7. Remove gears (5) from pump body (4).

8. Use tooling (B) to remove the bearings from the pump body.

Assemble Oil Pump

1. Use tooling (A) to install the bearings in the main pump body until they are even with the outside surface of the pump body. Install the bearings so the junctions in the bearings are 30° ± 15° from the center of the bearing bores and toward the oil pump outlet passage (2) as shown.

2. Install idler gear (1) and drive gear (3) in the oil pump body. Put clean engine oil on the bearings and gears.

3. Use tooling (A) to install the bearings in cover (4) until they are even with the outside surface of the cover. Install the bearings so the junctions in the bearings are 30° ± 15° from the center of the bearing bores and toward the oil pump outlet passage as shown.

4. Install bypass valve (5), spring (6), spacer and the retainer in the pump body.

5. Install the key on the shaft.

6. Install gear (7) on the shaft. Install the washer and bolt that holds the gear on the shaft. Tighten the bolt to a torque of 55 ± 7 N·m (41 ± 5 lb.ft.).

7. Make sure the pump turns freely by hand after it is assembled.

END BY:

a. install oil pump

Caterpillar Information System:

3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Oil Pan
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Oil Filter And Cooler Bypass Valves
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Engine Oil Cooler
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Transmission Oil Cooler
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Electric Starting Motor
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Air Conditioning Compressor
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Alternator
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Crankcase Guards
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Rear Hood
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Front Hood
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Body Support (FT1437)
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Body Retaining Pins
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Engine Oil Filter Base
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Aftercooler
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Coolant Conditioner Element And Base
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Radiator Guard
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Radiator (Earlier)
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Radiator (Later-Folded Core)
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Cooling System Pressure Relief Valve
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Turbocharger (4MF)
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Air Compressor
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Fuel Priming Pump
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Fuel Filter Base
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Fuel Ratio Control
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