Oil Pump: Service and Repair

OIL PUMP

REMOVAL
1. Remove the oil pan.
2. Remove the oil pump bolts (Fig. 55).
3. Press the chain tensioner off of the oil pump chain, and remove pump from chain.
4. Remove the oil pump, pickup tube and O-ring (Fig. 55).

REMOVAL - OIL PUMP CHAIN
1. Disconnect negative battery cable.
2. Remove oil pan.
3. Remove oil pump.

NOTE: Make sure the pin of the thrust spindle is backed out into the thrust spindle before seating the thrust spindle to the oil pump chain.





4. Using special tool #93121 riveting tool, thrust spindle #93124 and thrust pin pin #93123, position and fit chain separating tool and thrust spindle onto a link of the oil pump chain (Fig. 58).
5. Screw the thrust pin in and separate the oil pump chain link.
6. Remove pressed out oil pump chain pin from chain separation tool.

CAUTION: IT IS ESSENTIAL that the installation procedure for the oil pump chain is followed exactly. Failure to do so will result in severe engine damage.

INSTALLATION

NOTE: If the oil pump is dry, fill it with clean engine oil before installation. Clean the oil pickup tube and strainer.

1. Clean all sealing surfaces.
2. Position the oil pump onto the drive chain and reset tensioner.
3. Install oil pump retaining bolts and tighten to 18 Nm (160 inch lbs.).
4. Install the oil pan.
5. Refill the crankcase to the appropriate level with the proper engine oil.

WARNING: USE EXTREME CAUTION WHEN THE ENGINE IS OPERATING. DO NOT PUT YOUR HANDS NEAR THE PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHES.

6. Start the vehicle and inspect for leaks.

INSTALLATION - OIL PUMP CHAIN

CAUTION: IT IS ESSENTIAL that the installation procedure is followed exactly. Failure to do so will result in severe engine damage.





1. Connect old oil pump chain and new chain with temporary link, outer plate and locking element (Fig. 59).
2. Slowly rotate crankshaft in a clockwise direction until it is possible to connect the ends of the new and old oil pump chains.





3. Remove assembly locking element, outer plate and assembly link (Fig. 60).

CAUTION: Insert new riveted link from the rear.





4. Connect ends of new oil pump chain with new riveted link (Fig. 61).

NOTE: When assembling riveting tool, one piece is secured by a screw and the other can move loosely on the thrust spindle.

NOTE: The outer plate will be held in place by a magnet.

5. Place new outer plate into tool insert.

NOTE: Ensure that the riveted link and riveting tool are aligned.

6. Position riveting tool over new link and press in new rivet as far as the tool stop.
7. Remove riveting tool to change inserts.
8. Install insert on riveting tool and secure with screw.





9. Install insert on riveting tool (Fig. 62).

NOTE: The outer plate is held in place magnetically by riveting tool.

10. Insert new outer plate into the moving assembly insert.
11. Position riveting tool so that spacer webs of the guide are side by side.
12. Ensure that riveted link and outer plate are aligned.

NOTE: When turning spindle of riveting tool, be sure that pins of riveted link are inserted into holes of outer plate.

13. Screw in spindle of riveting tool until firm resistance is felt.
14. Remove riveting tool.
15. Turn over tool moving assembly insert to the riveting profile.

NOTE: Rivet pins of the riveted link individually.





16. Position riveting tool exactly over middle of pin (Fig. 63).
17. Tighten riveting tool spindle until it stops.





18. Remove riveting tool, inspect riveting, re-rivet if necessary (Fig. 64).
19. Repeat procedure for both rivets.
20. Install oil pump.
21. Install oil pan.
22. Refill engine with proper oil to the correct level.
23. Connect negative battery cable.
24. Start engine and inspect for leaks.