Power Steering Pump -Revised
89Mitsubishi07SUBJECT:
NEW POWER STEERING PUMP ON MIRAGE TURBO
NO. TSB-89-37-001
DATE July, 1989
MODEL Mirage
PURPOSE
A new aluminum alloy-bodied power steering pump is used on the Mirage Turbo from March, 1989 forward. This bulletin describes the new pump and steps used in the repair procedure.
DETAILS OF CHANGE
The primary differences between the old and new pump are:
Main casting of the new pump is made of aluminum alloy. The pump body separates into 2 pieces instead of 3.
Due to these changes there are new pump mounting bolt torques and new repair parts and procedures.
The old and new pumps are interchangeable as complete units only.
Below and on the following pages are descriptions of the changes.
(1) Change in tightening torque of power steering oil pump mounting bolt, as indicated in the illustration.
(2) Change in components of power steering oil pump and its disassembly and reassembly procedures.
Disassembly steps
1. Pump cover
2. O-ring
3. Cam ring
4. Vane
5. Snap ring
6. Rotor
7. Pulley and shaft
8. Side plate
9. O-ring
10. O-ring
11. Suction connector
12. O-ring
13. Oil seal
14. Connector
15. O-ring
16. Flow control valve
17. Flow control spring
18. Terminal
19. O-ring
20. Spring
21. Plunger
22. Piston rod
23. Oil pump body
NOTE
(1) Reverse the disassembly procedure to reassemble.
(2) Service Points of Disassembly and Reassembly are the same as the conventional oil pump
(3) [N]: Non-reusable parts
(4) Tightening torque is the same as conventional oil pump.
(3) Change in oil pump seal kit components