Power Steering Pump: Service and Repair
NOTE:- Always replace seals.
- Do not reuse hydraulic oil that has been drained.
- Directly below the component legend are the Fig. numbers. Please refer to these for information regarding removal and installation instructions.
1- Sealing ring
2- Pressure line
3- Banjo bolt
- Tighten to: 30 Nm (22 ft. lb.)
4- Suction hose
5- Hose clamp
6- Power steering pump
- Manufacturer: ZF, Saginaw
- Modification: pumps from Toyoda have also been installed and use the same removing and installing procedure
- Only ZF pumps are supplied as replacement parts
- Delivery pressure for all pumps is the same
- Fill with oil before installing
- Illustrations shows a Toyoda pump
7- Socket-head bolt
- Tighten to: 25 Nm (18 ft. lb.)
- Counter hold using water pump wrench VAG 1590 when loosening and tightening
8- V-belt
- Checking condition
9- Hex bolts
- M8 x 32: 25 Nm (18 ft. lb.)
- M8 x 28 for Toyoda pump -6-: 20 Nm (15 ft. lb.)
10- Bolt
- Tighten to: 45 Nm (33 ft. lb.)
- M10x98
11- Pivot bracket
- Must be installed free of tension
- Modification:
Pivot bracket changed with introduction of the Toyoda power steering pump refer to Fig. 1
12- Mounting bracket
- Must be installed free of tension
13- Bolt
- Tighten to: 25 Nm (18 ft. lb.)
- M8 x 50
14- Bolt
- Tighten to: 25 Nm (18 ft. lb.)
- M8 x 85
15- Adjustment bolt
- Tighten to: 25 Nm (18 ft. lb.)
16- Hex nut
- Tighten to: 25 Nm (18 ft. lb.)
- Not for Diesel engine
17- Bolt
- Tighten to: 25 Nm (18 ft. lb.)
- M8 x 42
18- 25 Nm (18 ft. lb.)
19- Stud
- Tighten to: 25 Nm (18 ft. lb.)
- Not for Diesel engine
20- Hex nut
- Tighten to: 25 Nm (18 ft. lb.)
21- Bracket
22- Coolant pump
Fig. 1 Revised pivot bracket
- The revised pivot bracket, unlike the previous bracket, is equipped with two cut-outs (arrows).
- Only the revised pivot bracket is supplied as a replacement part. It can also be used with ZF and Saginaw power steering pumps.
INSTALLATION
NOTE:
- Seating surfaces and threads must be free of paint on both sides of the vane pump.
- Numbers enclosed by dashes in the steps below relate only to the illustrations below.
1. Secure vane pump -1- with bolts -3- in pivot bracket -2-.
2. Install bolts -4- and tighten.
3. Install belt pulley -6- on vane pump -1- and tighten to:
-3- Hex bolt, 25 Nm (18 ft. lbs.)
-4- Hex bolt, 25 Nm (18 ft. lbs.)
-5- Socket-head bolt, 25 Nm (18 ft. lbs.)
4. Mount pivot bracket -2- and pump -1- with bolts -3- to mounting -4-.
5. Screw bolt -3- into pivot bracket -2- 10 mm until threaded bush contacts to mounting -4- (do not tighten).
6. Install hex bolt -5-, (do not tighten).
7. Fit mount -4- together with pump and pivot bracket to bracket -5- and engine block.
8. First screw bolts -1-, -2- and -3- in a couple of turns and then tighten in sequence as numbered to: 25 Nm (18 ft. lbs.)
9. Install adjustment bracket -7- to engine block using hex bolts -6-.
10. Install adjustment bolt -8- to pivot bracket.
11. Tighten hex bolts -6- to: 25 Nm (18 ft. lbs.).
12. Install V-belt and adjust tension.
NOTE: Stud -9- used only on vehicles with gasoline engine.