Power Steering / Oil Circulation For 8-Cylinder Engine

Power steering / oil circulation for 8-cylinder engine
General Information
Power steering pump is not designed to be serviced. If a customer has reported a problem, determine cause via the pressure test and leak test. If there is a problem, replace the power steering pump.
Oil circulation in Right Hand Drive (RHD) vehicles is identical to Left Hand Drive (LHD) vehicles except that the hydraulic lines are routed from left to right at the steering gear.

Note:
^ If power steering fluid is low in the reservoir, check the steering system for leaks.
^ In case of leaks near line connections, check fines1line connections for proper seal, if necessary tighten and wipe dry.
^ Replacement pumps from the distribution center do not contain any fluid. Before installing, fill pump with G 002 000 hydraulic oil and turn pump by hand. Otherwise, the pump may be noisy when operating or may even get damaged.
^ Oil type: G 002 000 hydraulic fluid





1. Power steering gear
2. Return hose
^ Steering gear- power steering fluid cooler
3. Pressure line
^ Tighten union nut to 40 Nm (at item 4 while counterholding hex bolt.
^ Note installation position:
^ At steering gear refer to Fig. 2
4. Expansion hose
^ Power steering pump - steering gear
^ Note installation position:
^ At power steering pump refer to Fig. 1
5. Cover with dipstick
^ Check fluid level
6. Hex bolt, 9 Nm
7. Power steering fluid reservoir
^ Capacity 0.85L
8. Rubber bushing
9. Return hose
Located between power steering fluid reservoir and cooling line
^ Installation position: Restrictor (arrow) faces power steering fluid reservoir
10. Banjo bolt, 47 Nm
^ M16 x 1.5
11. Seals
^ Always replace
12. Intake hose
^ Power steering pump - power steering fluid reservoir
^ Note installation position:
- At power steering pump refer to Fig. 1
- At power steering fluid reservoir refer to Fig. 3
13. Banjo fitting, 47 Nm
^ M18 x 1.5
14. Seals
^ Always replace
15. Clamp
^ Tighten using VAG 1275
16. Power steering fluid cooler
17. Phillips-head screw
^ 2.5 Nm
18. Power steering pump
^ Before installing, fill with power steering fluid
^ Check delivery pressure
19. Spring nut
^ 1.3 Nm
20. Sheet-metal screw and washer assembly
^ 2 Nm
21. Heat shield Different version for vehicles with parking heater
22. Heat shield





Fig. 1 Installation position, Intake and expansion hoses to power steering pump
Expansion hose
Angle -a-: approximately 57°
Intake line
Angle -b- : approximately 90°





Fig. 2 Installation position, return line and pressure line at steering gear, for Left Hand Drive (LHD) vehicles
Pressure line
Angle -a-: approximately 45°
Return hose
Angle -b-: approximately 116°





Fig. 3 Installation position, Intake hose at power steering fluid reservoir, valid for all engines
The marking on intake hose - 1 - must align with the seam on the power steering fluid reservoir.