S 600 Sedan (140.057) V12-6.0L (120.982) (1996)
Power Steering Pump: Testing and Inspection
Checking Oil Pressure In Power Steering Pump
1
Extract oil from supply reservoir of power steering pump
2
Clamp off feed line from reservoir
3
Unscrew high-pressure expansion hose (30i) from power steering pump
CAUTION: On vehicles with tandem pump, the tester must not be connected to the radial piston pump
4
Connect tester (039) between power steering pump and high-pressure expansion hose (30i)
5
Remove clamp from feed line from reservoir
6
Top up reservoir
DANGER:
-
Risk of accident from vehicle starting off by itself when engine is running Risk of injury with bruises and burns if you hold your hand
in the engine when it is being started or while it is running
-
Secure vehicle to prevent it moving off by itself
-
Wear closed and close-fitting work clothes Do not touch hot or rotating parts
7
Engine ON
8
Increase engine speed to approx 1000 rpm
9
Close throttle cock (70b) and check maximum service pressure
CAUTION: Perform the test quickly to prevent the oil temperature from rising too high
10
Engine OFF
11
Extract oil from supply reservoir of power steering pump
12
Clamp off feed line from reservoir
13
Disconnect tester (039)
14
Screw high-pressure expansion hose (30i) onto power steering pump
15
Remove clamp from feed line from reservoir
16
Fill and bleed power steering pump
17
Check power steering pump for leaks