Fill power steering pump and bleed · ar4630p0010rd · Mercedes-Benz WIS

AR46.30-P-0010RD

Fill power steering pump and bleed

16.06.2015

Model	172 with engine 274
Model	172 with engine 276, 651
	as of model year 2016

Shown on ENGINE 274

1	Power steering (expansion reservoir)
1d	Expansion reservoir cap (power steering)

P46.25-2208-05

 	Remove/install
 Danger !	Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.	Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
1	Hoist vehicle with lifting platform until wheels are free		AR00.60-P-1000V
2	Remove expansion reservoir cap (power steering) (1d) from expansion reservoir (power steering) (1)
	Filling
3	Fill expansion reservoir (power steering) (1) with MB steering gear oil	 Do not start the engine. If the engine is started, there is a risk of air entering the hydraulic steering, which is then extremely difficult to remove.
		 Fill the expansion reservoir (power steering) (1) up to approx. 10 mm below the upper edge of the reservoir with MB steering gear oil.
		 Refill with MB-steering gear oil continuously until the oil level remains constant.
		 Power steering	*BF46.20-P-1001-01A
	Bleeding
4	Turn steering wheel from steering stop to steering stop	 Do not start the engine! If the engine is started, there is a risk of air entering the hydraulic steering, which is then extremely difficult to remove.
		 Repeat turning the steering from stop to stop several times (up to 30 times). During this process, MB steering gear oil must be poured into the expansion reservoir (power steering) (1) by a second person.
5	Start engine without moving the steering	 Allow engine to run for Approx.. 1 min. at idle speed.
		 During this process, a second person must observe the oil level in the expansion reservoir (power steering) (1) and add MB steering gear oil as required.
6	Turn steering wheel from steering stop to steering stop	 With the engine running, turn the steering wheel slowly several times from steering stop to steering stop, occasionally adding MB steering gear oil to the expansion reservoir (power steering) (1).
		 Repeat the procedure until the oil level in the expansion reservoir (power steering) (1) remains constant and bubbles are no longer visible.
	Check
7	Check oil level in expansion reservoir (power steering) (1) and fill up to maximum fill level
			AP46.00-P-4611SX
		 The oil level in the expansion reservoir (power steering) (1) must always be filled up to the maximum level.
8	Check steering with engine running for leaktightness and proper operation	 In the event of leakage, find and eliminate cause.
9	Install in the reverse order

 Steering gear

Number	Designation			Model 172
BF46.20-P-1001-01A	Power steering	Filling capacity	Liter	1,0
		Sheet		BB00.40-P-0345-00A

Referenced documents

ap4600p4611sx Check and correct power steering fluid level
ar0060p1000v Lift/jack up vehicle
as0000z000501a Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.