Volvo 21633966 Power Steering Pipe

OE number 21633966

APPLICATE:VOLVO - FM/FH 4

 

1 what does power steering pipe do?

Power-steering pipe  connect the steering pump to the rack-and-pinion assembly where pressurized fluid helps to push the rack left and right. Worn or damaged steering hoses are common sources of steering-fluid leaks.

 

2 where is the power steering pipe located?

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Power steering leaks are often caused by a leaking steering hose, pump or steering rack. In this case, the high pressure steering hose and pump is replaced. The pump is located at the front of the engine and is secured by two bolts to the block. Since it is driven off of the accessory drive belt, the belt needs to be removed first, and the low pressure line (from the reservoir) and higher pressure line (to the rack) disconnected. The high pressure power steering line goes across the top of the engine over to the firewall area, where it runs along the subframe, underneath the rear engine mount, and into the pinion gear on the rack. The air box, fuse box and strut tower must be disconnected in order to access the power steering high pressure hose at the rack with a 19mm wrench. Once the hose is loosened, the old one must be fished out underneath the rear engine mount, and replaced with a new one. Finally, once all leaks have been replaced, a full power steering fluid flush is recommended. This is done by filling the reservoir and starting the vehicle and turning the wheels from lock to lock a few times, and then refilling the reservoir again, to ensure no air is in the system. Procedure on bleeding and flushing can be found here:

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