Power steering pump being removed for replacement or repair
Occurring defects in the steering hydraulic pump:
- wear of the pump bearings (constant noise from the pump);
- the flow and safety valve do not work due to contamination (there is increased pressure in the system);
- fluid leak through technological holes in the pump housing (plugs squeezed out);
- fluid leak from under the pump covers.
If the steering wheel turns hard in both directions, then the pump is faulty.
Pumps can be supplied as spare parts with or without hose fittings.
Removing the pump
Raise and place the front of the car on supports.
Remove the engine mudguard
We drain the fluid from the hydraulic booster system (see the article - Changing the oil in the GAZ-2705 hydraulic booster
Remove the auxiliary drive belt (see article - Replacing the accessory drive belt
Loosen the clamp of the upper hose of the pump
Disconnecting the top hose
Unscrew the nut of the lower hose fitting, holding the nut with the second wrench
Pull the hose away from the pump.
Remove the two pump mounting bolts
Removing the pump
If you need to remove the bracket, then unscrew the three bolts of its fastening
Remove the bracket
Install the pump and all removed parts in reverse order
After installation, we fill the system with hydraulic fluid and pump the system.
Flushing the flow and safety valves of the hydraulic booster pump
We clean the outside of the pump from dirt.
Using a 24 key, unscrew the plug located above the pump outlet. (Shown on removed pump for clarity.)
Remove the flow valve spring.
Remove the spool
To prevent oil from leaking out and dirt from getting inside the pump, put the plug in place
With a thin screwdriver, carefully remove the rubber cuff from the spool.
Having wrapped the spool body in thin cardboard or a piece of emery skin, and carefully holding it in a vice, unscrew the spool seat with a 10 key.
When releasing the spool body from the vice, hold it vertically so as not to lose small parts of the valve.
Remove the ball, guide rod and spring from the spool body
We wash all parts in gasoline and blow with compressed air (from a pump or compressor).
We assemble the spool and install it in place in reverse order.