Flushing the flow and safety valves of the GAZ-3110 hydraulic booster pump
We clean the outside of the pump from dirt. Drain the oil from the system (see "Replacing the GAZ-3110 hydraulic booster oil")
Using the "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 vise, 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.
