Re: [HSS] More on the Oil Pump Spring Warning
----- Original Message -----
Sent: Tuesday, May 30, 2000 11:38 AM
Subject: [HSS] More on the Oil Pump Spring Warning
I am making some enquiries about having some new oil pump springs made. Our
used all they had. Will need to have at least 10 made to get a decent price.
Is anyone else over
there interested? I could send them to you for onward distribution. Will
keep you posted.
To check the oil pump plunger return spring remove suction (lower pipe) and
the outlet pipe to gauge. Undo the three 1/2" AF nuts. Carefully break the
seal on the oil pump and withdraw the pump from the housing. Be careful NOT
to turn the pump upside down, otherwise the ball bearing will dislodge from
its seat on the suction side of the pump. This bearing acts as a non-return
valve to stop oil draining back to the sump. Withdraw the plunger from the
pump and check the inside dia. of the coils. The spring is a tapered spring
and locates inside the oil pump casting, it has a tendency to touch the
casting and wear flats on the inner side of the spring with the possibility
of failure, causing the pump to fail. Replace spring if necessary.
To reassemble, reverse the above. Fill plunger cylinder with engine oil
A new gasket should be fitted at this time. Be careful that the ball bearing
is located on its seat, otherwise if it becomes caught in the plunger
cylinder serious damage can occur.
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