201
Problems
with the oil pump
Peter Berry (Teal Blue 0201) from Kent contributes this useful note
following problems he came across following a leaking oil pump base
gasket. (May 91)
The oil pump base
had been leaking for some time and was getting steadily worse. The
steering rack and front offside suspension had oil droplets hanging
from their lowest points. The oil pump base was removed to allow
a new gasket to be fitted. Whilst it was off, the opportunity was
taken to replace the oil pressure release valve and also have the
mating faces machined level again since there was about 0.003 inches
wear pattern from the gears.
Upon reassembly,
the advice in the workshop manual was followed and the pump was
packed full with petroleum jelly (Vaseline), the compressible washers
were renewed and the pipes were filled as far as possible with new
engine oil. The spark plugs were removed from the engine and the
engine was turned over on the starter - result no oil as the pump
had not been primed.
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Consequently the
next stage in the manual was duly followed - the pipe leading from
the filter to the cooler was removed and a funnel, connected to
a length of old washing machine rubber hose was inserted. The funnel
was filled with oil and the engine was hand cranked backwards. If
you have ever tried this then you will know how difficult this is,
and how easy it is to skin your knuckles! Again still no oil pressure
- it was obvious that more pressure would be needed and it was decided
to resort to an ordinary tyre foot pump connected to the oil filter
to oil cooler pipe.
Care is needed
here to ensure that the pressure does not blow the hose off resulting
in everything getting covered in oil. After a few strokes of the
pump, the hose was topped up with more oil followed by further pumping.
During this process, it is possible to hear the oil being forced
through the pump. Everything was then reconnected and the engine
turned over on the starter once more - this time with oil pressure
achieved!
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