Bob
For what it's worth, I was advised by Peter Green who rebult my PB engine in
2000/01 to adapt the standard internals of the Tecalemit filter housing by
substituting a machined aluminium bottom plate (large spigoted washer if you
will) in place of the bottom spigoted washer you describe. The replacement
simply simply drops into the bottom of the filter housing, with an O-ring on
the spigot ensuring a good seal. The object of this mod is that you can
then use a replaceable filter instead of the (admittedly original) felt
filter, which, arguably, provides superior filtration.
The replacement bottom plate is, I believe, generally available from members
of the Triple-M fraternity - certainly over here in the UK - and the
replacement filters are as used in Mercedes - the following is from an entry
from John Horsfall on the Triple-M bulletin board 27 May 2004
"The filter is Mann H614x or H614n (The difference is in the gasket which we
don't use). I got this filter from a local auto supplies. If you go to the
Mann website there is a list of mercs which used this filter which should
allow you to get the Halfords equivalent. "
and the following contribution from Andrew Bradshaw the same day:
"I obtained these details via Peter Green.
http://buildingsite.igentics.com/sites/972ED3A7-C865-4556-9F0C-67505DC8D42D/
images/mg%20filter%20spacer.jpg
It is apparently necessary to have a slightly larger centre hole for 6 cyl
cars and in both cases this hole should be tapped with a thread to accept a
removal tool - T-bar or similar.
I think that an O-ring can be used but may not be essential. No doubt Peter
will provide any missing essential info'"
Hope this helps.
Regards
Dick Morbey
PA 0743
-----Original Message-----
From: owner-mg-mmm@autox.team.net [mailto:owner-mg-mmm@autox.team.net] On
Behalf Of Bob Grunau
Sent: 12 August 2005 20:13
To: MG-MMM
Subject: PA oil filter
Now trying to replace the oil filter in the PA. Several problems :
1-I have a replacement felt filter which seems too small in diameter
relative to the filter that came out. Length appears correct. However when I
install it in the filter housing, with the top cover, there is no end
pressure on the element to seal off the ends. I THINK I am missing some
internal pieces in the filter. There was no lower washer under the original
filter, a second filter assembly I have has a spigoted washer on the bottom.
Does the later filter with integral relief in the cap have a spigot washer
below the filter element inside the filter casing?
2-Parts book says " felt washer p/n MG 489/228 " is required for the later
filter assembly. Any idea what size and where this goes? I assume at the
bottom of the filter casing? Also "spring for element , p/n MG 489/229 " is
indicated, how big and where does it go?
2- Top cover of the filter assembly on the car has the relief valve integral
with the cover. Should this relief valve unscrew for cleaning? I'm reluctant
to "screw around " with it as I see what looks like a crack between the cap
and the relief valve extension.
3-I have two spare complete filter assemblies, both these use a different
cap with the relief valve as a separate piece under the cap and a spigot
washer under the filter element. I believe these were on cars prior to
engine 2001AP. Will this type of cap/relief arrangement fit the later
casing? Any benefit to using either cover?
4-Any suggestions on where to get replacement oil filter elements?
Thanks for any suggestions.
Bob Grunau PA-0531, with wrong later engine 2452 AP.
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