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The fuel injection pump on my 1972 M109A3 2.5-ton 6x6 van with
LDT-465-1C multifuel engine appears to have a very slow leak near the
accelerator linkage. It's just enough to drip on the order of once per
day or so, and I suspect that the leak is the reason that I need to
crank for a while to start the engine if it has sat for over a week
since the last time I ran it (i.e., some air gets into the system if
it sits for a while). Once I have started it, it'll start very easily,
whether hot or cold, as long as it has been run recently.
The fuel injection pump is the part of the truck that I feel
least-qualified and least-equipped to touch... but I've heard that
good rebuilt pumps for that engine are *VERY* expensive. So, I'd like
to get some advice from many of you learned and experienced list
members: Assuming I can find a gasket and seal kit, should I be able
to remove the pump, disassemble it enough to replace some or all of
the gaskets and seals, and then reassemble and reinstall it without
affecting its calibration or timing? How tough would that job be?
If the consensus is "don't think about it", then can anybody recommend
a good pump rebuild shop in Southern California that could work on my
pump?
My truck came from DRMO with a very low-time engine, apparently made
in 1980 and 1.1 running hours out of its 1989 rebuild. It seems to run
well other than that first-start-of-the-weekend problem, so I
certainly don't want to harm it with a botched injection pump job!
Thanks in advance for any advice!
-- Mark J. Blair, KE6MYK <mblair1@home.net> PGP 2.6.2 public key available from http://pgp.ai.mit.edu/ Web page: http://www.qsl.net/ke6myk/ DO NOT SEND ANY UNSOLICITED COMMERCIAL EMAIL TO THIS SITE
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