Re: [MV] Towing my new M109A3 home

mblair1@home.net
Wed, 29 Sep 1999 20:15:31 -0700

Well, all I had to do to start it was to pour some fuel in tha tank
and bleed the air out of the system. The air pressure started to come
up, but I didn't run it long enough for the buzzer to go off because
the oil pressure gauge did not come up. I replaced the missing gauge
with an NOS replacement. The wire is good, but I suspect the sender
might be bad. I have a replacement 120 PSI sender which I ordered with
the 120 PSI gauge just in case the truck had a 60 PSI sender (it
doesn't); the replacement's resistance changes from about 0 ohms to
around 13 ohms at 30ish PSI when I apply air pressure (it had an
ordinary 1/4" NPT fitting, and I just happened to have 30 PSI in the
tanks!), so I figure it might be good. Does anybody know how oil
senders and gauges are supposed to work? I'll bench-test the sender
and gauge with air pressure, and try replacing the sender if my
replacement works. I hope the pressure was really there, and the meter
reading was just wrong... The gauge came with a mounting clip for a
dashboard about 3/4" thick, so I'll need to make a different clip out
of some sheet metal.

It'll still be a while before I try driving the truck; one tire is
flat, and I wasn't about to try airing up a split-ring without a cage!
The spare is also flat, so I'm TSOL until I find a shop that mounts
military split-rings and take in the bad wheels. I aired the rest of
the tires up to 50 PSI, and I'll check them again in a week or so to
see if any other tires are leaking. I need to order some big jack
stands, anyway.

Those dual wheels are a pain in the @$$. I normally try to keep my
green gear all-original, but I'm putting valve extension hoses on the
inner wheels anyway!

The brake pedal feels good, and the air pressure stays around with the
engine off. It makes the right kinds of airy noises when I press the
brake pedal. When I bled the tanks, a small amount of black oil (or
maybe filthy oily water?) came out of one of them. Is that normal?

My back is killing me (more from man-handling the hangar doors than
working on the truck!). I'm looking forward to taking a break from my
new toy for a week! (Yeah, right! Y'all know I'll be out there this
weekend, even if I'm in a back brace! :-)

--
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/
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