From: Stu Ellis (stuinnh@mvnut.us)
Date: Fri Feb 25 2005 - 15:39:00 PST
6.2 6.5 Diesel GM HD Oil pressure / Fuel pump switch-
is not the same as the fuel pressure switch which fits into the filter base
of a Stanadyne 80 fuel filter system.
"Stu"
Southern New Hampshire, USA
"Live Free Or Die"
MVPA #14790
1967 M151A1 Jeep
1964 M416 Trailer
1986 M1009 Blazer
-----Original Message-----
From: Military Vehicles Mailing List [mailto:mil-veh@mil-veh.org] On Behalf
Of chance wolf
Sent: Friday, February 25, 2005 5:43 PM
To: Military Vehicles Mailing List
Subject: Re: [MV] Fuel Pressure Switch
----- Original Message -----
From: "Jim Cooney" <triumphtrash13@eircom.net>
To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
Sent: Wednesday, February 23, 2005 11:50 AM
Subject: Re: [MV] Fuel Pressure Switch
> I'm confused. Is eBay item 7955790758 the same switch? If so it appears
that
> it is used on civilian trucks without STE-ICE too!
> If it's not the switch referred to here, what switch is it and where does
it
> go on a CUCV?
The GM parts book and the sheet that comes with the replacement item from
Stanadyne both identify it as a "Vacuum Switch" even though the official
military sticker on the box calls it "Fuel Pressure Switch". This Stanadyne
sheet in front of me refers to the "Vacuum Switch" also as the "Filter
Change Signal Switch", leading me to believe that in some applications the
switch would be part of a system measuring the increase in fuel vacuum (??)
you'd figure would be associated with a clogged/dirty filter (difficulty in
passing fuel, etc.) Guess it sort of worked like an electronic version of
the air cleaner restriction guage in some vehicles.
I just changed one in our notorious ex-Forestry M1008 which never starts
unless the moon is in Jupiter and the stars align just so, and found that
either the military or Forestry had already changed it out at some point -
but had changed it out *badly* - installing the new one somewhat cockeyed,
and cracking the plastic where the wires exit the unit body in the process.
It was enough to make it leak. Now this truck like my own M1009 - starts
pretty much first time, every time. Sure got sick of changing starters and
flex plates and lock-titing all the stupid starter solenoid hardware in
place to stop it showering hapless roadkill with nuts'n'bolts a-plenty 3
months after replacement. Sure makes a mess of the solenoid if you try and
start with some of the screws loose/missing. Broiled my starter relay too
(welded it closed, in point-of-fact.)
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