PS Magazine - TB 43-PS-592

PS, The Preventative Maintenance Monthly

ISSUE 592

MARCH 2002
PS Magazine - TB 43-PS-592 - Page 6 of 32
PS 592
MAR 02
11
M1022A1 Dolly Set…
A
dolly set can sit for months at a time in the motor pool. That idle time creates
big trouble in its air brake system.
Changes in temperature cause condensation to form in the dolly set's air brake
system. That moisture leads to corrosion, which plugs up brake valves and cylin-
ders. That leads to brake failure.
You can head off a lot of condensation
by leaving the air tank valve open when
you park the dolly for long periods.
In addition, drain moisture from the air
tank before you head out with the dolly.
After vehicle hookup, drain the tank and
let the air pressure build up in the vehicle's
brake system, then drain the tank again.
Repeat this procedure until no more
water comes out of the tank.
M103/M105/M149-Series Trailers…
M1070 HET Tractor…
Tough to Find Separator Parts
N
eed a fuel-water separator head or air dryer clamp for your M915A2,
M916A1 or -A2 or M917A1 or -E1 truck, but can’t find them in the TM or get
the supply system to deliver?
Look no further:
While Item 1 in Fig 40 of TM 9-
2320-363-24P shows the fuel-water
separator element and body, the
head is Item 12 in Fig 32. It’s NSN
As for the air dryer clamp that
breaks often when removed during
services, it’s shown as Item 38 of
Fig 206. Problem is, the supply sys-
tem is real slow on filling demands.
So buy the clamp directly from a
local Freightliner dealership and save time. Ask for part number
MID/KAF9000056. Freightliner’s CAGE code is 64678.
Headlight Ground Wire Check
Fuel-water separator head,
Order clamp
from Freightliner
“It's the one
under
the trailer bed that
lubes the hand
brake cable.”
“That
means you
can't lock
the brake
when the
trailer is
parked.”
“Enough binding
-
and pulling
-and
the cable can
snap.”
“Without lube,
the cable
binds
-making
the hand brake
hard to set.”
Draining the tank just once may
not get all the moisture out
T
ake a minute, drivers, to eyeball the driver’s side
headlight’s ground wire on your M1070 tractor.
If the ground wire is drooping, it may be loose
enough for the radiator or alternator fan to snag it.
So tie up the loose ground wire to the nearest
frame ground strap with an electrical tie, NSN
That’ll keep your headlights working and sparks
away from the engine area, where you sure don’t
need ‘em.
Operators, one
of the grease fit-
tings on 1 1/2-ton
trailers is often
overlooked.
since when does
a headlight make
noise
when it
goes out!?
M915-Series Trucks…
So, keep the
hand brake
cable lubed.
During scheduled
services, always give
the fitting
four
to
five
shots of grease.
Strap wire away
from danger
592. 10-11 (C)
1/25/02
2:03 PM
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