PS Magazine - DECEMBER 1984
PS, The Preventative Maintenance Monthly
ISSUE 385
DECEMBER 1984
M113 FOV .±²
7C L-Joint' Torque
Get the torque down right when you
install the new 7C U-joint in your
Ml 13-series carrier.
ThE instructions packed with the
U±joint kit, NSN 2520²01³0115-´809,
say torque the cap screws to 86µ94 lb¶
ft. Change that to 83-100 lb²Ft, and be
sure to use the right torque wrench
adapter.
Also, you
'Ii
do a better job oF torqu¶
ing iF you put the U²Joint together on
a vise. Then inst·ll the assembly to the
transmission anD di¸¹erential in
'
the
carrier.
IF you try to put the U-joint together
in place, youºll Find thereºs not enough
·
Adapter
NSN 5³20-00´2³µ¶6976
room to do the Job.»o the Job right and you wonºt have to worry about drive
line ¼ilure or a busted transmission caused by loose U²joint screws.
Switch CaN Block ChargiNG
The generator FielD switch on ML ´3²series vehicles seems to cause more than
its share oF problems.
The switch, which is located on top oF the ½el Filter, plays a vit·l role in
the chaRging system oF your vehicle.
Itºs designed to close an electrical circuit to recharge vehicle batt¾ries during
operation. It also prevents battery Discharge to gro¿nd when the engineºs o¸¹
and the master switch is on.
IF the switch dÀesnºt close the circuit, y<r batteries will eventually go dead
because theyºre not getting a recharge From the system.
IF it ¼ils in the "closedÁ position, your batteries will go dead by discharging
to
Â
ground.
Switch ¼ilure is most oFten caused
by
Ã
a short. A short is caused by water
getting into the switch thru the open enD
oF the street elboW in the opening on
the base.
You can prevent water damage by
replacing the elbow with pipe plug,
NSN 4730²00-277²6339.
Grease
fitting
opens at 12²15 PSI. A grease gun can
apply ¿p to 7 ,000 PSI. Äuess what gets
blown out iF the valve doesnºt open at
the right pressure?
»ried paint or dirt may have the
valve sealed sh¿t. ClÅan the valve oÆ
real good beÇre you pump grease into
the Fitting.
ÈF the valve is
OK,
and you have a
Éeaking ÊeaÉË could be youºve got the
wrong seal.
Èt aÉl goes back to the interchange¶
abiliÌ between the Ml 13Al-series hub
sealÍ NSN 5330µ0 lÎ035²9832Ï and the
NSN 5µµ0·0³·0µ5·98µ2
(
,±
(
NSN 5µµ0·0³·060·25µ³
ML ´3A2µseries hub seal, ÐSÐ 5330²
0Ñ-060µ2Ò3´.
Hub seal µ9832 can be useD on the
idler arm oF ML L3ALÓseries vehicles
onlyÔ H¿b seal ²253´ can be used on
the idler oF both series oF vehicles.
Õither seal will also work on the roadÖ
wheel arms oF both series.
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