PS Magazine - APRIL 1983
PS, The Preventative Maintenance Monthly
ISSUE 365
APRIL 1983
Dear Mr.
K.K.,
Yes, oil in the flywheel bellhousIng Is Normal. M915-SerIes trucks arE
among tHe few vehicleS wIth a "wet flywheeL±.
.
The input clutch group² whIch connects the eN³e fLywHeel
.
to the tr
´
NSµ
mISsion input shaft, Is operated and cooled by
01±²
AS Part of ¶tS operaU
·
¸²
Pressure builds up and Is released by forcInG oIL INto the flywheel hous¶ng
where it dRaiNs back into the Input clutch grouP.
¹
ThIs ºwet flywheel± oPeratioN requIreS » SPecIal Sealed Starter. To
prevent seepage at the gasket² torque the boltS to 130¼170 lb-
H
o
{
½
H
¾
f
Don't
worRy
about
temperatuRe
³8
More Info Is cominG on the PropeR
temPeRature ran¿e and² maybe, on a
new Ga¿e.
,
CABLE 12±58²³´
Àear ÁRÂ
L´
FÂ,
J
ÃoundS Like the Ä2 relay waS wIrÅd
up wRong when the blackout lIGht kit
was Installed Check FIG 3-17, Ãheet 3
of 3, in TÁ 9¼232Ƽ266-20, w/C6Â
Make suRe that lead 12258218 goes
to Çerminal¹2 on relay Ä2, and that the
daRk green wire goeS to terminal 1Â
.
M880-Series l-Ton Trucks .
..
±
WheEl
Bearing wRencHes
.
±
Because of modeL aNÈ year dIffereNceS² yoÉ m»y NeeÈ »Ny oNe of
5
Socket
wreNches for adjustiNg wheel bearIngS.
TRUcK aXle
WRµNcH
SIZe
4x2 front
¶·0"¸¹-ºGt»¼37
1%±In, 1-In dr²ve
4x4 fRont (earLy)
5J20oO-168±²³´µ*
2³´-In, %-in dRIve
4x4 fRont (Late)
¶·¸¹º».¼½i3¾c¿ÀÁÂ
½¾¾/¿6
-In, %-In µrive
A¶L ReaR (eaR¶y)
5·¸¹ºQ»-¼½¾¿ÀÁÂÃ9Ä* 2Å-In, %-In dRIve
A¶L rear (Late)
ÃÄÅÆÇÈÉÊËÌlÍIs4Î
À9/
¾
6
-in, Æ-in dRIve
ÇÈIsted In the -20P TMÉ
Êour authorIty for orderIng tHe tooLS Not IN your -Ë0Ì ÍÎ IS APPeNÈIx A,
CTA 50¼970.
Also² those 1Ïin drIve SocketS reqÉIre a Ð-to-1ÑIN SocKet wreNch »ÈaPter,
ÒÃÒ 5120¼00¼227¼8104.
³9
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