PS Magazine - TB 43-PS-427
PS, The Preventative Maintenance Monthly
ISSUE 427
JUNE 1988
M915 Tractor Trucks .±±
When you have an axle shaft out to
replace these bearings, you have to be
sure you Get oil to the BearinGs.
To do ±at, raise one end of ±e axle so
²he wheels arE about fOur inches oF the
Ground. Hold it there ³or a couple of
_
minu²es. That lets oil ´rom the diµeren-
}:
=²;³
R´µ¶i
tial ¶ll ±e bearinG cavity and lube the
,
±
²=!³
\1
bearinGs. Lower it and raise ±e o·her
1
end.
There are tw¸ tyPes of axles used on M915 tractor ¹rUcks. And wheel bearinGs
on ±em use diºerent lubes!
»n older ¼xles, the wheel ½earinGs Get Grease. The Newer axles¾¹he same ones
used oN M915A¿ 's¾have oil lubÀd beaRinGs.
The only way to tell which axle you have is wheN an axle shaft is out. The new
axle doesn't have an outer Grease seal.
The nÁw ¼xle uses a new inner wheel bearinG,
NSN
3110Â00-227-3Ã1Ä.
Keep ·he wheelS Off
·he g¸OUnd fO¹
a
COUple
Of mInU·eS
JºN 88
Wi± the vehicle level aGain, add more Gear lube thÅouGh thÆ diÇerential filler
li
!I.L
hole until it's Èll.
Éor more infÊ, see Ëara 2Ì14 of TÍ 43Ì0001-39-2 (Apr 87).
If you doN't have ±at TÍ, Get a copy of the info Îom your local TA C»M LoGistic
Assistance Ïepresentative.
The TM's are ÐÑzzy on how to service ¹he
Íendix AD-2 air
dryer on M915-series,
M915A¿ 's, and HÒMÓ trÑcks. As a result, Ô
some mechs just PuÕl out ±e old dehydrate carÖ
tridGe and rePlace it with a new one.
×at's ±e exPensive way! ÏeplacinG the carØ
tridGe,
NSN
4ÙÙ0-01-087ÌÃ216, costs $107.46.
×e best Úay is to cleaN and rePair ±e caRtridGe
wi± desiÛÛant Parts kit,
NSN
2940Ì01-081Ì139Ü.
×e kit has everythinG you need, includinG thÝ
instrUctioNs, to make the cartridGe Good as New. It
costs only $42.60.
JºN 88
4»
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