PS Magazine - TB 43-PS-429
PS, The Preventative Maintenance Monthly
ISSUE 429
AUGUST 1988
M113-Series
FOV
Mech .±²
SARGE, I TieHt±²D
³h´ BoLµs¶ bU·
¸¹º »Pr¼CK½¾
¿' ÀÁl ÃÄÅÆÇ!
Sprocket wheels and the bolts that hold
the sprockets on the wheels must be treated like matched sets.
Mixing the two sizes of bolts with the two types of sprocket wheels causes
equipment damage and crew injUry.
The older-style sprocket wheel, with part number 8763352 stamped on it, uses
a I 1/4±in self±locking bolt, NSN 5306±00-150±3146. No other bolt will do.
The new±style sprocket wheel, identified by the part number 10942567 sta²ped
on it, Uses a I 3/4±in self-locking bolt, NSN 5306±0 L±131-9³25.
´f you PUt the I-in bolt in the
new-style sprocket wheel,
there won't be enough threads
engaging the wheel to hold the
sprocket tight. ´t'll break oFµ.
´f you use the I 3/4±in bolt on
the old±style sprocket wheel,
yoU can't tighten the sprocket.
a
loose sprocket doesn't stay
in place.
Both of these bolts have ¶ive
"grooves· in the head surface.
Do not use any other type of
bolt, and replace all sprocket
mounting bolts that do not
have these grooves.
Torque the bolts to 110±115
lb±ft.
r-±²
18
M³³ OA2 SP Howitzer ´µ
Change Order to Prevent
Damage, Injury
ÈÉÊËÌ ÍM
cÎÏNgÐÑ WÒÓÔ
pÕÖv×nØ ÙÚÛ
ÜÝÞßàám/
/
f"c
\#
¸age 2±56 of TM 9±2350-304±10 gives you section chiefs infO that coUld damage
your howitzer and injure your crew.
Do not release the travel lock be¹ore you make sure the cannon is in battery and
the oil reserve is built up. ºtherWise, you coUld have the tube in the well, along
with anyone who happened to be in the way.
The list of steps you take to begin cannon elevation verification for the loader/
rammer needs to be shortened and rea»¼anged.
½ith the engine running, the trans²ission in neutral and the parking brake set,
lower the spade. Then do these steps:
¾
Make sure the cannon is in battery (¸age 2-54).
¾
Make sure the oil reserve is established and the replenisher has been checked
(¸age 2±78).
¾
Make sure the travel lock is re¿eased and stowed (¸age 2±47).
The TM will be changed soon. ChieÀs, use the infO now.
âuã 88
19
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