PS Magazine - SEPTEMBER 1985
PS, The Preventative Maintenance Monthly
ISSUE 394
SEPTEMBER 1985
When you grease the hubs and arms of your car-
rier's roadwheels, don'T overlook the FTtings on
the idler. ±hey need lubing, too²
±his is especially true ³r the grease FTTing jusT
above the end of The Track adjuster. It's generally
covered with mud and overlooked²
If The idler arm doesn'T get lubed like the LO says,
you may end up with a "´ozeNµ arm²
Since The Track adjuster increases and decreases
Track Tension by moving the idler back a¶d ³rth, a
´ozen arm means you have a hard time adjusTing
Track Tension· And if you can't ´ee it up, the carrier
geTs a Trip to DS.
.
± The Eyes² Have
³
It
When it comes down To iT, your eyes
are an aid in checking track bushing
wear.
±he wear gage in your BII is besT.
With it,
you can Tell quickly if the
disTance beTween the shoe bushing is
more than 4 15¸16 inches. If it's more,
you've goT worn bushings.
Use
track
bushin
g
gage
Anything less than 4 ¹5¸¹6 inches is OKºmaybe. ±hat's where you've got
To use your eyes» Keep an eye on your Track.
Good
bushin
g
22
"
Bad
bushin
g
SEP 85
´orue AdapteR Use
±
If you use the torque wrench adapter when torquing the bolts on the 7C U¼joinT
on M113½series carriers, remember one thing: You may get more or ¾ess torque
on the bolt than what you read on the wrench.
If yO±R SET-±p
lOOKS L²KE TH²S,
yO± NEED TO
TORq±E TO
63-7±
l³-fT.
If yO±R SET-±p
lOOKS l²KE TH²S´
TORq±E TO
²3-100
l³-fTµ
If yO±R SET-¶p
lOOKS l²KE TH²S´
TORq±E TO
1³±-1±0
l³-fT.
In all Three situaTions, you'll be putting 83¿100 lb¿À on the bolt.
DoN't ´et if you can'Á Fnd the M247 (SG± York) in Appendix E of DA Pam
738½Â50 iN MaiNteNaNce MaÃagemeNt UPDıE 6 (May 85). It's thereºon Page
130, ÅeÆion 1, under Equipment Category Code (ECC) GD, Gun AAA SP 20
MM. ±he ECC's right, but the 20 MM is wrong· ±he headshed says the SG±
YorÇ will appear uNder 40 MM guns iN UÈDıE 7, scheduled ³r Éov 85.
µepai¶, Don't ´oss
±He Next time you replace a track teNsioNer assembly on your MÊ 13¿series
vehicle, doN't toss the old one. It's repairaËle. ±urn it in to your DS uNit and
save UNcle $83.Â4.
p´
µ
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