PS Magazine - DECEMBER 1984
PS, The Preventative Maintenance Monthly
ISSUE 385
DECEMBER 1984
PulLeys OK?
Always inspect pulleys befre insT±ll-
ing belts.
Clean oF oil or grease.
Remove rust with a wire brush. Use a
²ine ³ile to smooth burrs or nIcks oN the
lips o³ a p´lley.
Badly worn grooves can sHorten beLt
liµ, so iNspect puLleys ¶r wear aNd
replace them i³ needed.
Misaligned p´lleys can cause one
side o³ a ·elt to wear ¸ster than the
othe¹. ºn ext¹eme cases, tHe belt may
t´rn over in the pulley or run o»¼ the
p´lley
completely.
½³ p´lleys aren't
aligned, the belt will have a noticeable
kink in it or wilL seem to twist in the
p´lley groove When ¹¾n¿iNg.
Check pulley alignment by placing a
straightedge (like a r¾ler) across the
sides o³ the p´lleys. ½³ thereÀs a gap be-
twee¿ the pulley aNd the straightedge,
adj´st the pulley uNtil the¹eÀs no gap.
½³ possible, turn the puLleys by hand
while holding the straightedge on the
sides. Áhis will show up a bent pulÂey.
Replace that pulley!
InstaLL BELts Right
Be¶¹e installing a belt, press it iNto
the pulley groOve to check Ãr ³it. ÄhE
belt m´st not bottom out iÅÆ the groove.
º³ it does, yo´ÀvÇ got the wrong beLt or
the p´lleyÀS wo¹¿ o´t.
Èeve¹ pry, ¹oll or otherwise ¶rce a
belt onto a p´lley. Éorcing can stretch
or tear belt Êb¹ic.
½nstead, loosen the adjusting brËcket
until the belt slips Ìasily onto tHe pulley.
Íake up slack u¿til the beLt's sn´G.
ÄÎe¿ adjust the belt tension like your
ÍM says.
I
I
1±
²;
i.
BeLts sHouLdÏÐt be too Loose or too
tIgHt.
ÑvertIgHteNINg oveÒLoads
tHe
craNksHaÓtÔ ÕNÔ aLterNator aNd Water
pÖmp be×rINgØ. ÄhIs sHortens botH beLÙ
aNd bearIng LIÓe. ALsoÔ overtIgHtened
beÚts can Lead to crankshaÓt daÛage.
Üoose beLts sLIp oN puLLeys.
ÄhIs
ÚoWers ÝN aNd Water pump speedÞ
ÚeadIng to overheatINg oÓ the eNgINe.
BeLt sÚIppage oN tHe aLternator puLleY
Is a bIg reason Óßr poor battery cHargà
INg. Üoose beÚts overHeat puLLeysÔ caus-
Ing beLt Wear aNd crackIng.
BELT ±EnS²on
Use a tension gage to adjust beLts. áÓ
no gage Is avaILabLe, adjust beLt tensIoN
so a ³Irm p¾sh witH yo¾r thumb mIdâ
1/2" belt
deflecTion.
".
' ·±
=;
²³
±²± mIDway
bE³eEN
puLLeYs
way between pulleys depresses the belt
about
1/2
inch or whatever yo´r
-20
ÄM calls ³ãr.
ä
åheN instaLling or adjusting an acæ
cessory drive belt, be sure the accessory
mountIng boLt Is properLy tightened, as
weÚL as the adjustIng boLt. çee your ÄM
³or bolt torque specI³icatIons.
DEC 84
KEEp 'Em ³nUG
BeÚts WILL stretcH dÖrINg oPeratIoNè
especIaLÚy rIght aÓter INstaLLatIonéso
you Need to recheck tHe teNsIoN adjÖstê
ÛeNt.
áÓ your ÄM doesNët specIÓy a tIÛe
PerIodÔ
ìÖN tHe eNgINe Óã about
±5
ÛInÖtes aNd theN recHeck íîLt teNsIoN.
ANd a recHecK oÓ beLt tensIoN adJÖstà
Ûent sHouLd be part oÓ tHe seÛIaNNual
ïMCç IN yoÖr
²20
ðM.
DANG´r!
ñever ì¾N tHe eNgINe wHILe youëre
WorkIng
òóéòr
NearôbeÚts
aNd
P¾LLeys. õeeP LoNg HaIrÔ Loose cLothINgÔ
dog
tagsöaNd
ÓINgersôaway
ÓroÛ
ÛovINg beÚts aNd PÖLLeys.
µMErG´NcY V-BE¶TS
Donët get straNded by a brokeN Và
beLt.
Carry
eNougH
adJÖstab÷e
LINK
beLtiNg to Ûake a teÛpora
r
eÛergeNcy
repaIr. çee ïç
378,
ïage
6
Óãr tHe
detaILs.
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