0
, .
Drive
Colts
--...-
OM 2012
B.
-Chick
BeIt
Tcnsicn
Check belt tension
every ZOO hours,
or bi-week!y.
A
l~eit
whIvh
is too !ight
is
destructive
to t-he bearings of the driven
pert.
A locsc beit will
slip and cause
inefficient
operation
of the part being driven.
Belts may be checked with
a belt tension
gage,
Detr0i.t
DieseI
No.
Bi-33-73FA,
or equivulen:.
(See Fig.
12 for tension
values.)
Check at midpoint
between
puf Icys.
-
.
7
Fan Drive
Aiternatcc
. Drive
50-60
50-70
,
Belt Tension
Chart
(lbs.,&eit)
Figure
12
Belt tension
may also be checked by a firm push with
the thumb,
at a point
mid-
way between
two put leys.
A properly
adjusted
belt should
be depressed
l/2
to
3/4
inch.
C.
Belt
Adiustment
(1)
Alternator
belt
Mjustalternatcr
drive belt as follows:
(See Fig.
13)
.(a)
Loosen pivot
screw
ond nut
(3).
(b)
Loosen adjusting
bracket screw (1) and use a long screwdriver
(or pry
bar) to pry the alternatcr'(4)
outward
to increase belt tension.
CAUTION:
EXERCISE
CARE
TO
PREVENT
DAMAGE
TO
ANY
COMPONENT.
Aug 25'85
2-l
Page 13