Owner Service
23
MAN1331
(09/29/22)
BELT SERVICING
Belt Replacement
■ Use care when installing or removing belt from
spring-loaded idler. Springs store energy when
extended and, if released suddenly, can cause
personal injury.
One of the major causes of belt failure is improp-
er installation. Before installing a new belt, check the
following:
1.
Check pulley shafts and bearings for wear.
2.
Check pulley grooves for cleanliness.
3.
Make sure spindles turn freely and without wobble.
If grooves require cleaning, moisten a cloth with a non-
flammable, non-toxic degreasing agent or commercial
detergent and water.
Avoid excessive force during installation. Do not use
tools to pry belt into pulley groove. Do not roll belt over
pulleys to install. This can cause hidden damage and
premature belt failure.
Figure 12.
Belt Routing for TBW12.40 Wing Deck
4.
Grasp belt between spindle sheave C, spring-load-
ed idler B, and spindle sheave D. Pull spring-loaded
idler with belt to obtain enough belt length to route
it over sheave C.
5.
Check that spring-loaded idler pivots freely. Clean
and lubricate if necessary.
6.
Remove belt from remaining sheave grooves and
then from mower. Inspect belt for damage. A belt
that will not lay flat on the ground indicates broken
cords.
Alternate Removal Method
1.
Insert 1/2" ratchet or breaker bar into square hole
on idler arm. Rotate idler arm clockwise to remove
tension on belt. Obtain enough belt length to route
it over spring-loaded idler B then slowly rotate idler
arm counterclockwise to reduce tension in spring.
2.
Check that spring-loaded idler pivots freely. Clean
and lubricate as necessary.
3.
Remove belt from remaining sheave grooves and
then from mower. Inspect belt for damage. A belt
that will not lay flat on the ground indicates broken
cords.
Install Belt
Figure 13.
Belt Routing for TBW15.40 Wing Deck,
TBW12.40 Rear Deck
■ Use care when installing or removing belt from
spring-loaded idler. Springs store energy when
extended and, if released suddenly, can cause
personal injury.
1.
Route belt around spindle sheave F, backside idler
E, and spindle sheave D as shown in Figures 12–14.
2.
Route belt around backside idler G then slide belt
under drive sheave A and over spring loaded back-
side idler B. Position belt in drive sheave grooves,
except for spindle C.
3.
Grasp belt between spindle sheave C, spring-loaded
idler B, and spindle sheave D. Pull spring-loaded idler
with belt to obtain enough belt length to route it over
sheave C.
4.
Adjust belt guide G to provide 1/16" to 1/8" clear-
ance from belt for decks in Figures 13 & 14. Tighten
bolt to 85 ft-lbs.
CAUTION
A
F
E
D
C
CD9270 AB
B
.12
F
G
A
B
C
CD9269 AB
D
E
H
CAUTION
