Mower Belt Replacement - Allis-Chalmers AC-130 Series Operator's Manual

Troubleshooting, Adjustment, & Service

Mower Belt Replacement

To avoid damaging belts, DO NOT PRY
BELTS OVER PULLEYS.
NOTE: It is not necessary to remove the mower to install
a new belt. However, for easier access mower can be
removed. See "Mower Deck Removal" in the OPERAT-
ING THE TRACTOR section.
1. Park the tractor on a smooth, level surface such as a
concrete floor. Disengage the PTO, turn off the
engine and lock the parking brake. Remove the key.
2. If mower is not removed, lower the mower lift and
place the mower in the lowest cutting position.
3. Push the idler arm (A, Figure 36 or 37) to relieve belt
tension. Drop the belt from the PTO (electric clutch)
pulley.
IMPORTANT: Note the position of all belt guides relative
to the belt and pulleys before loosening.
4. Loosen the mower upstop (C, Figure 36) or belt cover
(C, Figure 37).
5. Remove the old belt and replace with a new belt.
Make sure V-side of belt runs in arbor pulley grooves
and the flat backside runs against the idler pulley.
6. Position the mower upstop (C, Figure 36) in its origi-
nal position. There must be 1/8" (3 mm) clearance
between the mower upstop and pulley.
7. Position the idler pulley belt guide (D, Figure 36 or
37) in its original position up against arm (A) so that
there is a 1/8" (3 mm) gap between the pulley and
belt guide.
8. Install mower on tractor if it was removed. See
OPERATING THE TRACTOR section.
9. Run the mower under no-load condition for about 5
minutes.
A
B
Left Side of Mower
Figure 36. Typical Mower Belt Routing - Two Blade
Decks
A. Idler Pulley Arm
B. PTO Pulley (Engine)
C. Mower Upstop
D. Idler Pulley Belt Guide
B
Left Side of Mower
Figure 37. Typical Mower Belt Routing - Three Blade
Decks
A. Idler Pulley Arm
B. PTO Pulley (Engine)
C. Belt Cover
D. Idler Pulley Belt Guide
34
D
C
FRONT FRONT
D
C
FRONT
A