Service manual

80 M411429
Section 5 Service Procedures
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect electric power to the tumbler before servicing.
• Close gas shut-off valve to gas tumbler before servicing.
• Close steam valve to steam tumbler before servicing.
• Never start the tumbler with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the tumbler is properly grounded.
W002
WARNING
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
102. IDLER SPROCKET
Nonreversing Tumblers
a. Remove drive guard.
b. Remove drive chain from idler sprocket.
c. Remove jam nut and sprocket from bolt. Refer
to Figure 31.
NOTE: After installing chain and sprocket, adjust
chain. Refer to Adjustments Section.
d. Reinstall chain and drive guard.
103. SHEAVE
a. Remove drive guard.
b. Loosen jam nut on chain idler sprocket and
move idler sprocket to the right. Refer to
Figure 31. (Nonreversing tumblers only.)
c. Run chain off drive sprocket.
d. Remove belt tension by loosening idler
capscrews or bolt.
e. While supporting idler housing, remove the
upper and lower bolts, nuts, and lockwashers
holding guide rails to trunnion housing and
motor bracket. Refer to Figure 31.
f. Remove the sheave, guide rails and idler
housing as an assembly from the rear of the
tumbler.
g. Remove snap ring from idler shaft. (Non-
reversing models only).
h. Loosen two setscrews holding sheave to idler
shaft and pull sheave off idler shaft.
i. Remove key from shaft keyway.
IMPORTANT: Reassemble sheave to idler shaft.
On nonreversing tumblers, run sheave out until it
butts against snap ring. Make sure that shaft key is
correctly positioned under setscrew. Tighten
setscrew above key first, then tighten other setscrew.
IMPORTANT: Nonreversing Tumblers — Realign
motor pulley directly under sheave by loosening
drive motor mounting screws and repositioning
motor on mounting bracket.
Figure 30
CHAIN
CYLINDER
SPROCKET
IDLER
SPROCKET
DRIVE
SPROCKET
IDLER
HOUSING
ATTACHING
BOLT AND
NUT
IDLER
RAILS
LOWER GUIDE
RAIL BOLT
SHEAVE
BELT
TU202-PT
JAMNUT
BELT/CHAIN NONREVERSING