Service manual

PN 4237242C
4.19-2
SERVICE AND REPAIR PROCEDURES
TRAVERSE DRIVE BELT
4. Remove the belt from the tensioner pulley (Figure 4.19-1):
a. Slide the traverse housing to the right and loosen the screw that holds the tensioner
bracket and pulley in place (traverse belt tensioner bracket screw).
Note: You do not have to loosen the traverse belt spring tensioning screw. The
tension is set at the factory and should not need to be altered.
b. Remove the belt from the tensioner pulley by forcing the tensioner bracket right,
against the tension spring, until there is enough slack in the belt to slide it over the
pulley's flange.
Note: A large flat-blade screwdriver can be used to pry the tensioner against the
spring pressure.
5. Remove the belt from the unit (Figure 4.19-1):
a. Locate the screwdriver access cutout in the lower left portion of the traverse
mounting bracket.
b. Loosen the #1 Phillips-head screw that clamps the belt to the traverse housing just
enough to allow the belt to be removed from the clamp.
c. Remove the belt. It is now completely free of the instrument.
Installation
1. Clamp the new belt to the traverse housing (Figure 4.19-1).
2. Install the belt onto its pulleys (Figure 4.19-1):
r Loop the right end of the belt over the motor pulley.
r Loop the left end of the belt over the tensioner pulley.
r Slide the belt over the idler pulley.
3. Seat the traverse tensioner bracket and move the traverse housing back and forth to fully
seat the belt (Figure 4.19-1). Once fully seated, tighten the tensioner bracket/pulley
screw. The spring will have set the proper belt tension.
4. If the spring tensioning screw was moved, establish proper tension by turning the screw
until the screw is just coming out of the threaded bracket. The acceptable tolerance is
one to two threads exposed.