Table of Contents
Advertisement
Check Drive Belt Tensioner
--- every 1000 hours or once a year
1. Park the machine following the same procedures as
described on page 7-8 for preparation of inspection/
maintenance work.
2. Install articulation lock bar to the front and rear of the
frame by following the procedures described on page
7-10.
3. Open the side cover to access the engine.
4. Check the belt deflection at the longest span of belt (1).
The deflection must be checked at the center of the
span.
The maximum deflection allowed in the belt is 9.5 to 12.7
mm (3/8 to 1/2 in).
f
NOTE: The belt tension is automatically adjusted by the belt
tensioner. No adjustment is necessary.
5. With the belt installed, verify that neither tensioner arm
stop is in contact with the spring casing stop. If either
stop is touching, drive belt (1) must be replaced.
After replacing the belt, if the tensioner arm stops
are still in contact with the spring case stop, the belt
tensioner must be replaced.
6. Check tensioner (2) for cracks on arm, pulley, and stops. If
any cracks are observed, the drive belt tensioner must be
replaced.
f
NOTE: Consult your nearest authorized dealer for the drive
belt tensioner replacement.
7. Check belt tensioner pulley (3) for any dirt or damage.
If it is dirty or damaged, contact your nearest authorized
dealer for cleaning or replacement.
8. Check the location of drive belt on belt tensioner pulley
(3).
The belt must be centered on, or close to the middle of,
the pulley.
Misaligned belts, either too far forward or backward, can
cause belt wear, belt roll-off failures, or increase uneven
tensioner bushing wear.
MAINTENANCE
2
7-85
3
2
3
1
90Z7B-7-77-1
1
90Z7B-7-77-2
1
90Z7B-7-77-3
Advertisement
Table of Contents
