6.8
CLUTCHING
NOTE: Belt is normally positioned so that part
numbers are easily read.
3. To remove drive belt, put transmission in gear, apply brake,
pull upward and rearward on belt to open driven clutch
sheaves, pull out and down on belt to slip over the driven
clutch outer sheave.
Belt Inspection
1. Measure belt width and replace if worn severely.
Generally, belt should be replaced if clutches can no
longer be adjusted to provide proper belt deflection.
• The top edges have been trimmed on some drive belts.
It will be necessary to project the side profiles and
measure from corner to corner.
• Place a straight edge on each side of the drive belt.
• Place another straight edge on top of belt.
• Measure the distance where the side straight edges
intersect the top.
2. Inspect belt for loose cords, missing cogs, cracks,
abrasions, thin spots, or excessive wear. Replace if
necessary.
3. Inspect belt for hour glassing (extreme circular wear in at
least one spot and on both sides of the belt). Hour glassing
occurs when the drive train does not move and the drive
clutch engages the belt.
4. Measure belt length with a tape measure around the outer
circumference of the belt. Belts which measure longer than
nominal length may require driven shimming or engine
adjustment for a longer center distance to obtain proper belt
deflection. Belts which measure shorter than nominal
length may require driven shimming or a shorter center
distance. Remember, proper belt deflection is the desired
goal - not a specific center distance.
5. Replace belt if worn past the wear limit. Belts with thin
spots, burn marks, etc., should be replaced to eliminate
noise, vibration, or erratic PVT operation. See
Troubleshooting Chart at the end of this chapter for
possible causes.
Belt Width
New: 1.188” (3.02 cm)
Wear Limit: 1.157 (2.94 cm)
Belt Width
Clutch Center Distance:
10” + .1/-.05 (254 + 2.5 / -1.3 mm)
Belt Outer Circumference
New: 41.225”
(104.71 cm)
Wear Limit: 41.413” (105.19 cm)
Center
Distance
To Next Page
Loading...
Need help?
General
