7.15
CLUTCHING
ROLLER INSTALLATION
1. CAUTION: Use care to start the pin straight. Aluminum
burrs could pass through into the roller bushing causing it
to bind and stick. Also use care to make sure the roller
remains aligned when the pin is driven through. The roller
busing could be damaged causing premature wear and
roller failure.
2. Drive pin into the spider leg.100" -.125" (0.25 - 0.32cm)
beyond the first land of the spider leg (8).
3. Install one washer (3) on the portion of the pin that is
protruding from the spider leg.
4. Install new buttons into the spider
5. Place roller (5) in spider leg and center it on the pin.
6. Place a second washer on the other side of the roller.
7. Place the spider on a vise.
8. Install pin centering tool (PN 2870401).
9. Drive the roller pin through the second land of the spider.
10. Repeat this for each roller.
11. Measure the width of the spider leg with the buttons
installed (9) and record the measurement. Specification for
the width of the spider with buttons installed is 1.496"
(37.99mm).
12. Measure the width of the moveable sheave towers (10) and
record the measurement. Specification for the width of the
opening of the moveable sheave towers are 1.50"
(38.1mm).
13. Subtract the spider measurement form the tower
measurement. The clearance between the spider buttons
and the moveable sheave towers is .002" - .004" (.05 -
.10mm).
SPIDER INDEXING
NOTE: Spider indexing effects belt to sheave
clearance and clutch balance. Please read all
procedures before proceeding.
1. Remove and Disassemble clutch See “DRIVE CLUTCH
DISASSEMBLY” on page 7.13
2. Add or remove spider washers as required to achieve
desired belt to sheave clearance. Make sure that the
stepped washer (A) is on the top of the spacer stack (B).
For example: If belt to sheave clearance is 0.020” too large,
removing one 0.020 shim will position the movable sheave
closer to the fixed sheave reducing belt to sheave clearance by
0.020".
3. Place the correct number of space washers (B) beneath the
spider. The following washers are available for fine tuning.
PN 5210754.050" (1.3mm)
PN 5210753.032" (.8mm)
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