Troy-Bilt Storm 2420 Operator's Manual page 24

NOTE: Be careful not to damage the threads on the shaft.
6. Carefully position the hex shaft downward and to the left
before carefully sliding the friction wheel assembly off the
shaft. See Figure 7-8.
NOTE: If you're replacing the friction wheel assembly as a
whole, discard the worn part and slide the new part onto
the hex shaft.
7. Follow the previous steps in reverse order to reassemble
components.
8. Perform the Drive Control test on page 18 in the
Maintenance and Adjustments section.
24 S 7— S
ection ervice
Figure 7-7
Figure 7-8
If you're disassembling the friction wheel and replacing only the
rubber ring, proceed as follows:
NOTE: Not all friction wheels are serviceable. If this is the case,
simply replace the friction wheel assembly.
1. Remove the four screws which secure the friction wheel's
side plates together. See Figure 7-9.
Figure 7-9
2. Remove the rubber ring from between the plates.
3. Reassemble the side plates with a new rubber ring.
NOTE: When reassembling the friction wheel assembly,
make sure that the rubber ring is centered and seated
properly between the side plates. Tighten each screw
only one rotation before turning the wheel clockwise
and proceeding with the next screw. Repeat this process
several times to ensure the plates are secured with equal
force (between 6 ft-lbs and 9 ft-lbs).
4. Slide the friction wheel assembly back onto the hex shaft
and follow the steps above in reverse order to reassemble
components.
NOTE: Make sure the shift lever pin is in place in the
bearing housing. See Figure 7-7 inset.
5. After replacing the friction wheel, perform the Drive
Control test on page 18 in the Maintenance and
Adjustments section.