Toro 38700 Service Manual page 38

The freewheel steering system is used on the walk-behind
rotary broom. Handle mounted triggers allow clutching
the wheels simultaneously or independently, so one or
both wheels can "freewheel". This feature makes turning,
reversing, and traction control simple and efficient.
When the drive is engaged, it is engaging the friction
wheel. The hex shaft turns and drives the chains to the
32-tooth gear, in turn driving the 44-tooth gear powering
the wheels. Each wheel is declutched by engaging its
handle mounted trigger; this pulls the clutch cable, which
rotates the shift collar. The shift collar, following a cam,
is forced outwards toward the wheel, in turn, pushing
into the spring loaded pawls to disengage the 11-tooth
pinion gear from the 32-tooth gear.
Disassembly
Drain the fuel from the fuel tank. Remove the broom as
outlined in Broom head section. Tip the unit forward onto
the hood to access the rear covers and plate. Support
the broom with jackstands.
1. Disconnect the shift linkage and remove the wheels.
2. Remove the upper and lower covers.
Walk-Behind Rotary Broom Service Manual
TRACTION DRIVE SYSTEM
3. Remove the bottom plate.
4. Remove the 2 cap screws securing the bearing
retainers that hold the hex shaft to each side of the
traction assembly. Remove both bearing retainers.
NOTE
This will ease removal and reinstallation of the
drive chains.
Fig. 004
Fig. 005
Fig. 006
Fig. 007
5-5