MBW F36/4 - Spider Bushing Removal; Power Pitch Actuator Replacement; Spider Bushing Replacement; Parts Replacement Cycles and Tolerances

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3. Slowly loosen clutch cover, counter clockwise and
remove (Warning: Cover under light spring tension)
4. Locate springs under cover and replace with spring
kit (MBW #20859).
5. Reassemble clutch and mount to trowel.
Spider Bushing Removal
Refer to Figure #5
1. Screw 3/4-14 pipe tap half way into outer bushing.
2. Insert push rod into opposite side of spider.
3. Use a tube on upper end to press old bushings out.
4. Repeat with inner bushings.
Power Pitch Actuator Replacement
Refer to Power Pitch Actuator & Wiring, page 30.
1. If possible, extend actuator. If unable, elevate trowel
off blades and support from guard ring to relieve
pressure on blade tilt mechanism.
2. Disconnect wiring to actuator.
3. Remove machine screw (13) securing pin (3) at top of
actuator. Use screw to remove pull-pin.
4. Remove machine screw (13) at bottom of actuator
and pull-pin (3).
5. Swivel lower end of actuator away from mount, then
pull down and out from guard (6).
6. Plug in new actuator wiring and extend fully.
7. Insert rod (upper) end of actuator into guard, then
lower end of actuator into socket in the lower actuator
mount(4). Align lower holes and insert pull-pin to
secure.
8. Secure lower pull pin with washer (9) and screw (13).
9. Align holes in upper end of actuator and top mounting
bracket (7). If needed, elevate trowel and pitch
blades manually. Insert pull-pin (3) and secure with
washer (9) and screw (13).
10. Refer to maintenance section of this manual to adjust
actuator for maximum pitch.
Spider Bushing Replacement
Refer to Figure #6 for bushing installation:
1. Install inner bushings into spider with long side of
installation tool #60703 to ensure proper depth.
2. Using the opposite end or short end of installation tool
#06703, install (4) outer bushings into spider.
Parts Replacement Cycles and Tolerances
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Figure 8
Air Cleaner Element
Replace after 100 hours if the engine is operating under good clean air conditions.
Service and replace more frequently if under more severe conditions.
Bearings
Replace anytime bearing is rough, binding, discolored or removed from housing or
shaft.
Blades Replace when the edges become sharp or uneven. (Finish blades can be reversed)