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MAINTENANCE
Maintenance Section 5-3
© 2005 Alamo Group Inc.
GRIZZLY 66 01/05
- Using a large pair of snap ring pliers, remove retaining ring from the bottom of the housing.
- Remove bottom cover from housing.
- Wash all parts in solvent and inspect carefully for damage or excessive wear. Magnaflux the shaft while
disassembled.
- When ordering replacement parts, refer to Parts Section for correct part numbers and ensure that all parts
are genuine Alamo parts. DO NOT use substitutes.
Assembly
- As a general rule, always use new oil seal, lockwashers and lockwire when re-assembling.
- Pack the bearing with grease.
- Press the lower bearing onto the shaft, then press the shaft and bearing into the bearing housing from the
bottom.
- Press the upper bearing into the housing and onto the shaft.
- Press the oil seal into the lower cover, apply gasket compound to the cover and secure in place with the
retaining ring.
- Position the lockwasher and then tighten the locknut on the shaft.
- Pump six to eight shots of grease into each bearing while rotating the shaft.
- Install spacer.
- Place the shaft and housing assembly into the frame and bolt in place.
- Install motor plate and wire bolts.
- Install BIKON lock assembly flush with end of hub and install the whole coupling assembly flush with the
end of the shaft.
- Install disc.
- Install motor.
- Connect all hydraulic lines and bleed the system. Check manually for free rotation of the shaft and disc.
Make sure all fastenings are securely wired or pinned.
SERIES II MODEL
Disassembly
- Discount and plug the hydraulic lines. Plug the hydraulic connections on the motor.
- Undo bolts and remove cutting tool (flail arm, flail disc, or mulching disc).
- Undo bolts on motor remove motor.
- Undo bolts on clamp hub and remove. Keep round keys with the hub.
- Undo bolts attaching motor mount plate and remove with dowels attached.
(If Quick Flex)
- Remove QM 'Quick-Flex' Coupling Assembly by first sliding the splined hub off the insert. Second, remove
the lower snap ring that retains the cover. Third, slide the insert off the lower hub. Finally, loosen the screws
holding the taper-lock bushing onto the shaft, this will allow the lower hub to slide off the shaft.
- Undo the bearing housing bolts and remove the bearing housing assembly from the frame.
- Undo locknut and lockwasher then remove.
- Undo bolts and remove upper cover.