Filter
Top Products
MAINTENANCE
Maintenance Section 5-2
© 2005 Alamo Group Inc.
GRIZZLY 66 01/05
General Maintenance
The importance of regular maintenance and inspection as a means of prolonging the life and maintaining the
efficiency of the Grizzly cannot be overemphasized.
For lubrication use Shell EP2 grease or equal. The bearings are packing during assembly. Each bearings should
be given one 'shot' of grease with a hand gun each day (8 hour shift) before starting up. DO NOT OVER GREASE.
A hot bearing housing usually indicates overgreasing.
Cutter bits may become damaged due to rock impact. It is not necessary to throw away a cutter bit if the carbide
insert is lost. These cutters may be built up with hard surface rod. The cutter must be preheated to 300 degrees
F. Build up with hard surface rod (e.g. Artec Ecoface 60) and post heat then cool slowly. The disc is balanced at
the time of manufacturing. Cutter bits must be of equal weight. If cutter bits are hard surfaced, they must be
weighed. All outer rim bits must be of equal weight to insure balanced operation.
Blades may be sharpened as necessary. It is imperative, however, that the weight of each blade in a pair be the
same. Maximum variation in weight must not exceed 2 oz. After sharpening, file any burrs from the blades and
flail arm. Clean the blade bolt and check the fit to the bushing in the flail arm. Replace the bushing when 50% of
the thickness is worn away. Replace the bolt when the shoulder diameter is 2" in any direction or the pin diameter
reaches 1-1/8" minimum. Replace the blade when the hole reaches 2-1/2" diameter in any direction. Lightly oil
the bolt and bushing before re-assembling. Use new cotter pins in the slotted nuts.
WARNING! The cutter bits, blades, and flail arms, are constructed of specially treated steel of specific
composition to withstand the stresses of operation on the Grizzly. Replace only with genuine Alamo
parts. Do not repair except as noted in paragraph 3.
CAUTION! Many other parts on the Grizzly are of special construction, treatment or composition. These items,
which are clearly indicated on the Parts List, must always be replaced by genuine Alamo parts.
Other items may be replaced from local suppliers provided they are of equal quality and
specification.
At some point in time the bearing will wear out sufficiently to require replacing. Since thise will only occur after
many hours of use it will be appropriate to carefully inspect the shaft, arm, and/or disc for stress damage at that
time while the Grizzly is disassembled. If at all possible have these parts magna-fluxed. If doubtful concerning
either the condition or procedure, contact Alamo or their authorized representative.
Disassembly
- Disconnect and plug the hydraulic lines. Plug the hydraulic connection on the motor.
- Undo the bolts and nuts and remove the disc.
- Undo bolts on motor and remove the motor.
- Undo bolts on motor plate and remove plate.
- Undo bolts on BIKON lock assembly and use bolts to remove lock.
- Undo housing bolts and remove housing.
- Undo locknut and lockwasher and remove.
- Remove shaft from housing.
- Remove bearing from housing.