Digga Magnum II Series, Operator And Parts Manual

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37
I
K
WARNING! BEFORE PERFORMING MAINTENANCE OR SERVICE, LOWER THE
ATTACHMENTTO THE GROUND, DISENGAGE AUXILIARY HYDRAULICS, TURN
OFF THE ENGINE, REMOVE THE KEY AND APPLY THE BRAKES.
WARNING! NEVER PERFORM ANY WORK ON THIS ATTACHMENT UNLESS YOU ARE
AUTHORIZED AND QUALIFIED TO DO SO. ALWAYS READ THE OPERATOR’S
MANUAL BEFORE ANY REPAIR IS MADE. AFTER COMPLETING MAINTENANCE
OR SERVICE, CHECK FOR CORRECT FUNCTIONING OF THE ATTACHMENT. IF
NOT FUNCTIONING PROPERLY, ALWAYS TAG “DO NOT OPERATE” UNTIL ALL
PROBLEMS ARE CORRECTED.
REPLACING AND/OR SERVICING THE LOWER BEARINGS
An overhead hoist and the optional bearing socket assembly #116125 is recommended when servicing
the lower bearing assemblies.
1. Remove the drive belt. (Right side bearing only.) See “DRIVE
BELT TENSIONING AND/OR REMOVAL”
2. Remove the lower sprocket on rotor shaft. (Right side bearing
only.) See “SPROCKET REMOVAL AND INSTALLATION”.
3. Disconnect grease line (A) and relief line (B). (Right side bearing
only.) (Push gray extrusions on straight connector’s (C) inward
while pulling hose lines outward.) Plug or cap fittings and hosesto
prevent contaminants from entering the lubrication system.
4. Remove the four socket head cap screws (D) and the outer seal
cap (E). (You may have to install two of the socket head cap
screws into the push off holes (F) to remove the outer seal cap.)
RIGHT LOWER BEARING
ASSEMBLY
C
B
A
E
F
C
D
LOCKING TAB - BENT OUT
5. Clean any visible grease from the lower bearing assembly. H
6. Remove the bearing lock nut (G) and bearing lock washer (H).
G
NOTE:
Be sure the rotor is properly supported before lower bearing removal. The locking tab must be
bent out of the bearing lock nut (G) prior to removal of the nut. Failure to bend out the locking tab can
result in damaging the locking washer (H).
7. It is recommended to use the bearing lock nut provided in the
bearing socket assembly #116125 to remove the withdrawal
sleeve (I) which is locking the bearing (J) to the rotor shaft.
Install the bearing lock nut (K) with the chamfer side of the lock
nut towards the bearing to prevent damage. Tighten the lock
nut (K) onto the withdrawal sleeve
(I)
Using the bearing socket and a .75” drive ratchet or breaker
bar to “pull” the withdrawal sleeve out of the bearing inner
race. Do not completely remove the withdrawal sleeve from the
bearing.
J
MAINTENANCE & SERVICE
QUALIFIED TECHNICIAN MAINTENANCE
PM-000102-A OCTOBER 2017 36