Swing Reducer
MAINTENANCE CHECK
On a WEEKLY basis, check the swing reducer oil level. See section 4 for the type of oil
recommended.
DISASSEMBLY
1. Remove the upper cover along with the brakes and motor. Examine the ring gear
bolted to the cover and the seal located in brake housing.
2. Lift out the upper planet carrier and examine gears, roller bearings, and bronze thrust
bushings for wear. Replace if necessary
3. Replace the thrust bushing located between the planet carriers if necessary.
4. Examine lower planet carrier gears, roller bearings, and bronze thrust bushings for
wear. Replace if necessary.
5. Examine thrust bushings located between input gear and lower planet drive gear.
Replace if necessary.
6. The lower planet carrier is splines to the output shaft. Remove the cap and shims to
disassemble the carrier, shaft, and lower case. Place shims aside for use in
reassembly. Examine the roller bearings and lower seal. Replace if necessary.
7. The only adjustment necessary is to shim below the shaft retainer cap for proper
bearing adjustment. Use the original shims (see step 6)
REASSEMBLY
After shimming as required, reassemble the unit by reversing the steps in the disassembly
sequence.
Refer to Section 4 for quantity and type of lubricant.
BRAKE
Remove the motor and upper cover of brake housing to inspect or replace brake discs.
T300-1_T500-1_T780
Service / Parts
474 P/N 12261-683
REVISED: January 2015
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