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PM-000150-C Kopenn Auger Drive Service and Repair Manual - March 2018
In all the drive units there are primary and secondary individual gear sets.
UNIT DISASSEMBLY PROCEDURE
All parts should be inspected as they are removed from unit. Scribe or mark a line across the assembly mounting case, ring gear, and cover joints on
outside of gearbox to assure proper orientation of hood assembly, oil fill/ drain plug, motor mounting, etc., as the unit is reassembled.
1. Remove outer ring of bolts (refer to the relevant drive unit- diagram) from underside of gearbox assembly. Lift hood from gearbox assembly.
Remove drain plug and drain oil.
2. Remove hydraulic motor from gearbox assembly. On PD12HD-21 and PD22-20 and above remove 4 motor retaining bolts to remove motor then
inner ring of input housing retaining bolts.
3. The primary planetary assembly is now ready for removal. Lift outer ring gear, sun gear and gear set from the output housing.
4. For secondary planet removal, remove bolts holding interim housing, remove housing, and lift outer ring gear, sun gear and gear set from the
output housing.
5. All drive units will have a seal protector or carrier, remove this before moving to step #6.
6. Remove key steel from keyway. Loosen lock nut using the required tool and remove locknut and locking tab.
7. With output shaft down through a centre hole in hydraulic press table and unit supported by case, press shaft out by applying load to top end of
shaft (internal end) until it passes through inner shaft bearing. Outer shaft bearing will come out of unit attached to shaft.
The unit is now disassembled into groups of parts and/or subassemblies. The area requiring repair or service should be identified by thorough
inspection of the parts after they have been washed in solvent.
BEFORE DISASSEMBLY
CAUTION:
RETAINING RING IS NO LONGER RETAINING OUTPUT SHAFT. TAKE PRECAUTIONS IF THE UNIT IS MOVED
BECAUSE THE SHAFT MAY FALL OUT.
CAUTION:
CARE SHOULD BE TAKEN NOT TO INJURE FEET OR DAMAGE OUTPUT SHAFT DURING THIS PROCEDURE.
