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PDI 5-30 Service and Repair Manual - January 2012 - PM-000086
BEFORE DISASSEMBLY
IN THE PDI 5 – PDI 7 SERIES, THERE IS ONE SINGLE PRIMARY PLANETARY GEAR SET. IN THE PDI 9 – PDI 30 SERIES 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.
Remove outer ring of bolts (refer to the relevant drive unit- diagram) from underside of gearbox assembly.
1.
For PDI 5 – 7 - Remove inner ring of bolts and nyloc nuts (Refer to the relevant drive unit- diagram) remove hydraulic motor from gearbox
2.
assembly. On PDI 9 - 30 remove 8 motor retaining bolts to remove motor.
The primary planetary assembly is now ready for removal. Lift outer ring gear, sun gear and gear set from the output housing.
3.
For secondary planet removal, remove bolts holding interim housing, some series will also have spring pins locating the interim housing, remove
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these also. Then remove housing, lift outer ring gear, sun gear and gear set from the output housing.
Remove output shaft seal protector or carrier from bottom of housing.
5.
Move lock nut to free key steel and remove key steel from keyway. Undo locknut and remove.
6.
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
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shaft (internal end) until it passes through inner shaft bearing. Outer shaft bearing may 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.
NOTE:
ON THE PDI 13 – 16 THERE ARE 2 SOCKET HEAD BOLTS IN THE SAME PCD AS THE HOOD BOLTS AND ON THE PDI
20 – 30 THERE ARE 3 SOCKET HEAD BOLTS IN THE SAME PCD AS THE HOOD BOLTS (REFER TO THE RELEVANT DRIVE
UNIT- DIAGRAM). DO NOT UNDO THESE BOLTS AS THEY HOLD THE DRIVE UNIT TOGETHER WHEN THE HOOD BOLTS ARE
REMOVED. LIFT HOOD FROM GEARBOX ASSEMBLY. REMOVE DRAIN PLUG AND DRAIN OIL.
CAUTION:
OUTPUT SHAFT IS NO LONGER RETAINED. 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.
