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MOTOR DISASSEMBLY & REASSEMBLY
1.
Mark motor prior to disassembly at each section joint as
shown in the diagram. These marks will serve as guides to
reassemble motor components in original positions.
2.
Remove 4 motor assembly bolts. Motors with socket head
cap screws require a 9.5 mm
or 3/8” hex wrench. Motors
with hex head cap screws require a 17mm socket.
3.
Take motor apart as shown in diagram below.
Important:
Remember orientation and location of all parts.
Lay parts on a clean cloth in proper orientation during
disassembly.
marking lines
cover
body
flange
idler shaft
rear bushing
drive shaft
front bushing
4. Replace seals, O-rings, and components as needed.
5.
Reassemble cover, shafts, bushings, and body in their original positions. Use alignment pins
and marked lines for reference.
Note:
All components must be reinstalled exactly as they were for proper motor function.
6.
Set assembly on back cover with shaft pointing up.
7. Go to step 4 on the previous page for instructions on replacing shaft seal and completing
reassembly.
HYDRAULIC MOTOR SEALS
Hydraulic seal failures are typically caused by high continuous pressure or pressure spikes in the
return line. The motor seal is rated for 250 PSI(17.2 bar). Maintaining return line pressures below
100 PSI(6.9 bar) will extend motor seal life. Minimize back pressures in the return line by plumbing
an unobstructed return back to the hydraulic reservoir or motor return port. Avoid returning the oil
through remote valves, couplers, and long undersized hoses. Consult your tractor dealer for low
pressure return options.
Do not install any hydraulic components in series on the return line of the motor.
