Major Repairs; Changing The Valve And Bearing Plate Disassembly - Sauer Danfoss 20 Series Service Manual

MAJOR REPAIRS

CAUTION!
Major repairs may affect
the unit warranty,
therefore equipment
manufacturer should be
consulted prior to
undertaking such repairs.
22
Series 20 – Axial Piston Motors
Service Manual and Repair Instructions
Disassembly and Assembly
Changing the valve and bearing plate (disassembly)
The end cap crews should not be loosened until the shaft seal has been removed
(see page 17). Remove the valve manifold assembly as outlined under minor repair
procedures (see page 19).
10 8, 9
16
Remove the bronze bearing plate and pilot ring from the cylinder block. If the pilot ring
remains with the bearing plate, remove it at this time.
DKMH.PS.330.C1.02 520L0534
7, 9
Remove all but two (2) of the hex. screws
holding the end cap to the housing.
There is an internal spring loading on the
end cap and as the last two (2) screws
are loosened, it should begin to separate
from the housing. Loosen these screws
alternately until the end cap has fully
separated from the housing, then remove
the screws entirely.
15 10
F000 132
The end cap can now be lifted off
the motor; however, be certain that the
valve plate does not fall and become
damaged. If the valve plate tends to lift
off with the end cap, hold it in place
on the end cap and remove both parts
together. If the valve plate remains on the
bearing plate, remove it at this time.
All surfaces must be treated with the
greatest care. Any damage to the
surfaces must be avoided at all costs.
F000 133
16 32
F000 138