HY13-1526-001-M1/US
Torqmotor™ Service Procedure
TC, TS, TB, TE and TJ Series
Parker Hannifin Corporation
Hydraulic Pump/Motor Division
Greeneville, TN 37745 US
29
Remove end
cover &
inspect bolts
NOTE
Remove plugs
and valves
4. Remove end cover assembly (2). SEE FIG-
URE 10. After July 2012, motors no longer
have section seal ring located in the end
cover (2).
NOTE: Refer to the appropriate “alternate
cover construction” on the exploded view
to determine the end cover construction
being serviced.
5. If the end cover (2) is equipped with shuttle
valve or relief valve (22,24) components,
remove the two previously loosened plugs
(21,23). SEE FIGURE 11.
CAUTION
NOTE
NOTE
CAUTION: Be ready to catch the shuttle
valve or relief valve components that
will fall out of the end cover valve cavity
when the plugs are removed.
NOTE: O-ring (20) is not included in seal
kits but serviced separately if required.
NOTE: The orifice plug in the end cover
(2) must not be removed as they are ser-
viced as an integral part of the end cover.
Wash & inspect
end cover
NOTE
6. Thoroughly wash end cover (2) in proper
solvent and blow dry. Be sure the end cover
valve apertures, including the internal orifice
plug, are free of contamination. Inspect end
cover for cracks and the bolt head recesses
for good bolt head sealing surfaces.
Replace end cover as necessary.
NOTE: A polished pattern (not scratches)
on the cover from rotation of the commu-
tator (5) is normal. Discoloration would
indicate excess fluid temperature, ther-
mal shock, or excess speed and require
system investigation for cause and close
inspection of end cover, commutator,
manifold, and rotor set.
Remove
& inspect
commutator
ring
7. Remove commutator ring seal (3) and discard.
SEE FIGURE 12. Remove commutator ring (5).
Inspect commutator ring for cracks, or burrs.
SEE FIGURE 13.
Figure 13
Figure 12
Figure 11
Figure 10
Disassembly and Inspection