b. Cleaning, Inspection and Repair.
this assembly from the ring. Release
(1) Clean all parts with an approved
components. Remove the O-ring (20,
(2) Inspect all parts for cracks, breaks and
21) and backup rings (19, 22) from the
other damage. Repair or replace defective or damaged
pressure plates and body.
(b) Shaft end. Remove shaft key (10).
(3) Inspect fan for visible damage and
Carefully pull the hub adapter (5) from the body.
deformation. Replace a defective fan.
Remove lock ring (6) next to the shaft bearing (8) from
c. Reassembly and Installation.
the body then tap the shaft (9) and bearing assembly out.
(1) Reassemble fan and drive assembly in
If it is necessary to remove the small snap rings (7) and
reverse order of the numerical sequence illustrated on
bearing from the shaft support the bearing inner race in
an arbor press, remove snap ring and press bearing of
the shaft. Remove washer (11) and then the seal (32)
and wiper (31) from the body.
c. Cleaning, Inspection and Repair.
3-30. Hydraulic Motor, Fan Drive (Model 2385)
(1) Discard the shaft seal, wiper, 0-rings and
a. General. The carrier engine fan is mounted on,
back-up rings. Use a new seal kit for reassembly. Wash
and driven by a hydraulic motor that is thermostatically
the metal parts in a clean mineral oil solvent, blow them
dry with filtered compressed air and place on a clean
b. Removal and Disassembly.
surface for inspection.
(2) If the cartridge parts are badly worn, a new
remove the fan drive hydraulic motor.
cartridge kit should be used.
Check the wearing
surfaces of the cartridge pressure plates and ring for
(a) Cover end. Clamp the motor in a
scoring and excessive wear. Remove light score marks
vice with protective jaws, cover end up. Mark the cover
by lapping. Replace any heavily scored or badly worn
(2, fig. 3-14), and body (13) for correct relationship for
reassembly. Remove the four cover bolts (1) and lift off
(3) Inspect the vanes for burrs, wear and
the cover. Remove the cartridge assembly (23) from the
excessive play in the rotor slots. Carefully dress down
body. If the cartridge is not being replaced as an
burrs with a medium India stone. Replace the rotor if the
assembly, remove the two screws (30) and separate the
slots are worn. Replace vanes with a new vane and
pressure plates (24, 29) from the rotor (28), ring (25),
spring kit if the vane tips are rounded.
vanes and springs (27).
(4) Rotate the bearing on the shaft while
applying pressure to check for wear, looseness,
roughness and pitted or cracked races.
(5) Inspect the seal and bushing mating
surfaces on the shaft for scoring or wear. Replace the
disassembling and assembling the
shaft if marks cannot be removed by light polishing.
cartridge components. Carefully pull
(6) Be sure that any paint or burrs raised on
the rotor and vane assembly half way
the body and cover mating surfaces are removed before
out of the ring and install the ring
the vanes into the rot(or and remove