Gardner Denver HELIFLOW 8 Series, Owner'S Manual

Page: 32 / 64

HF-7-604 Page 31
4. Bearing Housing, Bearings and Oil Slinger Removal
NOTICE
Bearings and internal oil slinger should be replaced during overhaul as a matter of service policy.
Exercise care not to damage the bearing bores on the bearing housing when removing bearings and oil
seals.
19. Mount Blower on trunnion with gear end up.
20. Remove seven bearing retaining screws (14),
washers (15) and two bearing retaining plates (13).
21. Remove two bolts (31) attaching the gear end bearing
housing to the cylinder.
22. Secure disassembly fi xture (T11) on the gear end
bearing housing with seven bolts (T9) using the
same holes as the bearing retainer plates.
23. Attach overhead hoist to disassembly fi xture using the eye
bolt (T31).
24. Place a hydraulic cylinder (T28) and spacer (T24)
on top of each rotor shaft to press against
fi xture
as shown. Apply pressure evenly to each hydraulic
cylinder (T28) until the bearing housing is released.-
25. Remove hydraulic cylinder (T28) and spacer (T24). Lift
bearing housing o
ff
cylinder using the overhead
26. Pull bearings from housing with hands.
27. Drive the oil slinger (9) out of the bearing housing with small hammer and punch. Discard the oil slingers as they
will not be reused.
28. Proceed to page-32 to remove piston rings and ring carriers. Return to step 29 below when fi nished removing
piston rings and ring carriers on the gear end.
29. Reinstall gear end bearing housing to cylinder with two long bolts (31) and rotate assembly so the
drive
end
is up.
30. Remove the locknuts (23), oil slingers (21) and spacers (19) from the drive end rotor shafts using the nut driver
tool (T12). (See page-46 illustration).
31. Remove the two bolts (31) attaching the drive end bearing housing to the cylinder.
32. Repeat steps 22 through 27 for drive end.
33. Reinstall drive end bearing housing with two long bolts (31) and rotate assembly so the gear end is up. Proceed
to step 38.