Gardner Denver HELIFLOW 8 Series, Owner'S Manual

Page: 33 / 64

HF-7-604 Page 32
5. Ring Carrier Removal
34. Remove the piston rings from each ring carrier.
35. Pull ring carriers from both rotor shafts using ring
carrier puller (T13) and two bolts (29).
36. Inspect all piston rings for signs of damage and
abnormal wear. Rings with damage and abnormal
wear should be replaced.
37. Inspect the ring carriers for signs of damage and
abnormal wear. Normally it is not required
to replace the ring carriers.
6. Rotor Removal
38. Match mark the rotors (2) by making small
punch marks on the end of meshing lobes.
39. Insert eye bolt (T31) into the drive rotor shaft.
Connect chain to overhead hoist. Center the hoist
over rotor to allow rotor to be removed smoothly
without swinging. Slowly raise and remove the
rotor.
40. Repeat Step 39 for idler rotor.
41. Rotate assembly so gear end is up. Remove two
screws (31) and remove bearing housing.
42. Inspect Rotors.
43. Inspect the inserts in the four bearing bosses (two
in each bearing housing) for the sign of damage
and abnormal wear. Normally is not required to
replace the inserts. If any insert is damaged it may
be removed. Support the external surface of the
bearing housing near the insert with blocks of wood
with the oil side facing up. Drive the insert out with
hydraulic press and insert extraction tool (T30).
Inserts must be removed from oil side of the
bearing housing.