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8. Remove the Vanes (16) from the Rotor (15).
9. Grasp the Rotor in copper–covered or leather–covered
vise jaws with the Arbor upward. Using a 5/32"
diameter rod through the crosshole, unscrew and
remove the Arbor.
Steps common to ALL HX models
1. Use a screwdriver to remove the Arbor Housing Plug
(41) and rotate the Arbor (39) until the crosshole in
the Arbor is aligned with the opening in the Arbor
Housing (40).
2. Insert a 5/32" (4 mm) diameter hardened steel rod
approximately 6" (150 mm) long through the arbor
crosshole to sprag the Arbor.
For models ending in H63 or H64
Using a spanner wrench on the Wheel Adapter (54),
unscrew and remove the Adapter. Remove the Front
Seal Cup Assembly (48) from the Adapter.
For models ending in G4
Using the Collet Body Wrench (47A) on the Collet
Body (45), unscrew and remove the Collet Body.
Remove the Front Seal Cup Assembly (44) from the
Collet Body.
3. Grasp the tool in copper–covered or leather–covered
vise jaws with the spindle upward and using a 1–1/2"
wrench, unscrew and remove the Arbor Housing. This
is a left–hand thread and must be rotated clockwise.
4. Remove the Clamp Sleeve (35), Arbor Coupling (34)
and the Flange Clamp (23).
5. Grasping the Arbor Bearing Nut (36), pull the Arbor
out of the Arbor Housing.
6. Using snap ring pliers, remove the Arbor Bearing
Retaining Ring (43) from the Arbor Housing.
7. For models ending in G4, remove the Arbor Bearing
Shield (42A).
8. Stand the Arbor Housing, threaded end upward, on
the table of an arbor press and using a rod or piece of
tubing that contacts the outer ring of the bearing,
press the Front Arbor Bearing (42) from the Arbor
Housing.
9. Insert a 5/32" (4 mm) diameter hardened steel rod
approximately 6" (150 mm) long through the
crosshole in the Arbor and using a 1/2" wrench on the
Arbor Bearing Nut, unscrew and remove the Nut.
10. Using an arbor press, press the Rear Arbor Bearing
(38) off the Arbor.
11. Pull the Flange (22) and Flow Ring (21) off the front
of the Motor Housing (5).
12. Grasp the Arbor Bearing Nut on the rotor shaft and
pull the assembled motor out of the Motor Housing
(8). Remove the Motor Housing from the vise and
remove the two Rear Rotor Bearing Spacers (13) from
the bottom of the Housing.
MAINTENANCE SECTION
13. Remove the Vanes (16) from the Rotor (15).
14. Grasp the Rotor in copper–covered or leather–covered
Steps common to ALL models
1. If the Front Rotor Bearing (20) must be replaced,
2. If the Rear Rotor Bearing (12) must be replaced, use
3. Using a bearing puller, pull the Rear Rotor Bearing
Disassembly of the Inlet and Throttle
1. Using a 6 point 15/16" socket, unscrew and remove
2. Remove the Inlet Seal (3) and Inlet Screen (2) from
3. Remove the Throttle Valve Spring Seat (4), Throttle
4. If the Throttle Valve Seat (7) must be replaced, insert
5. Press the Throttle Lever Pin (10) from the Housing
General Instructions
1. Always press on the inner ring of a ball–type bearing
2. Always press on the outer ring of a ball–type bearing
3. Whenever grasping a tool or part in a vise, always use
4. Except for bearings, always clean every part and wipe
5. Check every bearing for roughness. If an open bearing
6. Apply a film of o–ring lubricant to every o–ring
23
vise jaws with the Arbor Bearing Nut upward. Using a
1/2" wrench, unscrew and remove the Arbor Bearing
Nut.
support the Front End Plate (17) between two blocks
on the table of an arbor press. Place the blocks as
close to the body of the Rotor (15) as possible and
press the Rotor from the Bearing and End Plate.
Remove the Front End Plate Spacer (18) and Front
Seal Cup Assembly (19) from the hub of the Rotor.
snap ring pliers to remove the Rear Rotor Bearing
Retainer (14).
off the hub of the Rotor.
the Inlet Assembly (1).
the Inlet.
Valve Spring (5) and Throttle Valve (6) from the rear
of the Motor Housing (8).
a hooked tool through the central opening of the Seat
and pull it out of the Housing by hooking the
underside of the Seat.
and remove the Throttle Lever (9). Remove the
Throttle Valve Plunger (11).
ASSEMBLY
when installing the bearing on a shaft.
when pressing the bearing into a bearing recess.
leather–covered or copper–covered vise jaws. Take
extra care not to damage threads or distort housings.
every part with a thin film of oil before installation.
must be cleaned, wash it thoroughly in clean solvent
and dry with a clean cloth. Sealed or shielded
bearings should not be cleaned. Work grease into
every open bearing before installation.
before installation.
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