8
03524014_ed9
1800 Series Parts List (continued)
Maintenance Section
WARNING
Always use protective eyewear when performing
maintenance on a motor or operating a motor.
Always turn off the air supply and disconnect the air
supply line before installing, removing or adjusting any
accessory on this motor, or before performing
maintenance on this motor. Failure to do so could result
in injury.
Disassembly
General Instructions
1. Do not disassemble the motor any further than necessary
to replace or repair damaged parts.
2. Do not press any needle bearing from a part unless you
have a new needle bearing on hand for installation.
Needle bearings are always damaged during the removal
process.
3. When grasping a tool in a vise, always use leather-
covered or copper-covered vise jaws to protect the
surface of the part or motor and help prevent distortion.
This is particularly true of threaded members and
housing.
4. Do not remove any part which is a press fit in or on a
subassembly unless the removal of that part is necessary
for repairs or replacement.
5. When removing the Planet Gear Shafts (25 or 36),
support the motor end of the assembly and press the
Shafts out toward the motor end. The shaft holes through
the web are slightly tapered so that the Shafts have a
tighter fit in the front web.
Disassembly of the Motor
1. Unscrew and remove the Inlet Bushings (1) from the
Backhead (2).
2. Thread a piece of pipe about 6” long having an external
3/8” pipe thread into one of the inlet bushing holes. Use
the pipe to clamp the motor into a vise for disassembly
and assembly procedures.
3. Using a 3/16” hex wrench, unscrew and remove the two
Gear Case Cap Screws (31) and Lock Washers (5).
4. Separate the Gear Case (28) from the Motor Housing
(14) and set the assembled Gear Case aside.
5. Grasp the pinion of the Rotor (12) and pull the assembled
motor out of the Motor Housing (14). It may be necessary
to gently tap the face of the Motor Housing with a plastic
hammer to jar the assembly free.
6. Grasp the Cylinder (15) in one hand and using a plastic
hammer, sharply rap the spline end of the Rotor to
remove the Front End Plate (16) and Front Rotor Bearing
(18) which will free the Cylinder and Vanes (11). Remove
the Cylinder Dowel (13).
7. Jar the Front Bearing out of the Front End Plate by
bumping the End Plate on a wooden block.
8. Use a thin blade screwdriver to pry the Rotor Bearing
Retainer (7) off the hub of the Rotor and remove the Rear
Rotor Bearing (8), Rear End Plate Gasket (9A) and Rear
End Plate (9).
9. Using a 3/16” hex wrench, unscrew and remove the two
Backhead Cap Screws (4) and Lock Washers (5).
10. Remove the Backhead, Exhaust Deflector Seal (3) and
Backhead Gasket (6) from the rear of the Motor Housing.
11. Slide the Exhaust Deflector (10) off the Motor Housing.
Disassembly of the Gearing
1.
For all Models except 1801N or 1841N
, grasp the Gear
Head Gearing (22) and pull the assembled Gear Head
(20) out of the Gear Case (28). Remove the Gear Head
Spacer (26) from the spline shaft of the Gear Head.
2.
For all Models except 1801N or 1841N
, using a bearing
puller, pull the Gear Head Bearing off the rear hub of the
Gear Head.
3.
For all Models except 1801N or 1841N
, support the
short hub end of the Gear Head on the table of an arbor
press and press the Gear Head Planet Gear Shafts (25)
from the Gear Head. Make certain the Shafts are pressed
out toward the short hub because the holes in the Gear
Head are tapered smaller toward the front of the Gear
Head.
4.
For all Models except 1801N or 1841N
, remove the
Gear Head Planet Gears (23) from the Gear Head.
5.
For Models 1801P or 1841P,
remove the Rotor Pinion
(21)
32
Spindle
34 Spindle Planet Gear (3)
for Model 1801N or 1841N
for Model 1801N or 1841N
(5/8” round shaft)
R1801N-108
(21 teeth)
R1801U-10
for Model 1801P, 1801Q,
for Model 1801P, 1801Q,
1801U, 1841P, 1841Q or
1801U, 1841P, 1841Q or
1841U
1841U (17 teeth)
R1801P-10
with 5/8” round shaft
R1801P-108
for Model 1801W or 1841W
with 1/2” square shaft
R1801P-8
(19 teeth)
R1801W-9
for Model 1801W or 1841W
35
Spindle Planet Gear Bearing
with 5/8” round shaft
R1801W-108
Gear (1 for each Gear)
R1AL-654
with 5/8” square drive
R1801W-8
36
Spindle Planet Gear Shaft (3)
F02-15
33
Spindle Rear Bearing
37
Spindle Front Bearing
4UA9-593
for Model 1801N or 1841N
4E-510
38 Spindle Key
555-410
for all other models
R1AP-97
