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3
Disassembly
General Instructions
1. Do not disassemble the tool any further than necessary to replace
or repair damaged parts.
2. When grasping a tool or part in a vise, always use leather–covered
or copper–covered vise jaws to protect the surface of the part
and help prevent distortion. This is particularly true of threaded
members and housings.
3. Do not remove any part which is a press fi t in or on an assembly
unless the removal of that part is necessary for repairs or
replacement.
Disassembly of the Angle Head
1. Grasp the tool in the copper-covered or leather-covered vise jaws
with the Angle Housing (69) upward.
2. Using a hex wrench, remove the four Angle Housing Mounting
Screw (89) and Lock washer (90). Lift the assembled Angle
Housing off the Motor Housing (1). Remove the Housing Gasket
(78) and Angle Housing Spacer (72).
3. Unscrew and remove the Bearing Cap Retainer Screw (74).
4. Using the spanner wrench, unscrew and remove the Pinion
Bearing Cap (73).
5. Pull the two Pinion Bearings (75), any Pinion Bearing Shims (76)
and Bevel Pinion (77) out of the Angle Housing.
6. Unscrew and remove the Spindle Cap Retaining Screw (86).
7. Unscrew and remove the Spindle Cap (85) and pull the Spindle
(81), Spindle Shaft (79) and any Spindle Shims (80 or 84) that are
in the assembly.
Disassembly of the Impulse Mechanism
1. Lift the assembled mechanism off the Rotor (22).
2. Using a wrench, rotate the Torque Adjustment Screw (33
or 57) clockwise untill the Screw stops. Rotate the Screw
counterclockwise untill it stops or makes six complete
revolutions.
3. Using a 2.5 mm hex wrench, unscrew and remove the
Oil Plug (59 or 63). Remove the Oil Plug Seal (60 or 64) and
Oil Plug Seal Support (61).
4. With the oil plug opening downward over a container, rotate the
Drive Shaft (48) to purge teh fl uid from the mechanism.
5. Grasp the fl ats of the Housing (31 or 32) in vise jaws with the
output end of the Drive Shaft downward.
6. Insert the pins of the spanner plug from the No. 180PQ–99 or No.
700A-99 Tool Kit into the two holes in the Housing Cap (35). Using
a wrench on the plug, unscrew and remove the Housing Cap
from the Housing Assembly.
Refer to Dwg. TPD1295.
Spanner
Plug
Counterclockwise
to Loosen
(Dwg. TPD1295)
7. Stand the disassembly arbor from the Tool Kit, large end
downward, on a workbench or the table of an arbor press. Insert
the output end of the Drive Shaft into the central opening and
either tap the Housing downward off the components or use the
pressing sleeve in the Kit to press the Housing downward off the
components.
Refer to Dwg. TPD1296.
Pressing
Sleeve
Housing
Tap edge lightly with
brass hammer or use
pressing sleeve from
tool kit
Disassembly Arbor
from tool kit
(Dwg. TPD1296)
8. Disassemble the components of the mechanism in the sequence
shown in Drawing TPB960.
Disassembly of the Motor
1. Grasp the Motor Housing (1) in vise jaws with the shaft of the
Rotor (22) upward.
2. Insert the pins of the end plate spacer spanner into the holes in
the Front End Plate Spacer (27). Using a wrench, unscrew and
remove the Spacer. This is a left–hand thread; rotate the wrench
clockwise to remove the Spacer.
Refer to Dwg. TPD1297.
End Plate
Spacer Sapnner
Clockwise to Loosen
(Dwg. TPD1297)
3. Pull the assembled motor from the Motor Housing.
4. Remove the Front End Plate (24), Front Rotor Bearing (26),
Cylinder Assembly (20) and Vanes (23) from the Rotor.
5. On the table of an arbor press, support the Rear End Plate (18)
with blocks as close to the Rotor as possible and press the Rotor
out of the Rear End Plate and Rear Rotor Bearing (19).
NOTICE
Do not enlarge or damage the shaft hole in the End Plate.
6. To remove the Rear Rotor Bearing from the Rear End Plate, use a
small drift or pin punch through the central opening of the Rear
End Plate to tap the Bearing out of the End Plate.
Refer to Dwg. TPD1299.