16573321_ed3
5
d. Thread the Cone Wheel Adapter or Collet Body onto the Arbor
and tighten it between 14 and 19 ft-lb (19 and 26 Nm) torque.
e. Apply 1 cc of Ingersoll Rand No. 68 Grease to the inside
surfaces of the Arbor Coupling (39) and install the Coupling
on the Bearing Nut at the motor end of the Arbor.
f. Insert the assembled Arbor, Coupling end first, into the Arbor
Housing making certain the Coupling engages the Bearing
Nut on the Rotor.
NOTICE
The Wheel End Bearing Cap has left-hand threads.
g. Thread the Wheel End Bearing Cap into the Arbor Housing
and tighten it between 40 and 50 ft-lb (54 and 68 Nm) torque.
h. If the Oil Chamber Plug (3) was removed and the oil drained,
fill the oil chamber with Ingersoll Rand No. 50 Oil and tighten
the Plug between 3.5 and 6 ft-lb (5 and 8 Nm) torque.
i. For Models 61H120G4 and 61H150G4, install the Collet (55),
Collet Nut (56) and a burr.
j. For Models 61H120L6 and 61H150L6, install a cone wheel.
Inspecting and Resetting the Controller
Over a period of time, wear on the valve face of the Controller
Assembly (17) or on the nozzle face in the Throttle Handle
Assembly (1) could cause the Controller to lock the Grinder in an
inoperable condition. The cause of the locked condition must
be corrected before the Grinder can be operated. To correct the
condition, proceed as follows:
1. Using a 5/64” hex wrench, unscrew and remove the two Rear End
Plate Retaining Screws (12).
2. Using a wrench on the flats of the Arbor Housing (33) and
another on the flats of the Throttle Handle Assembly (1), unscrew
and remove the Arbor Housing. Pull the assembled motor out
of the Arbor Housing. Remove the two Motor Clamp Washers
(30) from the front of the motor or from the inside of the Arbor
Housing.
3. Clamp the Bearing Nut Assembly (31) at the front of the motor in
a vise with the Controller Assembly upward.
4. Using the Controller Wrench (57) on the flats of the Controller
Assembly, unscrew and remove the Controller Assembly.
5. Pull the Rear End Plate Assembly (18) and Rear Rotor Bearing
Washer (20) off the Controller.
6. The Controller is in the locked position if the lockout gap shown in
Dwg. TPD1085 exists and the “A” dimension measures 2.00”
(50.8 mm).
Normal Position
Lockout Position
Pull
PULL
Shallow,
small Hole
Lockout Gap
“A”
“B”
Controller
Valve Face
(Dwg. TPD1085)
To reset the Controller, proceed as follows:
One of the flats on the metal ring has a shallow, small hole in
the center of the flat. Position that flat upward and grasp the
brass wiper plate and the nose cone section of the Controller
with your hands.
a.
While pulling the wiper plate away from the nose cone
section, lightly rap the entire Assembly on a workbench
surface. Repeat this process until the nose cone section goes
flush against the ring when the wiper plate and nose cone
are released.
7. After resetting the Controller, and using verniers or a micrometer,
measure the length of the Controller from the end of the shaft to
the end of the nose cone. If the “B” dimension in Dwg. TPD1085
measures less than 1.896” (48.16 mm), replace the Controller
Assembly.
8. To determine if the nozzle face in the Throttle Handle is worn, a
measurement must be taken from the nozzle face to the shoulder
where the brass wiper plate seats. (Refer to Dwg. TPD1084). If
the “C” dimension is greater than 1.365” (34.67 mm), replace the
Throttle Handle.
Nozzle Face
“C”
(Dwg. TPD1084)
NOTICE
There are a number of ways to obtain the “C” dimension in
Dwg. TPD1084. One method is to make a steel plug
having a 1.594” (40.5 mm) diameter, a 1/2” (13 mm) hole
through the center and both ends surface-ground parallel
to a 1.25” (31.75 mm) length. Insert the plug into the Throttle
Handle and using a depth micrometer, measure through the
plug to the nozzle face. Subtract the length of the plug from
the measured length to determine the “C” dimension.
9. Install the Rear Rotor Bearing Washer into the counterbore of the
Rear End Plate Assembly.
10. Insert the Controller Assembly, bearing end leading, into the rear
end plate counterbore against the Bearing Washer. Make certain
the Wiper Plate Alignment Pin (19) enters the slot in the brass
wiper plate of the Controller Assembly.
11. With the Rear End Plate Assembly leading, thread the Controller
Assembly onto the shaft of the Rotor (23). Make certain the
Cylinder Dowel Pin (22) enters the notch in the End Plate.
12. Using the Controller Wrench, tighten the Controller Assembly
between 8 and 10 ft-lb (10.5 and 13.5 Nm) torque.
13. Drop the two Motor Clamp Washers, concave side trailing, into
the large end of the Arbor Housing.
14. Remove the assembled motor from the vise and insert it,
Controller Assembly trailing, into the Arbor Housing. Make certain
the Bearing Nut Assembly at the front of the motor engages the
Arbor Coupling (39).
b.
Summary of Contents for 61H Series
Page 7: ...Notes...
