Ingersoll-Rand 99V Series, Maintenance Information

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NOTICE
The Rotor should slip fit over the Arbor. If tightness is detected,
lightly polish one long side of the Key using fine emery cloth
on a hard, flat surface. Replace the Key with the polished side
toward the Arbor.
4. The Rotor is counter-bored on one end. Place that end over the
Arbor. Apply a light film of
Ingersoll Rand
No. 50 Oil to each
Vane (35) and insert one vane, straight end out, into each slot in
the Rotor. If any new Vanes are required, replace the entire set.
5. Place the Cylinder Assembly (36) over the Rotor matching the End
Plate Dowel (short dowel) (37) to the alignment hole in the Front
End Plate (31).
NOTICE
If the Controller Assembly (42) needs to be replaced, you must
also replace the Rotor Bearing Seal Assembly (43) which consists
of the Rear Rotor Bearing and Rotor Bearing Seal. If either the
Rear Rotor Bearing or Rotor Bearing Seal needs to be replaced,
both must be replaced with a new Bearing and Seal. Do not mix
old and new parts.
6. Clean the Rotor Bearing Seal (43) and measure the outside
diameter and large inside diameter. If the outside diameter is
worn to 1.1764” (29.88/mm) or smaller, and/or the large inside
diameter is worn to 0.9103: (23.122 mm) or larger, install a new
Rotor Bearing Seal.
NOTICE
Take all measurements 90 degrees to the left of the dowel hole
when facing the hub side of the Seal.
7. Align the Rear End Plate (40), cavity and pin up, with the larger
hole in the Rotor Bearing Seal.
8. Press the Rear Rotor Bearing onto the Controller Assembly (42).
Press the Controller Assembly into the Bearing Cage (45) to within
1/8” of seating.
9. Apply a film of light grease to the inside diameter and outside
diameter of the Rotor Bearing Seal and align the Seal with both
cylinder dowel pins.
NOTICE
Use only the special No. 99V60-950 Controller Wrench for
installing the Controller Assembly. Tighten to 10 ft-lb (13.6 Nm)
torque.
WARNING
Tighten the Controller to 14 to 16 ft-lb (19.0 to 21.7 Nm) torque.
Do not exceed 16 ft-lb. The Controller may be damaged if this
torque is exceeded.
Always check the free speed of a Grinder after it has been
reassembled and before it is put back into service. Refer to the
Test and Inspection Procedure.
Never use a Grinder which runs in excess of the maximum speed
listed in the Test and Inspection Procedure.
NOTICE
The Controller has a left-hand thread.
10. Slip the Controller Assembly over the arbor aligning the Dowel
Pin hole with the Cylinder Dowel (38).
11. Apply the Controller Retaining Nut (46) and tighten to 6ft-lb
(8.1 Nm) torque for 99V85 Models, 9 ft-lb (12.2 Nm) for all other
models. Lightly tap both ends of the Arbor (29). The Arbor and
Rotor (34) must turn freely when manually rotated, and the
Cylinder (36) must have some play between the end plates.
12. Hold the Cylinder Case in a vise with the motor bore upward by
gently clamping the Dead Handle (27).
13. Dampen the Rear End Plate Gasket (41) with
Ingersoll Rand
No. 50 Oil, align it with the hole in the motor seat and place the
Gasket in the Cylinder Case.
14. Center the long boss on the face of the Front End Plate (31) with
the alignment mark on the face of the Cylinder Case and insert
the motor into the bore approximately 1/2” (13 mm).
15. Wrap the Exhaust Silencer (39) around the Cylinder with the felt
end over the exhaust ports in the Cylinder.
16. Slide the motor into the motor bore.
NOTICE
It may be necessary to slightly rotate the motor to fully seat it in
the Cylinder Case bore.
17. Insert the two Motor Clamp Washers (47), beveled side down.
18. For models with built-in oilers, if the Oiler Assembly (23) was
removed from the Cylinder Case, apply the Oiler Body Seal (26)
to the lip of the Oiler Assembly (23), insert the Oiler Felts (24)
and tighten the Oiler Adjusting Screw (25). Seat the assembly
in the cavity of the Cylinder Case and fill the Oiler with the
recommended oil.
19. Apply the Cylinder Case Gasket (48), the proper Guard (49 or 50),
the Cylinder Case Screw Lock Washers (51) and the four
Screws (52). Slightly tighten opposite screws, make sure the arbor
is free and then tighten all screws to 14 ft-lb (19 Nm) torque.
20. Again, make certain the Arbor is free.
21. The Dead Handle (27) can be adjusted to two positions.
For models without a built-in oiler,
insert a 5” (127 mm) long
3/16” hex wrench into the elongated slot in the end of the Dead
Handle and loosen the screw securing the Handle to the Cylinder
Case. Rotate the Handle 180ˇ and tighten the screw to 18 ft-lb.
(24.4 Nm) torque.
For models with a built-in oiler,
loosen the Dead Handle Screw
(28), change the position of the Dead Handle and tighten the
Screw to 9 ft-lb. (12.2 Nm) torque.
Test and Inspection Procedure
WARNING
Disconnect the Grinder from the air supply hose or shut off
air to the tool before proceeding with the Test and Inspection
Procedure.
Run the performance tests at 90 psig (6.2 bar/620 kPa) air pressure at
the inlet of the tool with an eight foot (2.44 m) length of 3/4” (19 mm)
diameter air supply hose.
Without a wheel on the tool, operate the Grinder with the Throttle
Lever fully depressed and check the free speed by applying a
hand-held tachometer to the spindle end. The minimum and
maximum allowable free speeds are as follows:
Model Stamped
Free Speed, rpm
Minimum Maximum
99V45 4500 4300 4550
99V60 6000 5650 6050
99V77 7700 7250 7750
99V85 8500 7950 8550
1.