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Always wear eye protection when operating or performing maintenance on this tool. Always turn off the air supply and disconnect the air supply
hose before installing, removing, or adjusting any accessory on this tool or before performing any maintenance on this tool.
Lubrication
Each time a Series 2945 or 2950 Super Duty impactool is disassembled
for maintenance and repair or replacement of parts, lubricate the tools as
follows:
1.
Work approximately 12 cc of Ingersoll-Rand No. 170 Grease into
the impact mechanism. Coat the Anvil (44) or (46) lightly with grease
Oiler Adjustment
The built-in lubricator is adjusted prior to leaving the factory. At times, it
may be desirable to increase or decrease the flow of oil to the tool. To
make this adjustment, proceed as follows:
1.
Remove four Handle Cap Screws (16) and without damaging the
Handle Gasket (15), pull the Handle (1) away from the Motor
Housing Assembly (27).
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 or tool and
help prevent distortion. This is particularly true of threaded members
and housings.
3.
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.
4.
Do not disassemble the Impactool unless you have a complete set of
new gaskets and O-Rings for replacement.
Disassembly of the Impactool
1.
Grasp tool in copper-covered or leather covered vise jaws with
square drive upward.
2.
Using a hex wrench, unscrew and remove the two Deflector Screws
(61). Remove Exhaust Deflector (57) and Exhaust Gasket (58) and, if
necessary, pull the Exhaust Baffle (60) and Exhaust Silencer (59)
from the Deflector.
3.
Using a hex wrench, unscrew and remove the four Hammer Case
Cap Screws (42) and (42A) and Lock Washers (43). Remove Dead
Handle Bracket (51) and two Bracket Spacers (52).
4.
While lightly tapping on end of Anvil (44) with a plastic hammer, lift off
Hammer Case (40).
5.
Remove Hammer Case Gasket (36).
6.
Remove the Anvil by rotating it as it is lifted out of the assembly.
7.
Lift the remaining hammer assembly off the rotor shaft.
8.
Push the two Hammer Pins (38) out of the Hammer Frame Assembly
(37) and slide the two Hammers (39) out of the Frame.
Disassembly of the Impact Mechanism
1.
Set mechanism, drive end up, on a workbench.
NOTICE
Note the twin hammers within the Hammer Frame. These are
identical, but must be placed in the Hammer Frame in a certain
relationship. Using a
felt-tipped pen, mark the top hammer "T " and the bottom hammer
"B " with the arrows pointing upward. Mark both Hammers on the
same end.
2.
With mechanism sitting upright on a workbench, slowly rotate Anvil in
a clockwise direction until it comes up solid.
NOTICE
If you continue to rotate the Anvil, it will cam the Hammers out of
engagement. Do not allow this to happen; merely rotate the Anvil
until it comes up solid.
3.
Hold the Hammer Frame firmly and, without disturbing hammers,
gently lift Anvil, simultaneously rotating it clockwise about 1/8 of a
turn, from the Hammer Frame.
2
WARNING
around the Hammer Case Bushing (41). Inject approximately 4 cc of
grease into the Grease Fitting (2).
2.
Use Ingersoll-Rand No. 10 Oil for lubricating the motor. Inject 2 cc of
oil into the air inlet before attaching the air hose. Remove the Oil
Chamber Plug (12) and fill the oil chamber.
2.
Using a small screwdriver, rotate Oiler Adjusting Screw (4) located
inside reverse valve hole in the Handle. Rotating the Screw
clockwise decreases oil flow rotating Screw counterclockwise
increases oil flow. If oil flow does not increase when Screw is rotated
counterclockwise, Oiler Felt (3) is clogged and should be replaced.
3.
Reposition Handle and install the four Handle Cap Screws. Tighten
Cap Screws between 10 and 12 ft-lb (13.5 and 16.3 Nm) torque.
The Twin hammers will be free to slide form the Hammer Frame
when the Hammer Pins are removed. Do not drop the Hammers.
4.
With Anvil removed, lift out the two Hammer Pins.
5.
Remove the Hammers.
Disassembly of the Reverse Valve
1.
Lightly clamp Motor Housing Assembly (27) in copper-covered or
leather-covered vise jaws with Trigger Handle Assembly (1) upward.
Excessive clamping pressure will distort the Motor Housing and
make motor removal extremely difficult. Do not insert the hammer
case end of the Motor Housing more than 1" (25mm) into the vise
jaws.
2.
Using a hex wrench, unscrew and remove the four Handle Cap
Screws (16) and Lock Washers (17). Lift assembled handle and
Handle Gasket (15) off Motor Housing and set them aside.
3.
Lift Motor Clamp Washers (18) off Housing.
4.
Move Reverse Lever (33) to the centre position and using a drift pin
to push from below, grasp Lever and lift Reverse Valve Assembly
(31) out of Housing.
Make certain the Lever is in the center position to avoid jamming the
Reverse Lock Plunger (34) when the Reverse Valve Assembly is
removed.
5.
Pull Lever off Reverse Valve and remove Reverse Valve Bushing
Seal (32) from groove on Valve.
6.
Using needle nose pliers, remove Reverse Lock Plunger and
Reverse Lock Plunger Spring (35) from Motor Housing.
Disassembly of the Motor
1.
Remove assembled Motor from vise jaws and using a plastic
hammer, tap splined shaft of Rotor (21) to dislodge Rotor from Front
Rotor Bearing (25).
2.
Lift Motor Housing (27) off Rotor, Rear End Plate (20) and Rear Rotor
Bearing (19) which will remain together as a unit.
3.
Remove the six Vanes (22) from Rotor.
4.
Pull Rear End Plate off Rotor.
5.
Open a set of vise jaws wide enough to clear the hub of Rear End
Plate and sharply rap hub end of end plate on top of jaws to dislodge
Rear Rotor Bearing.
6.
Remove Cylinder Dowel (26) and lay Motor Housing on top of vise
jaws with the Front Rotor Bearing (25) downward between the jaws.
Using a soft drift pin, tap Bearing out of Housing.
7.
To remove Cylinder (23) and Front End Plate (24), thread four 1/4"-
20 thread socket head cap screws that are at least 3" (75mm) long in
NOTICE
NOTICE
NOTICE
Form 04584306-Edition 1
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