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Product Safety Information
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Failure to observe the following warnings, and to avoid these potentially hazardous situations, could result in death or serious
injury.
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Read and understand this and all other supplied manuals before installing, operating, repairing, maintaining, changing accessories
on, or working near this product.
Always wear eye protection when operating or performing maintenance on this tool. The grade of protection required should be
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assessed for each use and may include impact-resistant glasses with side shields, goggles, or a full face shield over those glasses.
Always turn off the air supply, bleed the air pressure and disconnect the air supply hose when not in use, before installing, removing
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or adjusting any accessory on this tool, or before performing any maintenance on this tool or any accessory.
Note: When reading the instructions, refer to exploded diagrams in Parts Information Manuals when applicable (see under Related Documentation
for form numbers).
Lubrication
Each time a Model 2934B2SP-EU, 2934B9SP-EU or 2940B2SP-
EU Impactool is disassembled for maintenance and repair or
replacement of parts, lubricate the tool as follows:
1. Work approximately 12 to 15 cc of Ingersoll Rand No. 170 Grease
into the impact mechanism. Coat the Anvil (49) lightly with
grease. Also, coat the inside of the Hammer Case Bushing 40) with
grease. Inject approximately 2 to 4 cc of grease into the Grease
Fitting (2).
Disassembly
General Instructions
1. Always disconnect the air supply line before performing any
maintenance on this tool.
2. Always use protective eyewear when performing maintenance
on a tool or when operating a tool.
3. Do not disassemble a tool any further than necessary to replace
or repair damaged parts.
4. Do not disassemble the Impactool unless you have a complete
set of new gaskets and O-Rings for replacement.
5. Do not remove any part which is a press fit in or on an assembly
unless the removal of that part is necessary for repair or
replacement.
6. Whenever grasping a tool or part in a vise, always use copper-
covered or leather-covered vise jaws to protect the surface of
the part and help prevent distortion. This is particularly true of
threaded members and housings.
Disassembly of the Impact Mechanism
1. Grasp tool in copper-covered or leather-covered vise jaws with
square drive upward.
2. Using a hex wrench, unscrew and remove two Deflector
Screws (33). Remove Exhaust Deflector (29) and
Exhaust Gasket (32) and, if necessary, pull Exhaust Baffle (31) and
Exhaust Silencer (30) from Deflector.
3. Using a hex wrench, unscrew and remove four Hammer
Case Cap Screws (42) and Lock Washers (43). Remove Dead
Handle Bracket (51) and two Bracket Spacers (52).
4. While lightly tapping on the end of Anvil (49) with plastic
hammer, lift off hammer Case (39).
5. Remove Hammer Case Gasket (41).
6. Remove Anvil by rotating it as it is lifted out of the assembly.
7. Lift remaining hammer assembly off rotor shaft.
8. Push two Hammer Pins (47) out of Hammer Frame Assembly (46)
and slide two Hammers (48) out of the Frame.
Disassembly of the Reverse Valve
1. Lightly clamp Motor Housing Assembly (25) 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" (25 mm)
into the vise jaws.
2
NOTICE
WARNING
2. Use Ingersoll Rand No. 10 Oil for lubricating the motor. Inject
approximately 1 to 2 cc of oil into the Straight Inlet (11) before
attaching the air hose. Remove the Oil Chamber Plug (14) and fill
the oil chamber.
2. Using a hex wrench, unscrew and remove four handle Cap Screws
(44) and Lock Washers (45). Lift assembled handle and handle
Gasket (15) off Motor Housing and set them aside.
3. Lift motor Clamp Washer (16) off Housing.
4. Move Reverse Lever (34) to center position and using a drift pin to
push from below, grasp Lever and lift Reverse Valve Assembly (37)
out of Housing.
Make certain the Lever is in the center position to avoid jamming
the Reverse Lock Plunger (35) when the Reverse Valve Assembly
is removed.
5. Pull Lever off Reverse Valve and remove Reverse Valve Bushing
Seal (38) from groove on the Valve.
6. Using needle nose pliers, remove Reverse Lock Plunger and
Reverse Lock Plunger Spring (36) from Motor Housing.
Disassembly of the Motor
1. Remove assembled motor from the vise jaws and using a plastic
hammer, tap splined shaft of Rotor (19) to dislodge Rotor from
Front Rotor Bearing (23).
2. Lift Motor Housing (25) off Rotor, Rear End Plate (17) and Rear
Rotor Bearing (18) which will remain together as a unit.
3. Remove six Vanes (20) from Rotor.
4. Pull Rear End Plate off Rotor.
5. Open a set of vise jaws wide enough to clear 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 (24) and lay Motor Housing on top of vise
jaws with the Front Rotor Bearing (23) downward between the
jaws. Using a soft drift pin, tap Bearing out of Housing.
7. To remove Cylinder (21) and Front End Plate (22), thread four
1/4"- 20 thread socket head cap screws that are at least
3" (75 mm) long into handle end of Housing. Grasping Housing
with installed screws downward, sharply strike heads of the
screws on a sturdy table to dislodge Cylinder. Cylinder should
drop out of Housing after a few impacts.
The following procedure requires the use of heat. Take all
necessary precautions to prevent burns.
If it does not, carefully heat alternate sides of Housing until it is very
warm. Using thick, heavy gloves to avoid being burned, grasp
Housing and repeat the attempt to dislodge Cylinder.
NOTICE
WARNING
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