Ingersoll-Rand 2934B2SP-EU Setup guide

04584280
Edition 3
January 2014
Save These Instructions
Air Impact Wrench
Models 2934B2SP-EU, 2934B9SP-EU
and 2940B2SP-EU
Maintenance Information

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Product Safety Information
WARNING
Failure to observe the following warnings, and to avoid these potentially hazardous situations, could result in death or serious
injury.
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
assessed for each use and may include impact-resistant glasses with side shields, goggles, or a full face shield over those glasses.
Always turn o the air supply, bleed the air pressure and disconnect the air supply hose when not in use, before installing, removing
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
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•
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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).
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 ll
the oil chamber.
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 t 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 Deector
Screws (33). Remove Exhaust Deector (29) and
Exhaust Gasket (32) and, if necessary, pull Exhaust Bae (31) and
Exhaust Silencer (30) from Deector.
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 o 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 o 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.
NOTICE
Excessive clamping pressure will distort the Motor housing and
make motor removal extremely dicult. Do not insert the
hammer case end of the motor housing more than 1” (25 mm)
into the vise jaws.
2. Using a hex wrench, unscrew and remove four handle Cap Screws
(44) and Lock Washers (45). Lift assembled handle and handle
Gasket (15) o Motor Housing and set them aside.
3. Lift motor Clamp Washer (16) o 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.
NOTICE
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 o 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) o 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 o 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.
WARNING
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.

04584280_ed3 3
8. Remove the two Air Port Gaskets (27) and Air Port Gasket
Retainers (28) from Housing.
Disassembly of the Handle
1. Clamp Trigger Handle Assembly in copper-covered or leather-
covered vise jaws with the Straight Inlet (11) upward.
2. Using a wrench, unscrew and remove Inlet as well as Air Strainer
Screen (12) and valve Spring (10).
3. Remove Throttle Valve Assembly (8) and the Valve Plunger (7)
from Handle.
4. If Trigger (5) must be removed, use an arbor press to push Trigger
Pin (6) from the Handle and slide Trigger out of slot in Handle.
General Instructions
1. Always press on the inner ring of a ball-type bearing when
installing the bearing on a shaft.
2. Always press on the outer ring of a ball-type bearing when
installing the bearing in a bearing recess.
3. 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.
4. Except for bearings, always clean every part and wipe every part
with a thin lm of oil before installation.
5. Apply O-Ring lubricant to every O-Ring before assembly.
6. Check every bearing for roughness. If an open bearing must
be cleaned, wash it thoroughly in clean solvent and dry it with
a clean cloth. Sealed or shielded bearings should never be
cleaned. Work grease thoroughly into every open bearing before
installation.
Assembly of the Handle
1. Position Trigger (5) in Handle (1) and using an arbor press, push
Trigger Pin (6) full length into Handle so that it captures the
Trigger.
2. Clamp Handle in copper-covered or leather-covered vise jaws
with air inlet opening upward.
3. Coat Throttle Valve Plunger (7) with oil and insert it, rounded end
leading, into inlet hole in the Handle.
4. Install a new Throttle Valve Face (9) on Throttle Valve (8) and
insert assembly, Valve Face leading, into inlet hole in Handle.
5. Encircle cone end of Air Strainer Screen (12) with large end of
Throttle Valve Spring (10) and insert both parts, Spring leading,
into inlet hole in Handle.
6. Install Straight Inlet (11) over Strainer Screen in Handle and
tighten Inlet between 20 and 25 ft-lb (27 and 34 Nm) torque.
7. Remove Handle from vise and test Trigger. If the Trigger functions
properly, place the assembled Handle aside. If it does not
function properly, disassemble Handle to determine cause of
problem.
Assembly of the Motor
1. Lightly clamp Motor Housing (25) in copper-covered or leather-
covered vise jaws with handle end upward.
NOTICE
Excessive clamping pressure will distort the Motor Housing and
make motor installation extremely dicult. Do not insert the
hammer case end of the Motor Housing more than 1” (25 mm)
into the vise jaws.
2. Coat inside surface of Housing and outer edge of Front End
Plate(22) with a light lm of oil.
3. Using a long tee hex wrench as an alignment pin, insert Front End
Plate, copper face trailing, into Motor Housing. Align dowel hole
in End Plate with dowel hole at the bottom of motor bore.
4. Lubricate and insert a new ber Air Port Gasket Retainer (28) in
one of the air ports inside Motor Housing.
5. Install an Air Port Gasket (27) in air port against Gasket Retainer
with at end of Gasket away from Retainer.
6. Repeat Steps 4 and 5 to install remaining Gasket and Retainer in
the other air port.
7. Coat outside of Cylinder (21) with a light lm of oil and using
the long tee hex wrench as an alignment pin to align holes
in Cylinder with holes in Front End Plate and Housing, insert
Cylinder into Housing.
8. Coat inside of Cylinder and Rotor (19) with a light lm of oil and
insert the splined hub of Rotor through Cylinder into Front End
Plate.
9. Coat each Vane (20) with a light lm of oil and insert a Vane
into each slot in the Rotor. Vanes must be installed with curved
edge toward center of Rotor. Spin the Rotor to settle Vanes into
position.
10. Using the long tee hex wrench to align hole in Rear End Plate
(17) with hole in the Cylinder, insert Rear End Plate, copper face
leading, into Motor Housing against the Cylinder. End Plate is
properly seated when the large trailing face of the End Plate is
slightly below face of Motor Housing.
11. Grease Rear Rotor Bearing (18) and install it in recess of Rear End
Plate.
12. Remove alignment pin from assembled motor and install Cylinder
Dowel (24). The Dowel is properly seated when end of Dowel
does not protrude above End Plate.
13. Install Motor Clamp Washer (16) against Rear End Plate so that
large outer edge of Washer contacts End Plate.
Assembly of the Reverse Valve
1. Inject a small amount of grease into hole in Motor Housing (25)
where Reverse Lock Plunger (35) will be installed. With the grease
to hold them in position, install Reverse Lock Plunger Spring (36)
and Lock Plunger.
2. Install a new Reverse Valve Bushing Seal (38) in the annular
groove on Reverse Valve (37).
3. Coat Reverse Valve with a light lm of oil and install it in Motor
Housing with the side hole nearest to the Seal pointed toward
the Rotor (19).
4. Position Reverse Lever (34) on Reverse Valve and while using a
thin blade screwdriver to depress the Reverse Lock Plunger, push
Lever onto Reverse Valve.
5. Place a new Handle Gasket (15) on Motor Housing.
6. Examine Reverse Valve Seal (13) located inside Handle and if it is
nicked, deformed or worn, remove it and install a new Seal.
7. Fill rotor cavity in Handle with the recommended grease and
position Handle on the Motor Housing.
8. Install four Handle Cap Screws (44) and Lock Washers (45) and
using an alternate tightening pattern, tighten Screws between 14
and 17 ft-lb (19 and 27 Nm) torque.
9. Move Reverse Lever through the forward and reverse positions to
make certain the Lever locks in position.
10. Turn assembly in vise jaws and clamp on Handle with rotor shaft
upward.
11. Grease Front Rotor Bearing (23) and place it over rotor shaft.
12. Select a socket or piece of tubing that will t over the outside
race of the Bearing and tap it with a hammer to seat Bearing into
Housing.
13. Pack Bearing with additional grease and rotate rotor shaft. If
shaft does not rotate smoothly, rap end of rotor shaft with a soft
hammer to set motor and try to rotate shaft again.
Assembly

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Troubleshooting Guide
Trouble Probable Cause Solution
Low power Dirty Inlet Bushing or Air Strainer Screen and/or
Exhaust Silencer
Using a clean, suitable, cleaning solution, in a well
ventilated area, clean Air Strainer Screen, Inlet Bushing
and Exhaust Silencer.
Worn or broken Vanes Replace complete set of Vanes.
Worn or broken Cylinder and/or scored End
Plates
Examine Cylinder and replace it if it is worn or broken or if
bore is scored or wavy. Replace End Plates if they are
scored.
Dirty motor parts Disassemble tool and clean all parts with a suitable
cleaning solution, in a well-ventilated area. Reassemble
tool as instructed in this manual.
Improper positioning of Reverse Valve Make certain that Reverse Valve is fully engaged to the
left or right.
Motor will not run Incorrect assembly of motor Disassemble motor and replace worn or broken parts and
reassemble as instructed.
Insucient lubricant in the impact mechanism Remove Hammer Case Assembly and lubricate impact
mechanism.
Tool will not impact Broken or worn impact mechanism parts Remove Hammer Case Assembly and examine impact
mechanism parts. Replace any worn or broken parts.
Impact mechanism not assembled correctly Refer to Assembly of Impact Mechanism.
Related Documentation
For additional information refer to:
Product Safety Information Manual 04580916.
Product Information Manual 04584835.
Parts Information Manual 04584454.
Manuals can be downloaded from ingersollrandproducts.com
Assembly of the Impact Mechanism
1. Coat Hammers (48) with grease and place the two together
so that the faces having the partial recess in the central
opening contact each other and the half notch in the edge of
one Hammer aligns with the wide notch in edge of the other
Hammer.
NOTICE
If you are installing new Hammers or want to change the
location of existing Hammers to utilize both impacting
surfaces, slide the
Hammers in the Hammer Frame so that the half-round notch
on one Hammer is located on one side of the Frame and the
half-round notch on the other Hammer is located on the other
side of the Frame.
2. Slide the two Hammers into Hammer Frame (46).
3. Capture the Hammers inside Frame by installing two Hammer
Pins (47) in end of the Frame opposite the hub with the internal
spline.
4. Insert Anvil (49) into end of Hammer Frame opposite hub with
internal spline until it seats. It may be necessary to rotate the
Anvil while moving the Hammers. Anvil is properly positioned
when Hammers are displaced whenever the Anvil is rotated.
5. Set assembled hammer mechanism onto rotor shaft spline.
6. Place Hammer Case Gasket (41) over mechanism and against
face of Motor Housing.
7. Grease Anvil and top of the Hammer Frame.
8. Place the Hammer Case (39) over the mechanism assembly
against Gasket.
9. Assemble Dead Handle (50) to Dead Handle Bracket (51). Insert
two Hammer Case Cap Screws (42) with Lock Washers (43)
through Bracket and install two Dead Handle Bracket Spacers
(52) on the Screws. Position the assembly against Hammer
Case and
thread Screws into Housing.
10. Thread remaining two Cap Screws and Lock Washers into
Housing and using an alternating pattern for all four fasteners,
tighten Screws to between 20 and 25 ft-lb (27 and 34 Nm)
torque.
11. Install a new Exhaust Silencer (30) in the Exhaust Deector (29)
and then install Exhaust Bae (31) in Deector.
12. Position a new Exhaust Gasket (32) against face of Motor
Housing. Position the assembled Deector against Gasket and
secure it by tightening the two Deector Screws (33).

Notes:

Notes:

Notes:

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