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Always wear eye protection when operating or
performing maintenance on this tool.
Always turn off air supply and disconnect 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 Model 1734A1 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. 100 Grease into the impact mechanism. Coat the
Anvil (48) lightly with grease. Also, coat the inside of
the Hammer Case Bushing (41) with grease. Inject
approximately 2 to 4 cc of grease into the Grease
Fitting (2).
2. Use Ingersoll–Rand No. 50 Oil for lubricating the
motor. Inject approximately 1 to 2 cc of oil into the
Straight Inlet (11) before attaching the air hose.
DISASSEMBLY
General Instructions
1. Do not disassemble the tool any further than necessary
to replace or repair damaged parts.
2. Whenever grasping a tool or part in a vise, always use
leather covered or copper–covered vise jaws to protect
the surface of the part 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 tool 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 (57). Remove Exhaust
Deflector (53) and Exhaust Gasket (55) and, if
necessary, pull Exhaust Baffle (54) and Exhaust
Silencer (56) from Deflector.
3. Using a hex wrench, unscrew and remove the four
Hammer Case Cap Screws (44) and Lock Washers
(43).
4. While lightly tapping on the end of Anvil (48) with
a plastic hammer, lift off Hammer Case (40).
MAINTENANCE SECTION
5. Remove the Hammer Case Gasket (42).
6. Grasp the Anvil and lift it from the impact mechanism
Disassembly of the Impact Mechanism
1. Set mechanism, driver end up, on a workbench.
2. Slide the Hammer (47) from the Hammer frame (45).
3. Lift off the Hammer Frame and the two Hammer Pins.
Disassembly of the Reverse Valve
1. Lightly clamp Motor Housing Assembly (27) in
2. Using a hex wrench, unscrew and remove the four
3. Lift Motor Clamp Washer (18) off Housing.
4. Move Reverse Lever (35) to center position and using
5. Pull Lever off Reverse Valve and remove Reverse
6. Using needle nose pliers, remove Reverse Lock
Disassembly of the Motor
1. Remove assembled motor and Motor Housing from
2. Lift Motor Housing (27) off Rotor, Rear End Plate (19)
3. Remove six Vanes (22) from Rotor.
4. Pull Rear End Plate off Rotor.
5. Open a set of vise jaws wide enough to clear hub of
15
making sure not to drop the Hammer Pins (46).
leather–covered or copper–covered vise jaws with
Outside 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.
Handle Cap Screws (17) and Lock Washers (16). Lift
assembled handle and Handle Gasket (15) off Motor
Housing and set them aside.
a drift pin to push from below, grasp Lever and lift
Reverse Valve Assembly (38) out of Housing.
Make certain the Lever is in the center position to
avoid jamming the Reverse Lock Plunger (36) when
the Reverse Valve Assembly is removed.
Valve Bushing Seal (39) from groove on Valve.
Plunger and Reverse Lock Plunger Spring (37) from
Motor Housing.
vise jaws and using a plastic hammer, tap splined shaft
of Rotor (21) to dislodge Rotor from Front Rotor
Bearing (25).
and Rear Rotor Bearing (20) which will remain
together as a unit.
Rear End Plate and sharply rap hub end of end plate on
top of jaws to dislodge Rear Rotor Bearing.
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