Ingersoll-Rand 2955 Series Original operating manual

2955 Series Impact Wrench
Service Instruction
5/16 HEX Wrench
Required Service Tools
IR Grease Gun IR #10 Oil
Grease #170
Torque Wrench
O-ring LubricationMedium read Locker
Arbor Press Long in T handle HEX 1/4 HEX Wrench
Power Tools and Industrial Liing - Customer Technical Service

2
Power Tools and Industrial Liing - Customer Technical Service
Service Steps Disassembly
Using a 5/16 Hex wrench break loose (4) Hammer Case Cap
Screws.
Remove the (4) Hammer Case Cap Screws.
Use a dead hammer to dislodge the Hammer Case from tool by
tapping the Anvil while holding on to the Hammer Case.
Push lightly down with the le while removing the Hammer Case
with the right hand.

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Power Tools and Industrial Liing - Customer Technical Service
Service Steps Disassembly
Grasp the Anvil rmly. Carefully li and pull the assembly o
the Tool.
Take care not to let the assembly come apart.
Hammer Frame Assembly
To disassemble Hammer Frame Assembly:
• Hold rmly onto the Hammer Frame.
• Rotate Anvil slightly while liing to disengage the Anvil from
the Hammers and remove it from Hammer Frame.
The Hammers are idencal but need to be placed back in the
same orientaon as they were when they were taken apart.
Mark the Hammers for re-installaon later.

4
Power Tools and Industrial Liing - Customer Technical Service
Service Steps Disassembly
Use a slim hex wrench to push (2) Hammer Pins from the
Hammer Frame.
Remove (2) Hammers from the Hammer Frame.
Hammer Frame components
1. Hammer Frame
2. Hammers
3. Anvil
4. Hammer Pins
Motor Housing Assembly
1
2
3
4

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Power Tools and Industrial Liing - Customer Technical Service
Service Steps Disassembly
Remove Hammer Case Gasket.
Pinch the Exhaust Guard upward to dislodge and remove it.
Remove Exhaust Silencer.
Set Motor Assembly Housing upright on the bench.

6
Power Tools and Industrial Liing - Customer Technical Service
Service Steps Disassembly
Set Reverse Lever to center posion.
This will avoid the Reverse Lock Plunger from jamming while
removing the Reverse Lever Assembly.
Use a 1/4” Hex wrench to loosen (4) Cap screws.
Remove (4) Cap screws.
Remove Handle Assembly.

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Power Tools and Industrial Liing - Customer Technical Service
Service Steps Disassembly
Remove (2) Motor Clamp Washers.
Remove Handle Gasket.
From the Exhaust Outlet use the short end of the 1/4” Hex
wrench to press the Reverse Valve upwards.
Remove Oring.

8
Power Tools and Industrial Liing - Customer Technical Service
Service Steps Disassembly
Remove Reverse Valve Assembly.
Remove Reverse Lock Plunger and Spring.
Holding on to the End Plate, ip Motor Housing Assembly
onto its End Plate.
Li the Motor Housing Assembly o Rotor, Rear End Plate, and
Rear Rotor Bearing which will remain together as unit.

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Power Tools and Industrial Liing - Customer Technical Service
Service Steps Disassembly
Remove Cylinder Dowel.
Remove (6) Vanes.
Remove Rotor from Rear End Plate.
Motor Housing Assembly
1. Cylinder
2. Front Endplate
1
2

10
Power Tools and Industrial Liing - Customer Technical Service
Service Steps Disassembly
To remove Cylinder and Front End Plate from Motor Housing
Assembly, place Motor housing facing up on workbench.
Thread four 5/16” - 18 thread socket head cap screws that are at
least 3” (75mm) long into the handle end of Housing.
Grasping Housing with installed screws downward, sharply strike
heads of screws on a sturdy table to dislodge Cylinder.
Cylinder should drop out of housing aer a few impacts.

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Power Tools and Industrial Liing - Customer Technical Service
Service Steps Disassembly
The End Plate may not drop completely out of the Cylinder.
If Front End Plate remains in the Cylinder use a wood dri to
gently tap the Front End Plate the rest of the way out.
Remove Bearings from End Plate(s).
Using the Cylinder place the End Plate over its opening, Bearing
down.

12
Power Tools and Industrial Liing - Customer Technical Service
Service Steps Disassembly
Li both Cylinder and End Plate at the same me and thump
them on a wood work bench to dislodge the End Plate Bearing.
End Plate Bearing will dislodge aer a few thumps of the
Cylinder on the work bench.
Loosen and remove Straight Inlet Bushing.
Note: Use a 33mm socket.
Remove Throle Valve Spring.

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Power Tools and Industrial Liing - Customer Technical Service
Service Steps Disassembly
Remove Throle Valve Seal.
Remove Throle Valve Plunger.
2955 Series Impact Wrench components

14
Power Tools and Industrial Liing - Customer Technical Service
Service Steps Reassembly
2955 Series Impact Wrench components
Valve components:
1. Straight Inlet
2. Reverse Valve Seal
3. Throle Valve Spring
4. Throle Valve Plunger
Lubricate Throle Valve Plunger with IR Motor #10 Oil.
Insert Throle Valve Plunger into Handle, rounded end leading
rst.
1
2
3
4

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Power Tools and Industrial Liing - Customer Technical Service
Service Steps Reassembly
Lubricate Throle Valve Assembly O-ring with o-ring lubricant.
Insert Assembly with Throle Valve Seal leading, into Handle
Inlet.
Insert Throle Valve Spring, small diameter end rst, into Handle.
Tighten Straight Inlet to 50 - 60 -lb (68 - 80Nm).
Note: Use a 33mm socket

16
Power Tools and Industrial Liing - Customer Technical Service
Service Steps Reassembly
Use IR Motor #10 Oil to lubricate opening of the Motor Housing.
1. Air port Gasket container(s)
2. Air port Gasket(s)
Insert Air Port Gasket into Air Port Container.
Lubricate Air Port Gasket Container(s) with IR 105 grease.
1
2

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Power Tools and Industrial Liing - Customer Technical Service
Service Steps Reassembly
Insert Air Port Assembly into air port(s) inside Motor Housing.
Installaon of End Plate bearings:
Pack Bearing races with grease and use aan Arbor press or
equivalent to press Bearing(s) into End Plate(s).
When pressing a bearing into a recess, press on the outer race.
Note: When pressing a bearing onto a sha, press on its inner
race
Using a long T hex wrench as an alignment pin, align Dowel
Hole(s) in End Plate and Cylinder with the Dowel Hole in the
boom of the motor bore.

18
Power Tools and Industrial Liing - Customer Technical Service
Service Steps Reassembly
Lower both pieces together into the Cylinder opening.
The pieces will support each other and make installing the items
easier.
Do NOT FORCE. Extremely ght tolerances.
Manipulate the cylinder using small adjustments to further
advance the Cylinder into Motor Housing.
If necessary, gently tap around perimeter of the Cylinder unl the
End Plate drops into the housing.
Again maneuver the Cylinder slightly unl it drops completely into
the Motor Housing.

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Power Tools and Industrial Liing - Customer Technical Service
Service Steps Reassembly
Press rmly downward to ensure the Cylinder is properly seated.
Insert splined hub of Rotor through Cylinder and into Front End
Plate.
Coat each vane with a light coat of IR #10 oil.
Insert Vanes into Rotor, straight edge facing out.

20
Power Tools and Industrial Liing - Customer Technical Service
Service Steps Reassembly
Liberally lubricate Rotor and Vanes with IR #10 motor oil.
Use a long T hex wrench to align Front End Plate Dowel Hole
with Cylinder Dowel Hole and insert Front End Plate into Motor
Housing.
Press down on Endpalte to ensure it is fully seated.
Lubricate Cylinder Dowel with IR #10 motor oil.