Table of Contents
Advertisement
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 Model 2920B and 2920B9 Impactool is
disassembled for maintenance and repair or replacement
of parts, lubricate the tool as follows:
1.
Work 12 to 15 cc of Ingersoll–Rand No. 100 Grease
into the impact mechanism. Coat the Anvil
(45, 47, 48, 50, 53 or 56) lightly with grease around
the Hammer Case Bushing (38 or 41). Inject 2 to 4 cc
of grease into the Grease Fitting (10 or 18).
2. Use Ingersoll–Rand Oil No. 50 for lubricating the
motor. Inject 1 to 2 cc of oil into the air inlet before
attaching the air hose. Remove the Oil Chamber Plug
(16 or 10) and fill the oil chamber.
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 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.
Model 2920B
Disassembly of the Square Drive Anvil and Spline
Drive Anvil
1.
Clamp the handle of the Impactool in leather–covered
or copper–covered vise jaws with the square drive
Anvil upward.
MAINTENANCE SECTION
2.
3.
4.
5.
Disassembly of the Quick–Change Anvil
1.
2. Remove the front Thrust Ring Lock (49) and Thrust
3.
4.
5.
18
Unscrew and remove the four Hammer Case Cap
Screws (39).
While lightly tapping on the end of the Anvil
(45 or 53) with a plastic hammer. Lift off the
Hammer Case (37).
Remove and discard the Hammer Case Gasket (36).
Grasp the Hammer Frame (42) and carefully lift off
the entire impact mechanism, making certain not to
drop the two Hammer Pins (43). If it is necessary to
disassemble the impact mechanism, refer to
Disassembly of the Impact Mechanism. If it is
unnecessary to disassemble the impact mechanism,
set it aside intact.
Clamp the handle of the Impactool in leather–covered
or copper–covered vise jaws with the Quick–Change
Anvil upward.
Ring (50).
The Retaining Ball (52) is held in the hole in the
Anvil (47) by the Retaining Sleeve. Once the
Retaining Sleeve is removed, the Retaining Ball
will fall free.
Remove the Retaining Sleeve Spring (51), Retaining
Sleeve, Retaining Ball, and the rear Thrust Ring
Lock (49).
While lightly tapping on the end of the Anvil with
a plastic hammer, lift off the Hammer Case (37) and
remove the Hammer Case Gasket (36).
Grasp the Hammer Frame (42) and carefully lift off
the entire impact mechanism, making certain not to
drop the two Hammer Pins (43). If it is necessary to
disassemble the impact mechanism, refer to
Disassembly of the Impact Mechanism. If it is
unnecessary to disassemble the impact mechanism,
set it aside intact.
Advertisement
Table of Contents
