Ingersoll Rand — Assembly of the Impact Mechanism

A Ingersoll Rand service procedure — check it applies to your exact model before use.

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Before you start

If you are installing new Hammers, or want to change the location of the 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

Procedure

Coat Hammers (37) with a light film of Ingersoll-Rand Impactool Grease No. 170.
Replace Hammers in Hammer Frame (35) exactly as they were when marked prior to disassembly.
Replace Hammer Pins (36).
Examine base of Anvil (38) and note its contour. While looking down through Hammer Frame, swing the top Hammer to its full extreme one way or another until you can match the contour of the Anvil. Enter the Anvil into the Hammer Frame and through the first Hammer. Swing the bottom Hammer in opposite direction from the top Hammer and maneuver Anvil slightly until it drops into bottom Hammer.

Specs & torque values

Hammers (37)
Ingersoll-Rand Impactool Grease No. 170
Hammer Frame (35)
Hammer Pins (36)
Anvil (38)

Source: manual:10569408ed2b.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.