Ingersoll Rand — Assembly of the Impact Mechanism
Repair & overhaul
From a Ingersoll Rand service manual — check it applies to your exact model before use.
Before you start
- To ensure proper Reverse Valve operation, the Reverse Lever must stay in this position when installing the Backcap and Reverse Valve.
- Hammers must be installed with the wide bevels facing the web of the Hammer Frame.
Procedure
- Coat the Hammers (39) with a light film of Ingersoll Rand No. 170 Grease.
- Replace the Hammers in the Hammer Frame (37) exactly as they were when marked prior to disassembly.
- Replace the Hammer Pins (38).
- Examine the base of the Anvil (40) and note its contour.
- Swing the top Hammer to its full extreme 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 the opposite direction and maneuver the Anvil slightly until it drops into the bottom Hammer.
Source: Ingersoll Rand service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.