Ingersoll Rand — Disassembly of the Air Impact Wrench
Repair & overhaul · Model 1720B
From a Ingersoll Rand service manual — check it applies to your exact model before use.
Before you start
- Do not disassemble the tool any further than necessary to replace or repair damaged parts.
- Do not disassemble the tool unless you have a complete set of new gaskets and O-rings for replacement.
Procedure
- Clamp the handle of the tool in leather-covered or copper-covered vise jaws with the square driver upward.
- Unscrew and remove the four Hammer Case Cap Screws (35).
- While lightly tapping on the end of the Anvil (41) with a plastic hammer, lift off the Hammer Case (33) and remove the Hammer Case Gasket (32).
- Grasp the Hammer Frame (38) and carefully lift off the entire impact mechanism, not dropping the two Hammer Pins (39).
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
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.