Ingersoll Rand — Assembly of the Reverse Valve

Repair & overhaul

From a Ingersoll Rand service manual — check it applies to your exact model before use.

Procedure

1. Inject grease into hole in Motor Housing (26); install Reverse Lock Plunger Spring (31) and Reverse Lock Plunger (30).
2. Install a new Reverse Valve Bushing Seal (14) in the annular groove on Reverse Valve (13).
3. Coat Reverse Valve with oil; install in Housing with side hole nearest the Seal pointed toward Rotor (22).
4. Position Reverse Lever (12) on Reverse Valve, depress Lock Plunger with a thin blade screwdriver and push Lever on.
5. Place a new Handle Gasket (17) on the Motor Housing.
6. Examine Reverse Valve Seal (11) in Handle; replace if nicked, deformed or worn.
7. Fill rotor cavity in Handle with recommended grease and position Handle on Motor Housing.
8. For 3940 and 3942 Series: install four Handle Cap Screws (15) and tighten alternately to 10 and 12 ft-lb (14 and 16 Nm).
9. For 3955 Series: install four Handle Cap Screws (15) and tighten alternately to 25 and 28 ft-lb (34 and 38 Nm).
10. Move Reverse Lever through forward and reverse positions to make certain it locks in position.
11. Turn assembly in vise jaws and clamp on Handle with rotor shaft upward.
12. Pack Front Rotor Bearing with additional grease and rotate rotor shaft.

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.

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