Summary of Contents for Ingersoll-Rand 3940 Series
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10569408 Edition 1 January 2006 Air Impact Wrench Series 3940, 3942 & 3955 Maintenance Information Save These Instructions...
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Use Ingersoll-Rand No. 10 Oil for lubricating the motor. Inject approximately 1 to 2 cc of oil into the Straight Inlet (10) before Work approximately 12 to 15 cc of Ingersoll-Rand No. 170 Grease attaching the air hose. into the impact mechanism. Coat the Anvil (38) lightly with grease.
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Remove two Air Port Gaskets (29) and Air Port Gasket WARNING Retainers (28) from Housing. Disassembly of the Handle The following procedure requires the use of heat. Take all necessary precautions to prevent burns. Carefully Clamp Trigger Handle Assembly in leather-covered or copper- heat alternate sides of Housing until it is very warm.
Assembly of the Impact Mechanism 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 you marked them prior to disassembly. NOTICE If you are installing new Hammers, or want to change...