Craftsman 9-19905 Owners Manual - Page 15
ing. If the Hammer Case Gas
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1. Coat the Hammers (14) with a light film of Craftsman No. 18830 Grease. 2. Heavily coat the jaws of the Anvil (8) with Craftsman No. 18830 Grease. 3. Replace the Hammers In the Hammer Frame (12) exactly as they were when you marked them prior to disassembly. NOTICE: 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. 4. Replace the Hammer Pins (13). 5. Examine the base of the Anvil (8) and note its contour. While looking down through the 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 the opposite direction from the top Hammer and maneuver the Anvil slightly until it drops into the bottom Hammer. See Figure 18. Assembly of the Air Wrench 1. Position the Motor Housing (19) in leather-covered vise jaws with the splined shaft of the Rotor in a horizontal position. 2. Place the assembled impact mechanism down onto the splined hub of the Rotor. 3. Position the Hammer Case Gasket (18) against the face of the Motor Housing. NOTICE: Be sure that the flat on the bottom of the Hammer Case Gasket is installed in the corresponding flat in the Housing. If the Hammer Case Gasket is not installed correctly, the Air Wrench will not function properly. See Figure 19. 4. Apply a thin film of Craftsman No. 18830 Grease on inside surface of the Hammer Case Bushing (16), and place the Hammer Case (15) down over the Anvil and against the Motor Housing. Front of housing Figure 19 5. Install the Hammer Case Screws (11) and tighten them to 25 in-lb (2.8 Nm) torque. 15