309244D 50:1 Ratio Double Acting Falcon Grease Pumps - Graco Inc.

Air Motor ServiceThroat Packing ServiceDisassembly1. Remove the air motor cover (69).2. Disconnect the air motor (1) from the displacementpump, as explained on page 15.3. Remove the three screws (29) holding the outlethousing (18) to the bottom cylinder cap (4). Pullthe housing off the cap, being careful not to damagethe piston rod (17). See Fig. 10.4. Remove the u-cup packing from the cap (4).5. Remove the copper gasket (39) and the u-cuppacking (20) from the outlet housing (18).Reassembly1. Lubricate the u-cup packing (19*) and install it inthe bottom cylinder cap (4), with the lips facing uptoward the air motor (1). See Fig. 10.2. Grease and install the u-cup packing (20*) and thecopper gasket (39*) in the outlet housing (18). Thelips of the u-cup must be facing down, toward thepump.3. Install the housing (18) on the cap (4).4. Reconnect the air motor (1) to the displacementpump, as explained on page 15.5. Replace the air motor cover (69).70 Lubricate.2 Lips face up, toward air motor (1).3 Lips face down, toward pump.69141719*2182920* 339*Fig. 108761C