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

Disconnecting the Air MotorDisplacement Pump ServiceWARNINGTo reduce the risk of serious injury whenever youare instructed to relieve pressure, always follow thePressure Relief Procedure on page 10.1. Relieve the pressure. Disconnect the fluid hosesand remove the pump from its mounting.12. Remove the retaining ring (43) and slide themounting plate (44) off the pump. See Fig. 5.3. Place the pump in a vise with soft jaws, with thejaws on the cylinder (101). Unscrew the intakecylinder (110) from the pump cylinder (101). SeeFig. 6.4. Use a pipe wrench on the lower part of the outlethousing (18) to loosen the air motor (1) from thecylinder (101). See Fig. 5.5. Continue to screw the motor (1) off the cylinder(101) by hand, until the pin (112) joining the displacementrod (17) with the connecting rod (102) isaccessible. Use a punch to drive the pin (112) outof the rods (17 and 102) See Fig. 7.44436. Hold the air motor (1) to prevent it from fallingwhen performing this step. Using a wrench on thenut (109), unscrew the connecting rod (102) formthe displacement rod (17) to release the motor.See Fig. 8.7. To service the displacement pump, refer to pages18 and 19. To service the air motor, including thethroat packings, refer to pages 20 to 25.101110Apply 113500 sealantto threads whenreassembling.Fig. 58763C