PUMP GP-PISTON 3196308 - Caterpillar

1. Remove the four nuts and lockwashers that hold cover assembly (2) to the lower right side of the front frame.2. Remove cover assembly (2) and master cylinder (1) from the frame. Disconnect oil line (3) from the master cylinder.3. Connect oil line (3) to master cylinder (1).4. Fill the master cylinder with brake fluid. Make sure the cap is installed on the master cylinder.5. Fasten a hose to the bleed valve on the slave cylinder (found under the operator's seat). Put the loose end of the hose in a reservoir (container) of brake fluid until it is below the surface of the fluid.6. Hold the lift control lever in the "RAISE" position so the slave cylinder push rod does not move.7. Activate the master cylinder several times and hold the rod and piston all of the way in the master cylinder bore. 8. Open the bleed valve (4) on the slave cylinder. Close the bleed valve when the pressure is not high enough to push brake fluid out.9. Do Steps 1 through 5 until there are no air bubbles in the brake fluid that comes out of the bleed valve. Fill the master cylinder with brake fluid.10. Put master cylinder (1) and cover assembly (2) in position. Install the four nuts and lockwashers that hold the cover assembly.