LINES GP-BOOM CYLINDER 1158903 - Caterpillar

2. Put identification on air lines (1) and (2). Disconnect the air lines from the selector valve. 3. Remove screws (3), the clamp and the retarder selector valve.Install Retarder Selector Valve
1. Put retarder selector valve (1) in position on the steering column and install clamp (2) that holds it in place. 2. Connect retarder control air line (3) and supply air line (4) to the retarder selector valve.Disassemble Retarder Selector Valve
start by:a) remove retarder selector valve 1. Remove setscrew (2) and handle (1) from the cam.2. Remove O-ring seal (3) from the cover. 3. Remove lockring (4).4. Remove screws (6) and cover (5) from the body.5. Remove cam and follower assembly (7) from the cover. 6. Remove adjusting ring (8) from the cover. 7. Remove piston assembly (9) and the spring from the body.8. Remove screws (10) and the valve assembly from the body.9. Remove the O-ring seals from the piston assembly and valve assembly.Assemble Retarder Selector Valve
Put clean 1P808 General Purpose Lubricant on all valve parts before assembly. 1. Install O-ring seal (1) on the valve assembly and O-ring seal (2) on the piston assembly.2. Put the valve assembly in position in the body and install screws (4) to hold it in place.3. Install spring (3) and the piston assembly in the body as shown. 4. Install adjusting ring (5) in the cover so it is even with the top of the cover as shown. 5. Install follower (6) in cam (7). Install the cam and follower assembly in the cover as shown. 6. Install gasket (9) on the body.7. Put the cover in position on the body with passages (8) in alignment. Install the screws that hold the cover on the body. 8. Remove the two unions from the body. Install tool (A) in the delivery passage as shown and connect an air hose (11) to the supply passage as shown. The air hose must have at least 90 psi (620 kPa) (6.3 kg/cm2).9. Use handle (10) to turn the cam and check the first (initial) and last (final) pressure. 10. Remove the handle and adjusting ring (5) until the first (initial) pressure is 27 3 psi (190 20 kPa) (1.9 0.2 kg/cm2) and the last (final) pressure is 80 5 psi (550 35 kPa) (5.6 0.4 kg/cm2).11. Remove the air hose and tool (A). Install the unions in their original positions. 12. Install O-ring seal (13) on the cover. Install lock ring (12) to hold adjusting ring (5) in place.13. Put the handle in position on the cam and install setscrew (14) to hold it in place.end by:a) install retarder selector valve