SEAT GP-SUSPENSION 3583854 - Caterpillar

1. Put identification on oil lines (1) and (2) for installation purpose. Disconnect oil lines (1) and (2) from the servo-sending cylinder for the steering. 2. Remove bolts (4) and steering servo-sending cylinder (3) and the spacers.Install Steering Cylinder (Servo-Sender)
1. Install spacers (1) at each end of the steering servo-sending cylinder and install the cylinder as shown. 2. Connect oil line (3) that goes from the rod end of the steering servo-receiver cylinder to the rod end of the steering servo-sender cylinder.3. Connect oil line (4) that goes from the head end of the steering servo-receiver cylinder to the head end of the steering servo-sender cylinder.4. Connect oil line (2) that goes from the hydraulic tank to the relief valves on the steering servo-sending cylinder.5. Remove all air from the circuit for the servo cylinders. See "AIR IN FOLLOW-UP CIRCUIT" in 631D, 633D and 637D STEERING SYSTEM TESTING AND ADJUSTING.Disassemble Steering Cylinder (Servo-Sender)
start by:a) remove steering cylinder (servo-sender) 1. Use a soft hammer to remove bolts (1) from the cylinder.2. Remove bolts (2) and body (3) for the relief valves and bleed valves. 3. Remove bleed valves (4), O-ring seals (5) and plugs (6) for the relief valves. Remove the shims, springs and balls behind plugs (6). Do not mix the shims for the relief valves. 4. Put the cylinder in a vise. Remove four bolts (7). 5. Pull rod (8), the retainer and head out of the cylinder. 6. Put the rod in a vise and remove nut (10) from the rod.7. Remove piston (9), head (12) and retainer (11) from the rod.8. Remove the seals and ring from the piston. Remove the O-ring seals and packing from the head. Remove the wiper from the retainer. 9. Remove snap ring (13) and bearing (14) from the rod. 10. Remove bolts (15) and head (16) from the cylinder body. 11. Remove O-ring seal (17) from the head. Remove snap ring (18) and the bearing from the head.Assemble Steering Cylinder (Servo-Sender)
1. Install the snap ring in one side of head (1).2. Use a piece of pipe (2) that is 4 in. (10.2 cm) long with a 11/4 in. (31.8 mm) outside diameter to install the bearing in the head until it is against the snap ring. Install the other snap ring to hold the bearing in place. 3. Install O-ring seal (3) on the head and put clean oil on the O-ring seal. Install the head on the cylinder as shown. 4. Install the snap ring in one side of rod (4). Use pipe (2) to install the bearing in the other side of the rod until it is against the snap ring. Install the other snap ring to hold the bearing in place. 5. Use tooling (A) to install wiper (5) in retainer (6) with the lip out. 6. Use tooling (A) to install packing (7) in head (8) with the opening in the packing toward the cylinder bore when the head is installed.7. Install the O-ring seal