CONTROLLER AS 5531107 - Caterpillar

The above illustration displays the main control valve 90 degrees differently than it will appear in the unit. This is done to show all of the valves at in one illustration, their exact placement and arrangement in relation to the manifold. Side (A) of the manifold is the bottom and the side which is bolted to the machine. Refer to the next illustration for an exact representation of the control valve. 1. The travel valve is (1). The boom valve is (2). The swing valve is valve (3). The stabilizer valve is (4). The bucket valve is (5). The stick valve is (6). The auxiliary valve is (7). 2. Place alignment marks on the valve and the manifold prior to removal.3. Identify, remove and plug four hydraulic lines (8) from the auxiliary valve (7). 4. Remove four bolts (9) and remove valve (7). All valves can be removed in an identical manner as shown above. It may be desirable on the stabilize valve (4) and the travel valve (1) to identify, remove and plug some of the hydraulic lines above these valves to allow sufficient work room. Install in reverse order.Disassemble And Assemble Main Hydraulic Control Valve
Keep all parts clean from contaminants. Contaminants put into the system may cause rapid wear and shortened component life.
Start By:a. remove main hydraulic control valve For disassembly and assembly purposes, all of the valves are extremely similar in their construction, parts and configuration. Two of the seven main control valves will be disassembled and assembled. Similarities and differences will be noted.1. Disassemble the swing valve as follows: a. Remove the torque converter plate from the swing valve. The swing valve is the only main control valve that has a torque converter plate as an addition to the valve.b. Remove two plugs (1). Remove spring seat (16), spring (14) and ball (15). Remove manifold assembly (2) from one side of the torque converter plate housing. Remove small O-ring (3) from the surface of the plate housing (4). Remove plug (7), remove spring seat (6), spring (5), and spring seat (8) from the plate housing. Remove three large O-rings from the surface of the plate housing (4). Remove small O-ring (10) from the surface of the plate. Remove valve (11). Remove plug (12) and cartridge (13). c. Remove seven O-rings (17) from swing valve housing (18). Remove four bolts, two from both ends and remove two valve covers (20). d. Remove O-ring (24), washer (23), spring (22) and spring seat (21) from each end of the valve.e. Remove spool (25) from housing (18). It is not necessary to mark this spool. The spool is identical on both ends and can be assembled in either direction. f. Remove valve (28) and two O-rings (27) and (26) from valve housing (18).2. Disassemble the auxiliary valve as follows: a. Remove five O-rings (1) from valve housing (2). b. Remove four bolts (3), two from each valve cover, and remove valve cover (4). c. Remove O-ring (9),