STEERING CONTROL UNIT REBUILD
Disassembly
The steering control unit is a precision unit manufac-
tured to close tolerances, therefore complete cleanli-
ness is a must when handling the valve assembly.
Work in a clean area and use lint free wiping materials
or dry compressed air. Clean type C-4 hydraulic oil
should be used during reassembly to insure initial
lubrication.
1. Allow oil to drain from valve ports.
2. Match mark gear wheel set and end cover to
insure proper relocation during reassembly. Re-
fer to Figure 5-4.
3. Remove end cover capscrews and washers. Re-
move capscrew with rolled pin (3, Figure 5-4).
Mark hole location of capscrew with rolled pin on
end cover to facilitate reassembly.
FIGURE 5-2. STEERING CONTROL UNIT
1. Brake valve
2. Steering Control Unit
3. “LS” Port Hose
4. “L” Port Hose
5. “T” Port Hose
6. “P” Port Hose
7. “R” Port Hose
FIGURE 5-3. VALVE PORT IDENTIFICATION
1. Steering Control Valve
“T” - Return to Tank
“P” - Supply from Pump
“L” - Left Steering
“R” - Right Steering
“LS” - Load Sensing
FIGURE 5-4. MARKING VALVE COMPONENTS
1. Valve Assembly
2. Match Marks
3. Capscrew With
Rolled Pin
4. End Cover
L5-2 Steering Control Unit L05021
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