CIRCUIT BREAKER AS 4448345 - Caterpillar

Machine Preparation
Reference: Refer to the Testing and Adjusting section of Service Manual, KENR9935, "General Information" to view information regarding the machine preparation.Reference: Refer to the Testing and Adjusting section of the Service Manual, KENR9935, "Visual Inspection" to view information regarding the machine preparation.
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View (A) of control manifold (B).
Locate test port (C) which is located on a hydraulic tube forward of the control manifold (B) and close to the RH front frame rail in front of the RH front suspension cylinder.
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Attach tooling (B) to test port (C).
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Locate steering piston pump (D).
Locate pressure and flow compensator valve (E) on steering piston pump (D).High Pressure Cutoff Valve
Start the engine.
Operate the engine at HI IDLE. Turn the steering wheel to the right or turn the steering wheel to the left until the steering cylinder stop is reached. Then, continue turning the steering wheel against the stop. Hold the steering wheel in this position for 3 seconds and then release the steering wheel. Continue this step until the oil in the steering system reaches at least 38 °C (100 °F) to 93 °C (200 °F).
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Locate pressure tap (C).Note: The pressure gauge needs to withstand the maximum pressure from the steering piston pump.
Operate the engine at HI IDLE. Turn the wheels to the right or the left until the steering cylinder stop is reached. Check the pressure while turning the steering wheel against the stop. The pressure setting of the high-pressure cutoff valve at zero flow is 21200 700 kPa (3075 102 psi).
If the pressure needs to be adjusted, stop the engine.
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Remove cap (4) from setscrew (5) on high-pressure cutoff valve (6).
Loosen locknut (3) of high-pressure cutoff valve (6).
With an allen wrench, rotate setscrew