CAT 140H Motor Grader Differential lock system and Braking system Failure

Описание

CAT 140H Motor Grader
Customer complain about the the Differential lock function and Braking system (service brake)
Differential lock solenoid power not reach the solenoid.
Service brake light all the time on, and brake air pressure indicator light always on which mean the pressure is below specified value (90 psi), and the left brake pressure gague not working.
Allways remember to do walk around the machine and visual inspection before any test.