I have a cat excavator E120b ser.# 6jf00046 Does any one have a schematic with the functions of the row of solenoids in front of the hydrualic pump? I know the first one is for the track 2 speed ....and basically i was wondering if each track has a seperate solenoid for the 2 speed because the right track changes between 1st and second when it is avtivated by itself, when both are avtivated the right track speeds up to 2nd speed with the left one. the left track never changes and is always in high speed thanks
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ok got it ....yes i have 24v to that solenoid but only one track works in slow speed....and weirdly it is opposite that what shows on the switch
What actually makes the track motor actually spin faster but with less torque
It's all in one document regarding the operation of the implement/travel hydraulic system.
thanks for your help….I was able to track the problem to a leak in the swivel joint. With the help of those amazing pdfs. The leak was between the right track and high speed pressure. Causing the motors to be in high speed as soon as the right track was activated Thanks a lot