• Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!

973C straight drive in reverse

pittsburgh cat man

Senior Member
Joined
Oct 20, 2024
Messages
1,123
Location
saltsburg pa
Question for you if you are traveling with out pushing either steering pedals and you push the center pedal part way do you get the hydraulic noise you mentioned before when you pushed the steering pedals??
 

BRHol

Member
Joined
Jul 25, 2024
Messages
14
Location
Netherlands
Question for you if you are traveling with out pushing either steering pedals and you push the center pedal part way do you get the hydraulic noise you mentioned before when you pushed the steering pedals??
the machine slows down when pushing central pedal and stops when fully pushed. When fully pushed there's a sound of oil flowing through overpressure but nor really a noise. not unusual
The sound is not the same as i mentioned before. That was more like crunching or squeaking
 

BRHol

Member
Joined
Jul 25, 2024
Messages
14
Location
Netherlands
Hereby an update. The main problem is solved. The 2 pressure sensors of the drive motors were swapped. the sensor of the left drivemotor was reacting on the right steering pedal. The pressure signal from the drivemotor did not match with the expected value, that caused the fault codes.
I switched the two connectors and the problem was solved.
Thanks everyone for thinking an advices. It really helped!

When I was making a test drive, I sometimes hear some hydraulic noise/groan coming from under the cab when making a forward right turn. it's just like the drivepump or drivemotor is not well adjusted. It's not constant or always but sometimes and mostly when switch from neutral to forward drive or switching from reverse to forward drive. Is that normal? Or has it maybe something to do with the Right Forward Steering Valve?
 
Top