I have a TD-8 that the hydraulic system whines and is slow. Stated doing this after I rebuilt lift cylinders that were

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Customer: I have a TD-8 that the hydraulic system whines and is slow. Stated doing this after I rebuilt lift cylinders that were k
JA: Sometimes things that you think will be really complicated end up being easy to fix. The Heavy Equipment Mechanic I'm going to connect you with knows all the tricks and shortcuts.
Customer: leaking and also replaced all hyd lines
JA: Are you fixing this yourself? What have you tried so far?
Customer: Looking for suggestions
JA: Anything else you want the equipment mechanic to know before I connect you?
Customer: Nothing I know of
Answered by Daniel Wilson in 3 hours 4 years ago
Daniel Wilson
Auto Mechanic

20,010 satisfied customers

Specialities include: Auto Body Technician, Heavy Equipment Repairs, Heavy Duty Engine Repairs, Brake and Transmission Repairs

Hi,My name is***** will be glad to help. We can follow up as needed on here, Give me some time to review your information and follow up with my responses. Professionals are not employees of the site but help on here as time allows in between jobs, family, etc.. Response time will vary depending on my work load , etc.Feel free to respond back at anytime if for any reason we seem to get separated, for status, etc.

By chance do you have the full model with any letters or numbers after the TD eight and your serial number?

No not at moment it is a TD-8 Dresser Dozer from mid 1980s I'm told. Do not have manuals on it but looking to get them
Has 6-way blade

The symptoms you describe are a sign of cavitation from the system be an air bound however if it remains consistent and does not come out of it after you run the functions and work the air out of the system then it means either you are still sucking air possibly from the suction side of the pump or the pump cavitation did and because of its age or condition is on its way to failure. Usually when the pump start getting louder and the functions operate slow it means the pump is tired. Check inside the hydraulic filter for fine metal or debris that would confirm a pump failure occurring. If the pump is producing metal it is advised to not run the machine to further any contamination through your circuit and components. The components and system will need to be thoroughly cleaned out and flushed if found before running a new pump or replacement component. If there is no metal found I recommend having the pressures tested and confirmed whether they are in factory specs as even if the pump is not producing metal if it is weak then it would be still time for replacement. Please take a moment to rate my answers as that is how the site credits my time helping on the site. Five star ratings and bonuses are always greatly appreciated.

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Daniel Wilson
20,010 satisfied customers
Auto Mechanic
Daniel Wilson
Auto Mechanic

20,010 satisfied customers



Licensed mechanics

31,131 satisfied customers

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