flametamer
Well-Known Member
Posting for a friend:
We have a 1999 Cat 953C track loader with an attitude.
The history is: The engine was just rebuilt, which entails cab-off. After rebuild, the head shop which did the heads botched the job and the cab and engine came out again.
The problem is:
Now...the engine runs sweet. It's all hydrostatic and ECM controlled. At full throttle it takes off and then slows to a crawl in 30 ft. Engine still at full rpm. Bring the trans into neutral and it will again take off and slow down slowly to a crawl.
Now, if you keep the rpm 200 below the recommended operating setting (full rpm)....it works just fine, but lacks the governor response of the full throttle setting.
Cat has put their computer on the ECM and downloaded the data. Also two occurrences of low voltage, which was the battery going dead after sitting a while, which they said are not important. One weak track sensor was found and replaced. No difference. It has been operated for hours with the ECM on wireless and the laptop recording all data. Nothing shows up as the errors occur.
At this point they have given up on it. Cat has a unique form of doublespeak which really means "We are stumped, but give us all your money and we'll try to figure something out." (So BP-ish)
Has anyone dealt with or heard of a similar problem in any Cat hydrostatic drive systems?
We have a 1999 Cat 953C track loader with an attitude.
The history is: The engine was just rebuilt, which entails cab-off. After rebuild, the head shop which did the heads botched the job and the cab and engine came out again.
The problem is:
Now...the engine runs sweet. It's all hydrostatic and ECM controlled. At full throttle it takes off and then slows to a crawl in 30 ft. Engine still at full rpm. Bring the trans into neutral and it will again take off and slow down slowly to a crawl.
Now, if you keep the rpm 200 below the recommended operating setting (full rpm)....it works just fine, but lacks the governor response of the full throttle setting.
Cat has put their computer on the ECM and downloaded the data. Also two occurrences of low voltage, which was the battery going dead after sitting a while, which they said are not important. One weak track sensor was found and replaced. No difference. It has been operated for hours with the ECM on wireless and the laptop recording all data. Nothing shows up as the errors occur.
At this point they have given up on it. Cat has a unique form of doublespeak which really means "We are stumped, but give us all your money and we'll try to figure something out." (So BP-ish)
Has anyone dealt with or heard of a similar problem in any Cat hydrostatic drive systems?