Author Topic: clark Ranger 664C leaking fluid (Read 595 times)

treesmasher123 · « **on:** July 29, 2020, 12:00:42 PM »

Hello everyone , this is my first post. I have a Clark Ranger 664C and it started pushing transmission fluid out around the breather on the torque. Does any one have any thoughts what would cause this to happen.

kiko · « **Reply #1 on:** July 29, 2020, 09:47:24 PM »

Does your 664c have a divorced converter? If so there is a drain hose from the converter to transmission housing that could be kinked or blocked. Also transmission pump could be leaking through the shaft seal making the volume to great to drain as it would normally .

treesmasher123 · « **Reply #2 on:** July 30, 2020, 10:45:19 AM »

Thanks Kiko I'll check on the return line. I just rebuilt the torque and put a new charge pump on the old girl . It was leaking a little bit before but now it's leaking worse. half a gallon every couple of days.

kiko · « **Reply #3 on:** August 01, 2020, 10:13:05 PM »

The seal ring set under the stator would be another source of internal converter leakage. Some of the Clark convertors that stator seal was a two piece seal that had a spring of sorts under the seal to keep it expanded.

treesmasher123 · « **Reply #4 on:** March 21, 2021, 05:19:18 PM »

I replaced the vent on top of the torque with a brand new vent and it is still pushing fluid out of the vent. Any one have any ideas what could cause this. the old girl still works decently well but not like it should. Any input would greatly be appreciated

lshobie · « **Reply #5 on:** March 24, 2021, 08:11:06 PM »

There is a filter inside the hydraulic tank...a really bugger to get at. Mine was doing that...changed that filter and good to go.

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