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Old 22-09-2016, 06:15   #1
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Any one installed gearbox oil cooler on a ZF10 (foely/dr. Diesel)

Has any one installed a oil cooler for their Hurth ZF10 ? Ive gone through one and it gets really hot.

Did it work?



The kit is $300 and bolts to the side of the GB. Foley says Hurth uprates it to the same torque of the ZF15.


It runs on raw water. I was thinking about running the raw water from the strainer to the oil cooler and then to the water pump">raw water pump on the motor. Any thoughts?


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Old 22-09-2016, 16:14   #2
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Any one installed gearbox oil cooler on a ZF10 (foely/dr. Diesel)

We have one on ours. It's plumbed through the raw water cooling system... I've always assumed that all the ZF10/15 came with them and are plumbed the same way. I would probably not run without a cooler given our long motoring days on the ICW.


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Old 22-09-2016, 18:26   #3
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Re: Any one installed gearbox oil cooler on a ZF10 (foely/dr. Diesel)

The "cooler" supplied by ZF is a simple heat sink. After my 2nd failure I changed to a bigger gear. Read the ratings very carefully and check your shaft alignment.

I was getting 230 F+ readings on the zf10. After repowering I chose a PRM Rated at twice the continuous HP and cannot get it to heat above 130 F.

ZF bought Hurth and both thought you were just going to the bouy's to race.
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