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790 Block Heater

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Kevin K
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Posts: 1
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2000-11-14          21491

I put a block heater in my 790, it was plesantly easy to do. There is a drain cock on the injector pump side of the block for draining coolant, slid a hose on to it to drain the block with out a mess. The exhaust manifold side has a 1"NPT plug that can be removed and replaced with the heater. The plug has thread locker on it so I first warmed the engine by letting it run for about 10 min., then drained the warm (not hot) coolant, put a propane torch on the plug for about 30 seconds and the plug unscrewed easily. I didnt even burn the paint off the block. The heater I used (TEMRO #3100003) screwed right in with some thread sealer - no leaks. The dealer wanted $160 to supply and istall a heater, I did it for about $30.

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790 Block Heater

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DanaT
Join Date: Jun 1999
Posts: 138 Clay Center,Ks
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2000-11-14          21507

Where did you get your block heater? I just put one on my 855,jd heater $55 with tax. sounds like there the same heater. ....

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790 Block Heater

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Kevin K
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Posts: 1
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2000-11-16          21560

The one I have is the same one the dealer installed on his 790 (except he burnt the paint around the NPT plug). I got mine right from Phillips & Temro, in the USA call 1-800-328-6108 or 952-941-9700, in Canada 204-667-2260. ....

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790 Block Heater

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Damrockfarm
Join Date: Dec 2016
Posts: 2 Amsterdam, NY
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2016-12-16          195995

I have a 2005 790 that I want to put a heater on. Do I need the JD OEM adapter kit to go with it? I'm not even sure what it's for, but a few other forums I have seen have mentioned it.
....

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