Block Heater on a JD990?

[mountain_man]

OK - I think I've found the answer. I had my local JD dealer show me on a 790 where the block heater goes. Look on the LEFT SIDE of the engine block in about the middle. You should find a large (1") pipe plug with a square opening for a breaker bar. It is a threaded opening where the heater module is screwed in. He did say you do need a good quality breaker bar/extension as the plug is VERY tight. You do NOT need to remove any freeze plugs.

On the 790 the spacer, 2 bolts and gasket are not used, just the threaded heater module.

Now get out there and get it done and send us a photo!

 

[Marko]

BWa ,

I do not have a 990 but a 4110. I installed a block heater last winter and it has work great. Machine starts just
like it does during the summer /forums/images/graemlins/smile.gif I have it on a timer and plug it in the night before I know I am going to use the
machine. I created a webpage for the install with all the part #'s and cost. I know this does not help you with
your 990 install , however the install steps should be some what the same and should give you a good idea of what
the outcome should look like.

http://24.34.89.194:90/

Good Luck

Mark

 

[BWa]

I did see the Pipe pug on the opporsite side of the engine , I guess we take another shot at it this week end , ....Nothing burns me more /forums/images/graemlins/mad.gif than to have the service / parts manual differant from what you have in front of you .... Again thanks all will try to get pictures , if I can get the wife to let me near the digital camera... /forums/images/graemlins/crazy.gif
Bill g.
/forums/images/graemlins/smile.gif

 

[BWa]

Well the heater is in , Boy ,,,,,,that was some fun , .... /forums/images/graemlins/shocked.gif
Who ever said that the plug was going to be in there tight was not kidding !!! /forums/images/graemlins/shocked.gif
I found the plug all right , of course it was on the opporsit side that the manual showed , got the 1/2' breaker bar and extention put it in the plug and ,grrrrrrrrrrrrrr, it no move ... /forums/images/graemlins/confused.gif,, got a 6' pipe slide on to bar and now it is easily loosened and unthread , ....earlier I had drained the fluid or so I thought, got a nice little flood of green fluid that I had to clean up /forums/images/graemlins/mad.gif, ... started the heater plug by hand threading in to the block ... Oops , no room for a wrench /forums/images/graemlins/blush.gif, need a socket, ,hmmm 35mm / or 1 3/8 ",, /forums/images/graemlins/shocked.gif I no got , so it is off to find one , a friend the tool man no go ,, so off to the local stores , Nappa , no ,,, Auto store , no ,,, local hardware , and they have everything ,,,no .... Lowes ,,no ,, Sears ,,,, Yup , but have you got money ,,,,,,,,,,, don't have it in 1/2" drive , 3/4" drive only and no adaptors , ..........$14.00 socket , extention bar $30.00 ,,,,breaker bar , cheap one $28.00 ........... time loss hunting and driving around for it 4.5 hours.....Wife would not let me have the camera ,,, so no pictures of the fun ,,, /forums/images/graemlins/frown.gif,
Well at least my friend went along for the ride and giggled at all this fun I was having ...gee I wonder if it works ? at least it is not leaking ...yet ...
Again thanks all for the help ...
Bill
the duck mechanic

 

[mountain_man]

Bill,
Thanks for the follow-up! 35mm or 1-3/8" socket needed is great info. I guess JD estimates 1/2 hour assuming you have all the required tools. Please see if you can convince your wife to take a picture of the completed install for future TBN'rs.
I take it your friend who giggles is not your wife? /forums/images/graemlins/confused.gif

Think how happy your engine will be when it's all warm and cozy... /forums/images/graemlins/smirk.gif

 

[BWa]

No giggles is not my wife ..lol ... He just has a strange sense of humor at times .. like myself ,....kind of like having the 3 stoogers as grange mechanics and it is not your tractor they a working on ... /forums/images/graemlins/shocked.gif /forums/images/graemlins/grin.gif
Bill G.

 

[johnbilt]

HI

Finally got around to installing my block heater. The previous info posted is correct. The plug is VERY tight, and a 1-3/8" socket will install the new heater plug very nicely.

I used my 3/4" drive ratchet with a 3 foot helper bar to remove the block plug. Incredibly tight !! Why on earth would they torque that plug so hard at the factory. I would be afraid of stripping or cracking the block.

I first put a bucket under the radiator drain and emtpied it. I still had to pull the block plug slowly as the remainder drained into the bucket below.

I have posted some pictures of the operation.

I also installed a transmission heater plug. It is a larger unit than the block heater. I just unscrewed the plug and immediately ( if not sooner) installed the heater. I only lost a small amount of trans fluid which I topped off at the filler. It is easier to access by removing the left rear wheel.

Good Luck
John

 

[johnbilt]

Photo of Starter and removal of !@@*!!@ Plug.

 

[johnbilt]

Final Install of Block Heater.

 

[johnbilt]

Picture of Transmission Heater