JD 800 Windrower Question

MFan

Member
I have a follow-up question specifically about the JD 800 (or 830) windrower. As these are chain drive machines, what is the braking mechanism? I looked at the OM online and see that there is a park brake, but the OM made no mention of how you stop the machine while operating it. Do you reverse the direction of the chain drives to bring machine to a halt? Curious as to how it operates. Thanks.
 
They are a combination of belt and chain drive. Final drive is chain, intermediate is belt and small planetary for each wheel, primary drive off engine is variable belt. Levers actuate a planetary for forward and reverse and clutching for steering. The levers have a "notch" for the neutral position. This is for 800.

830 is a little different as it uses a steering wheel for minor steering adjustments and levers like the 800 for major turns.

Hard to remember all exactly as it has been 45+ years since last was around one.
 
The 800 also has the steering wheel for minor corners, levers for real turns and reverse.

I never looked how that all works, I'm sure I will need to learn someday when it fails....

For braking specifically I believe each planetary has a brake band on it; pullt he levers back and as it disengauges foreward motion it pulls in the brake bands; for reverse you actually are over riding/ sliding on the brake aren't you?

Paul
 
I had to replace the clutch/brake disc (whatever it is) on one of those once. Was borrowing a relatives to swath oats and it grenaded. Broke the chain, everything. I took one off of the neighbors parts machine and spent the better portion of the day working on it I'm the field.

I remember the drive chain being the worst part of it, simply because there were basically 2 access points and neither one was very friendly. No idea how a guy with sausage fingers could work on it,I was a teenager and had troubles working on it.

The guy we borrowed the machine from bought a few new parts to fix the one I took off and I did that on the bench later on. Probably still on the wall in our neighbors shed because he got rid of both of his machines shortly after.

Donovan from Wisconsin
 
I think the "brake bands" are actually stopping the external of the planetary and causes reverse. I don't think the machine actually had "normal' brakes...
 
Pull both steering levers straight back to stop...going beyond will put it into reverse. Move both levers to the side and you can lock them in the stopped position. Retract the variable speed drive lever as well.
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top