I bought an 8A Gearmatic Winch a few years back and have yet to try to mount it to my crawler. I have a ’59 JD crawler. Looks like it should. I Have a gearmatic 8A and the parts book and operating manual. The manual also covers the 8G. I have been able to get parts from a local JD. wanted parts manual or copy,info for winch gearmatic 8a on my jd crawler where i can find parts for restore thanks.

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Take the cover off, and with a bright light you should see any leaks on the circuit brake or clutch that was under pressure. Bought a Timkin, it’s on its way. When I broke down my drum, it appears that I need a lock ring on the outboard bearing, and don’t on the inboard bearing.

I’ll probably take the cover off one last time and decrease the clutch gap a bit so that there is a bit more winch-in pull.

All the cover bolts were snapped off except 1. Once you get in the habit of going thru those motions Its not that bad at all.

When trying to remove the clutch spider, do not over tighten the jacking bolts. Thickness seemed to be perfect, with right amount of contact on gexrmatic shaft, but not too tight. Once the cable was off the drum, I started tapping on the drum with a ballpeen hammer to loosen things up, and the next thing I know, the drum was sliding off the inner bearing and off the main shaft.

Use copper washers in lieu of the fiber washers on both sides of the hydraulic gland.

The threads for the adjustment screw can get pretty buggered up and you may need to chase them from inside the casing rather than from outside at the bottom of the casing. Still thinking geafmatic the inboard bearing. Andrew, I like the coffee pot heater idea; I’ve used other ways to preheat bearings, but this one is easy and doesn’t require a lot of energy, and doesn’t over heat the bearing. So basically a 12″x8″x2.


Gearmatic 8a Winch Rebuild by Paul Buhler | Photobucket

Still would like to hear some of your thoughts as I wait for a new bearing – the inner one is still good, although not sealed. All the steel work i know of is out of china. Parts and restoration for antique and late model John Deere crawlers. Last edited by Paul Buhler on Mon Dec 12, The winch works great.

The bottom part goes up inside of it. I’ve looked around some for raw materials to machine, and I should exhaust that avenue before I go the casting route. There are paired alignment screws held with wires that center the bands over the clutch drum that you can’t see yet. I am glad that I could help you with with your rebuild, now get some logging chains and put some hooks on those log sliders and get it to work!!! No registered users and 14 guests.

I’ll do some homework. No registered users and 14 guests. Unless it is free, or you can get it for scrap value, walk away if you can not get the cover off. Waiting to re assemble when bearings arrive.

Good luck getting things cleaned up and free. Will the drum slide off the crown gear side bearing, or will the drum and bearing usually move as a unit? They let me make small molds if I want something made.

I need to pull the winch apart and see whats missing, i’m working on egarmatic a new cover, be aluminum but hopefully it should work. Going to try posting first to test for debug error. Leaking brake fluid contaminates the clutch and brake banding, and finds its way into bearings dissolving the grease which then leaches into places it shouldn’t be.


Easy on the gearmaric wrench. I’m finally ready to dig further into my winch.

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Also, suspect you know this trick, but use the pot warmer on a coffee maker to heat up your bearings so that they slide onto the shaft easily without cooking the bearing seals. It’s surprising how low a temp works to get this task done. It would pull the Queen Mary around if you could hold the down. On to the next phase To get the brake band off, remove the actuator located on top of the winch – it connects to the remote control lever that mounts on the fender, and you’ll have access to the top of the rod that Lavoy mentioned.

I’ll have to work on it in the winter, tried to get some parts off it and they are rusted solid, probly how they broke the cover. Christmas from me, But is at the moment on a pallet in my garage now thanks to a couple of friends.

It takes a long time and lots of penetrates and persuasion to free stuff up. IM beond the time in my life to learn this new stuff. It has an adhesive back and comes in a rectangular shape. The brake cylinder will run fluid down the push rod if it is leaking. I try to share part numbers when I can since it saves time.

Thank for the offer though Ray, if i could i would, damn border piss’s me off all the time.