8274 Diagram

[TLC76]

I was dragging my brother's 3/4 ton GMC diesel with a 28' toyhauler attached up a muddy hill, and although the winch never stopped, some retaining ring must have broken as the entire brake assembly, shaft and internal gears came out the side of the case. I'm looking for a clean parts diagram, the ones I've found online are pretty rough and it's hard to see the small parts. Mine is one of the earlier serial numbers.

One otther thin this winch does is that the freespool knob will slowly work its way out while winching, any ideas on what might cause that?

On a sidenote the amsteel sythetic line held up nicely.

 

[Foreigner]

This is the parts list/diagram for the M8274-50 which is just the upgraded version, AFAIK. Has some differences, but it's the best I've got.

http://www.warn.com/truck/ReplacementParts/parts/225/37492F3.pdf

 

[TLC76]

That's great, I must have snapped the #23 retaining ring. Time to clean everything up and add drain and fill plugs while I'm at it.

 

[1911]

Are these any better than what you already have?

http://warnserviceparts.com/m8274.asp

If you scroll down, they have several different diagrams for different vintages (series of serial numbers).

 

[TLC76]

Foreigner posted a very nice clean one that I can actually read, the one you posted is nice because it links to the parts. This weekend I'll pull it apart and make sure I really need a new retaining plate and it didn't just shift somehow.

 

[1911]

Foreigner is a good guy, and smart too! (he knows what uilleann pipes are.)

 

[climber8483]

Here's some pics of the brake getting put back together

http://www.pirate4x4.com/tech/billavista/8274/
He tears apart at step 25 and puts it back together at step 48.

Here are some pics of when I just did it. I used 2 larger welding magnets to hold the bearings in place while pressing it all back together.

THERE ARE 21 bearings. You probably lost some.

With the outer case and bearings removed. You can see how the frictions disk go on the older 8274

Ratchet plate removed. That collar is supposed to slide freely, there is a spring under there that helps release the friction when not braking.

My ratcheting plate is made in Japan!

Using the magnets to hold the bearings in place. I decided not to use any grease like Billavista did since it's not sealed and I didn't need dirt getting stuck in there adding extra wear.

Good luck with the repair this weekend. Hope that helps,

Brittain

 

[Foreigner]

Foreigner is a good guy, and smart too! (he knows what uilleann pipes are.)

I'm just good at the internet

 

[TLC76]

As a follow up on this, somehow the plate which retains the brake/gear assembly ended up working it's way over and off the shaft, which allowed the assembly to slide out the side. There was no damage to any components, all I can figure is it wasn't installed correctly previously as I can't imagine it getting out of position if it was put in right.