Gearmatic 19 brake not holding quick fix?

[timbertrekker1022]

I just got my hands on a used Clark 664 for a little timber project. The winch works like a charm, but, man, that brake just won't hold when there's a load on it. The bands still have some life in them, the drum's looking clean, and the cylinder's been serviced, but it still slips when I try to hold it steady.

I'm not ready to dive into a full rebuild just yet, I really just need this thing to get through a few more loads. Any quick fixes or workarounds that could help me out?

 

[Definitely Maybe]

Based on what you provided, I think you could try shimming the actuator just a bit so you can get more pressure on the band. If you do just that, it might buy you some time. Also, check for any glaze on the drum and rough it up if needed.

 

[3choccake]

I just got my hands on a used Clark 664 for a little timber project. The winch works like a charm, but, man, that brake just won't hold when there's a load on it. The bands still have some life in them, the drum's looking clean, and the cylinder's been serviced, but it still slips when I try to hold it steady.

I'm not ready to dive into a full rebuild just yet, I really just need this thing to get through a few more loads. Any quick fixes or workarounds that could help me out?

You mentioned the drum looks clean, but check again for any signs of oil or hydraulic fluid contamination. Even a small leak from a seal could be getting onto the brake bands, causing them to lose all their friction under pressure. This is a common issue and can be tough to spot

 

[dogdad65]

@timbertrekker1022 just wanna add that you might also be able to get a little more life out of those bands with a simple adjustment.
The brake band system on these older winches usually has an adjustment point to tighten the band around the drum. Check your manual or look for the adjustment bolts.
Just a half turn on a bolt could be enough to give you the extra friction you need to hold a load for a while longer. Just be careful not to overtighten it and cause the bands to wear out even faster

 

[Zackhimselfx]

It's Been years, but between 2,3,4,&5 you'll get a slight bend. Used to have them work perfectly all day, then just stop holding the hitch up. Almost always what it was.. Hopefully that helps