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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

Cat D5 96J Brakes and clutches

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Nathan Stone

12-28-2005 06:53:12




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Bob,

I need to ask for more know-how. When I'm backing uphill I can disengage my right clutch and the back of the tractor will steer right without any brake, however when I disengage the left clutch the left track continues to turn and the tractor doesn't want to turn without brake. I assume this indicates the left clutch is dragging? Is this something I might be able to adjust? Also my left brake wants to 'grab' when applied, would this indicate that the band is worn, drum scored and I may have metal to metal contact?

Does CAT still print repair manuals for a machine of this vintage? (1972)

I'm a mechanical engineer by profession but new to track crawlers so please excuse my ignorance here.

All advise is much appreciated.

Nathan Stone in Tennessee

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Bob/Ont

12-28-2005 09:04:15




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 Re: Cat D5 96J Brakes and clutches in reply to Nathan Stone, 12-28-2005 06:53:12  
Nathan I think you could buy a manual from Cat or one from this site here. The Cat manuals have cleared pic's though but expensive. You need a bunch of modules, Engine, Powertrain and Vehicle Systems. Each of them are broken down into 3 more Spec's, Disasembley and Assembley, Testing and Adjusting. It is normal on your tractor to travel straight when pulling a steering lever unless you have a good load on the machine. If you can steer, things are likely okay. Depends how steep that hill is I guess.To check how your clutch adjustment it, Pull back both steering levers, apply the brakes to stop machine and leave it in gear. The machine should stay stopped. Then let out one lever slowly untill it starts moving that track. Repeat with other lever and compare what happens. They should start moving the tracks about mid travel. If you can steer right without the brake under little load, the RH brake may be dragging. Try traveling fast on level ground and kicking trans out of gear and see how free it rolls. The LH brake drum May have a rusty spot. If it has a bad problem it will grind.
Later Bob

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Nathan Stone

12-28-2005 13:30:06




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 Re: Cat D5 96J Brakes and clutches in reply to Bob/Ont, 12-28-2005 09:04:15  
Bob,

Now that you've suggested that the right brake may be dragging, things are starting to make sense. I noticed when last using the tractor that the right brake seemed to fade after working a while. No doubt it is dragging and heating up, causing it to fade. I'll check things out with the tests you proposed in your last post and see if I can free up the right brake linkage.

Thanks for the tips. I'm sure I'll be back with more questions.

Nathan Stone

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Bob/Ont

12-28-2005 15:05:51




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 Re: Cat D5 96J Brakes and clutches in reply to Nathan Stone, 12-28-2005 13:30:06  
Nathan, you may have to knock out a few linkage pins and clean them up to get everything free but it's worth it. After you do that tighten up the brake bands as tight as you can then back them off 1 1/2 to 2 turns. There are support bolts under the brake bands with lock nuts on them if you have dry clutches. If you can turn them tighten them up tight and back them off a turn then tighten the lock nuts. Make sure the peddals are free on their shafts too. They have roller bearings in them and get full of dirt. If they move ratchety you might want to knock out the shafts out and clean things up good and grease the bearings so they move nice too. I will look for something more on linkage adjustment.
Later Bob

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