rear wheel locking up

[bob hamelin]

hello,i have a 1970 jd 644 loader and my right wheel is sticking real bad.i nwas told it is brakes and that it will cost 5000 dollars because it is internal.i am in desperate need to get my machine working with or without brakes.does anyone have advise on how to either disconnect or how to fix myself.we just opened up scrap yard and put life savings into it.i just need a little advice.thank you bob hamelin 401-651-2391 uxbridge mass.

 

[tim s]

It's probably the brake failing,or the diierential locking up the diff problem would show up more while turning tight, don't continue to run it,,it will only get worse..

 

[ben brown]

bob. i dont see any reason you couldn;t block off the rear brake lines and see if that helps.the brake are located inside the diffrental housing. axle has to be removed to repair.

 

[buickanddeere]

If somebody has added ordinary gear lube or trans/hydraulic oil that doesn't say "wet clutch compatible" on the container. Then all the brakes and clutches friction material are softening and flaking off.
You maybe lucky and are just dealing with worn out brakes.
Any strange hydraulic sounds, vibrations, surging etc?
Does the locking occur randomly or only when the brakes are applied?


http://jdpc.deere.com/jdpc/servlet/com.deere.u90490.partscatalog.view.servlets.HomePageServlet_Alt

1 R90085 BRAKE SHOE 6 -XXXXXX (A) (SUB FOR R26969, THIS APPLICATION)
R90086 BRAKE SHOE 6 -XXXXXX (A) (SUB FOR R26765, THIS APPLICATION) (USED WHEN AR32243 WITH LARGE FACING HAS BEEN INSTALLED AS A REPLACEMENT)
2 D2593R RIVET 36 -XXXXXX
3 R708R RIVET 18 -XXXXXX
4A AR54699 PLATE 2 -XXXXXX (A) (MARKED R50586)
4B AR66749 BRAKE DISK 2 XXXXXX- (A) WITH FACING, (MARKED R40153, R59931 OR R79409)
5 R78430 BRAKE DISK 2 (SUB FOR R48476 AND R45781)
6 D1761R RIVET 36 -XXXXXX
7 R90085 BRAKE SHOE 6 -XXXXXX (A) (SUB FOR R26969, THIS APPLICATION)
R90086 BRAKE SHOE 6 -XXXXXX (A) (SUB FOR R26765, THIS APPLICATION) (USED WHEN AR32243 WITH LARGE FACING HAS BEEN INSTALLED AS A REPLACEMENT)
KEY PART NO. PART NAME QTY SERIAL NO. REMARKS
8A AR32243 PLATE 6 -XXXXXX (A) (MARKED R33529)
8B AR66750 PLATE 6 XXXXXX- (A) WITH FACING, (MARKED R33529)
9 R42225 PISTON 6
10 R26973 WASHER 6
11 F1056R O-RING 6


(A) SUB RE46332 (MARKED R97786), RE46328 (MARKED R97002) AND R85708, UNLESS PREVIOUSLY INSTALLED.

 

[johns48jdb]

never use valvoline oil in anything. it will eat the fibers up as said earlier. i wouldn't want to drive a front end loader without brakes. think what you might tear up if you can't stop when your loading something for somebody or backing up with a load on the bucket. no short cuts are worth not being safe over. if you have the equipment to work on it, you can do this yourself. i put some in my ih 574 once out in the yard. i did have the use of a wench that i had mounted on a trailer. it looked like the back half of a wrecker and the wench was hand cranked. saved my butt more than once.

 

[buickanddeere]

The factory has oversize replacement brake pads.
You may get lucky and get away with just a fresh set of oversize pads if the disk isn't ruined by the worn brake pad's steel backing.
Price the pads and disk at the dealer, the price maybe quit reasonable for pads alone. And the disk if expensive maybe salavagable if the grooves are polished smooth.
As previously stated. Doing nothing or driving without proper brakes will cost more than a brake job done now.

 

[JDemaris]

I would not automatically assume the brakes are the problem. Do it chatter and does your pedal pulsate? Does it sometimes roll OK?

Yes, for sure there can be internal brake problems. But, those 544 and 644s put a heck of a beating on the final drives. Are you sure you don't have a outboard plantary hanging up? I had fix many, on site, at junkyards and saw mills.
All it takes if for the one lock tab to fall off the centerbolt, and you've got big problems.

 

[John Heine]

Does it move ok until you apply brakes?Raise machine up see if maybe a axle bearing out.Is there oil in axle?I doubt if brake will lock up axle.I seen them grind disk, pads,anything else and never lock up axle.