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Replacing brakes on an 1981 TD-7E

Silvereagle34 ยท 2014-08-15 10:04

I am looking at a TD-7E and the brakes are not working. How expensive of a fix and how hard are they to replace? Thanks

Replies12
  1. #1Silvereagle342014-08-23 16:51

    No one ever had to replace them?

  2. #2Iron@Dirt2014-08-23 19:11

    ON the td9h you can get some break adjustment thru the final drive, but the brake pads could be toasted.

  3. #3g_man2014-08-23 20:11

    Could be lots of things to cause that. If the seller didn't fix it it is probably best to assume it is expensive. Are both sides the exactly the same ? No brakes at all ? Do both the steering brakes and the foot brakes not work ? Or just the steering brakes ?

  4. #4Silvereagle342014-08-24 08:49

    The steering brakes work, the pedal ones don't. I can buy it cheaper if he dosen't fix. Just wonder how much trouble they were to replace. They may just need adjusting. Are they easy to adjust? Thanks!

  5. #5oarwhat2014-08-24 09:05

    Are you sure the steering brakes are working or is it just releasing the power to that track? Steering brakes and foot pedal brakes use the same pads. So if the steering brakes are actually working it's just an adjustment to get the pedal to work.

  6. #6Silvereagle342014-08-24 12:18

    How hard are they to adjust?

  7. #7g_man2014-08-24 18:19

    Like oarwhat said there is one set of brakes and be sure they really work. If you can turn on a dime with the steering brakes on both sides the brakes are probably good. Each steering brake is applied separately by hydraulics thru the steering levers or both sides are applied together mechanically with the foot pedal. There are two adjustments. One is at the top of rear drive which sets the disc backer spacing. If you look between the top front of the sprocket and the chain (11 o'clk on the left side) it is just above that little shelf you see. Could be buried in dirt. The second adjusts the pedal free play. It is under the floor boards. Copy and paste the pictures into your computer photo folder so you can enlarge and read them. This is the pedal assembly - keep in mind something might be broken in the linkage if just the foot brake doesn't work. The two big levers are in the rear frame. The cover is under the seat. Here are the adjustment procedures

  8. #8Silvereagle342014-08-24 21:45

    It will turn on a dime. Thanks for all the answers!

  9. #9Silvereagle342014-09-16 17:46

    G_man I went back and ran the dozer today. It wouldn't steer to the right pedal wouldn't work either. It appears to be adjusted all the way up. He said usually you had brakes for about an hour then they wouldn't work. When I pulled back on both levers the machine stopped. Do you have any ideas on what may be wrong?

  10. #10g_man2014-09-16 19:39

    It is pretty hard to tell what is going on. The first thing you need to do is preform the complete brake adjustment procedure. Then go thru the steering and braking functions in an organized maner to narrow down the problem. For example it may not turn right because 1- the brake is out of adjustment. 2- the brake is worn beyond adjustment range and needs replacement. 3- The right steering clutch does not release the right drive causing sever wear on the right brake. ( probably not this if it stops when both levers pulled back). 4- Hydraulic problem in steering circuit. Try going up a slight grade. Pull both levers back slightly to remove drive from both sides. You should start to roll straight back slowly. Pull one lever all the way back. You should stop with the one brake on that side. Release it, roll back and stop again with the other steering lever all the way back. Release both levers and start forward up hill again. If all that works your steering clutches and brakes are working at least a little.

  11. #11Silvereagle342014-09-17 18:32

    What kind of hydraulic problems could be in the steering? In past it seems that once oil has a chance to heat up the brakes go away. They would adjust them, thus I feel they have worn out the pad on the right side. My fear is that new brakes won't solve the problem if it's in the hydraulics.

  12. #12g_man2014-09-17 19:10

    When you pull the steering lever back you are moving a spool in a hydraulic valve. There is a hydraulic cylinder that releases the drive clutch and then applies the brakes. Just like any hydraulic circuit failures can occur. BUT - Have Adjusted The Brakes per the Manual. Until you do that you are shooting from the hip