TC25D parking brake

[deepsnow]

Had a little brain fart, backed out of the garage down the drive couple hundred feet with the parking brake engaged. Was in 4wd pushing some slush/wet snow with the 3pt blade. Seemed a little sluggish. Took a look at the dash. RPMs were fine brake light was on. Not absolutely sure but it seems my parking brake has less bite. Anyone know how steep a grade TC25Ds can be safely parked on? Anyone have any experience in adjusting the parking brake? Or have I worn enough brake "pad" that more than an adjustment will be necessary? Has anyone purchased a NH repair/maintenance manual? If so, what did you pay & was it worth the$$?

 

[Soundguy]

Not sure how this measures up, but I have accidentially backed my nh 1920 off of my trailer with the p-brake engaged.... seemed a bit sluggish.. but pushed right through the brake. My brakes are new. I also have a little yanmar 1700 tractor and have backed it out of the barn with it's parking brake on.. same effect.

What this tells me is that tractors are very powerfull, and something as simple as a p-brake isn't going to hold up to the engine at regular engine speeds. Considdering a tractor is little more than a drivetrain with a seat electrical, and a hydropump.

Chris

 

[RoyJackson]

Brain farts are pretty common this time of year...

Doesn't the Operator's Manual that came with your machine tell ya how to adjust the parking brake?

My 670's book does...

 

[jinman]

Noel, if you look under your tractor, you should see brake actuator rods going from the pedal to the brake actuator arms located near your rear axle. You adjust the brakes by loosening a locknut and adjusting the other nut that changes (shortens) the length of the actuator rod. Rotate one side about 1 turn and do the same on the other side (right side/left side). It's important to adjust both pedals so that the pedal depression matches when you have them locked together. When you finish adjustment, be sure to tighten the locknuts. This is the way it is on most tractors...I am not referring to a TC25 manual, but my TC45 is that way.

Are you sure you need to adjust the brakes? Can you engage the brake so the tractor won't move? I don't think one "B-F" should cause the brakes to wear that much. /w3tcompact/icons/hmm.gif

 

[mikim]

I've done that with my TC45 -- to help keep the b-farts down I added a piece of brass tubing to the little rod that sticks up out of my deck that I need to kick off - so it's in the way and hard to forget./w3tcompact/icons/hmm.gif
mike

 

[Mosey]

You probably didn't wear enough pad off to matter, but it wouldn't hurt to readjust it like JimI said. Mine got to where they had a lot of play in the pedal at about 100 hours and I tightened them up so there's about 1/2" of play. The tractor has a lot of power, so it doesn’t surprise me that it can overpower the brakes.

I did a stupid thing with a Jeep I had once. I had it parked in about 3” of water and it froze overnight. When I went to drive it out, it wouldn’t move and I stalled the engine, so I put it in 4WD low range to improve the gearing and forced it out. I thought it was just stuck in the ice and forgot that I had the parking brake on. It bent the brake shoes and levers inside the drum and I had to replace everything!

 

[deepsnow]

jinman, thanks for the info. On flat terrain I think the parking brake holds the tractor. In neutral with loader bucket and rear blade down the tractor didn't move. Have to check out the parking brake function on a light grade next time out.

 

[jinman]

Now that's using your head./w3tcompact/icons/clever.gif/w3tcompact/icons/grin.gif

 

[OverlyRun]

Doesn't pressing the brake pedal for any reason disengage the parking brake? When starting my TC 35 I put my foot on the brake (and the clutch) and this always disengages the parking brake. This must be a habit formed starting cars I guess...Glad to learn how to adjust the brakes though!!

 

[jinman]

Noel, my description oif how to adjust your brakes was from memory and it turns out to be slightly incorrect. I mentioned loosening the locknut and then I said to adjust the nut which shortened the length of the actuator rod. Actually, all you have to do is to turn the actuator rod. The rod is threaded on each end and the clevis's on each end have a captive nut inside. This morning I read my repair manual for my tractor and realized I had given you slightly incorrect info. If you want me to download an illustration, I will, but my tractor might be slightly different from yours. I'm pretty sure it's the same principle though.