350 Broken foot brake linkage

bobdoss · Post by **bobdoss** » Wed Jul 13, 2016 3:40 pm

The other day I pushed really hard on the foot brake pedal. I heard a loud noise and the pedal dropped to the floor. As expected, the steering brakes still work, but I have no foot brake at all.

The brake rod from the pedal to the clutch housing is intact, and moves when I move the foot brake pedal by hand. I ASSume something inside the clutch housing is broken (return spring??) but don't know how to get access to find out.

I couldn't find a diagram in the online Parts Catalog, nor in the Service Manual. Does anyone know:

1. Where I can find a diagram of the foot brake linkage
2. How I can get access to the brake rod after it enters the clutch housing

jtrichard · Post by **jtrichard** » Wed Jul 13, 2016 10:29 pm

COULD BE item #10 below .... broken brake rod part number AT18568 .... BUT more likely one of the clevis pins (item #7 below) fell out of the end of that rod .... IF almost anything else broke you would still have ONE side brake

http://jdpc.deere.com/pimages/T118/T118 ... 1JAN94.gif

StxRancher · Post by **StxRancher** » Fri Jul 15, 2016 8:16 am

I had exact same problem on my 450c, it was #10, a broken rod near the threads.

bobdoss · Post by **bobdoss** » Fri Jul 15, 2016 11:20 am

Thanks for the diagram - exactly what I was looking for. It looks like it's from the online parts catalog, but I never found it.

I pulled up the floorboard and I can see item 10 and item 18 on the right side moving. I didn't pay attention to item 18 on the left side but will look again today.

Item 18 on the right side appears to be working correctly when it disappears into the steering clutch housing. I can't see where it ends by looking from the top down past tivhe steering linkage. I may have to pull the final drive to see where the linkage connects to the brakes but I certainly don't want to do that if you have any better suggestions.

It seems like there should be some way to access the end of that linkage at the break bands without pulling the final drive. But maybe I'm being too optimistic

jtrichard · Post by **jtrichard** » Fri Jul 15, 2016 1:58 pm

YES its from online parts

http://jdpc.deere.com/jdpc/servlet/com. ... ervlet_Alt

You have to go to #35 - TRANSMISSION, DIFFERENTIAL, CLUTCH HOUSING AND BELT PULLEY ..... AND THEN #8 BRAKE PEDAL AND SHAFT

bobdoss · Post by **bobdoss** » Sat Jul 16, 2016 9:14 am

No wonder I couldn't find it! Who'da thunk you had to start with "transmission" to find "brake"

After clearing out leaves and junk from the top of the clutch housing, I discovered that you can see the end of the brake rod below the steering clutch/brake linkage.

The clevis on the end of my right side brake rod is broken. I guess I'll have to remove all of the sreering clutch/brake linkage to get to it. But it's much better than pulling the final drive.

Thanks for your help and for finding the diagram for me.

jtrichard · Post by **jtrichard** » Sat Jul 16, 2016 9:21 am

Something must be wrong with the left side also for the pedal to "DROP to the floor"

Stan Disbrow · Post by **Stan Disbrow** » Sat Jul 16, 2016 9:42 am

Hi,

Or the issue is prior to the common shaft....

Obviously the brake parts inside the steering clutch housing must be ok as they brake using the sticks....

Stan

bobdoss · Post by **bobdoss** » Sat Jul 16, 2016 10:15 am

I haven't looked close at the left side yet but I do see the rod (Item #18) moving in and out of the clutch housing. I suspect the rod is not adjusted correctly at the common shaft, thus allowing the pedal to "drop to the floor". I'll look at it closer on Monday.

As for the linkage inside the clutch housing, the steering brake linkage appears to be independent of the foot brake linkage. That would explain why I have steering brakes and not foot brakes.

I need to adjust the steering linkage anyway, so I will first remove anything that's blocking my view of the clevis at the end of the foot brake rod. If I'm correct, I'll need to replace the rod from the common shaft back into the clutch housing (Item #18).

I'll also need to figure out why the left rod is moving, but not engaging the left brake.

I'll post my results on Monday.

Stan Disbrow · Post by **Stan Disbrow** » Sat Jul 16, 2016 5:00 pm

Hi,

I can't think that you busted something inside both steering housings for the foot brakes - at the same time.

However, may be that one side was already out and you have been foot braking using only one side - and that suddenly let go.

If so, then I can see how you would have all the common bits for the foot brake still be ok yet not have one side worth of foot braking.

It will be a bummer if you do have foot brake related failure inside of both steering clutch housings.

How do you feel about using both sticks at once for braking?

Stan

CuttingEdge · Post by **CuttingEdge** » Sat Jul 16, 2016 5:39 pm

Brakes; I thought that was what the blade was for? (Joke)

While I have only owned my dozer for a few months now, I think I might have hit the foot brake once since I owned it. Granted I do not own land that is steep in nature or that sort of thing either though.

When I was just a kid (10 years old) I used to operate our old John Deere 1010 cutting wood by using just the sticks. That was because I was too short to push in the foot clutch. I would pull back on the sticks to stop, often times putting my feet on the dash as I pulled back.

Stan Disbrow · Post by **Stan Disbrow** » Sat Jul 16, 2016 6:17 pm

Hi,

Well, the 420c (at the very least) was advertised as having a standard Live PTO - by virtue of yanking both sticks back.

Try that variant of a Live PTO on a wheel tractor!

Stan

bobdoss · Post by **bobdoss** » Sat Jul 16, 2016 9:07 pm

My land is VERY steep, and I've had my first 350 run away on me multiple times, including once backwards.

That's an experience I never want to repeat

I'll do whatever it takes to get the foot brake working again.

Stan Disbrow · Post by **Stan Disbrow** » Sun Jul 17, 2016 4:45 am

Hi,

My place back in NY was on top of a mountain. It was very steep in any direction.

Cuttingedge says (joke) about using the blade, but that actually is a far better brake than the ones on either a 420 or a 350. That works better than anything else, forward or backwards, as I well know.

Stan

CuttingEdge · Post by **CuttingEdge** » Sun Jul 17, 2016 1:22 pm

My worst runaway was on a 666 Clark Skidder. I dropped down over this hill backwards to get a twitch of wood. It was steep, and it did not have brakes, so I kept backing up easy like, then dropping it forward to keep my speed in check. That worked until it stalled the skidder and backwards I went until... boom...I hit a tree. That jarred the nogging and the old skidder.

Another time, same skidder...I was roading it from one area to another along back roads. I had it in high gear and thought I knew the road well enough, but was closer to the bridge than I thought...or at least where I thought there was a bridge. I would like to say I Dukes-Of-Hazarded it across the stream with all four tires off the ground, but that would be a lie...it was a skidder afterall. Be that as it may, the bridge was still gone so I dropped down over the embankment and crashed through the ice! I honestly hit so hard I thought I drove the fan through the radiator. It didn't, but then I had to drop down into working range and try to climb up the other side. I had to use the blade to bust the ice up as I went just to climb the other side.

JDcrawlers Messageboard

350 Broken foot brake linkage

350 Broken foot brake linkage

Who is online