Ed's 77 Terex 72-41

[Nige]

Liquid wrench. I take it you've gone off the idea of using heat on the wheels..?

 

[mountainguyed67]

Heat never was my idea, someone else suggested it. My tractor mechanic friend said we won’t use heat, he’s favoring pushing from the frame with a hydraulic jack. We’ll try pushing with the bucket first.

 

[mountainguyed67]

Had to tighten the nut a little more to get the plate to line up, then put a shortened transfer punch into one of the threaded holes and hit the plate. There’s enough play in the fit over the hex that I didn’t try to transfer the second hole, I’ll do it by dimension. I brought it back home to drill.
Had to tighten the nut a little more to get the plate to line up, then put a shortened transfer punch into one of the threaded holes and hit the plate. There is enough play in the fit over the hex that I did not try to transfer the second hole, I will do it by dimension. I brought it back home to drill.

 

[mountainguyed67]

Replaced the copper air line, the plumbing department at the hardware made it up for me. I don’t have a flaring tool, and neither did he. So he just used a coupler, it works. I routed it different on the bottom. Not on purpose, I forgot. It’s more exposed this way, but I won’t be driving in tall brush anyway.

 

[sawmilleng]

I always thought copper tubing and mobile equipment didn't mix well...vibration can crack it quite quickly. Especially if there are long spans between supports.

Jon.

 

[mountainguyed67]

It’s common to use copper tubing on air compressors, they make too much heat for a hose. They put just enough to get past the high heat, then couple to a hose.

 

[mountainguyed67]

Got both front wheels off, digging in with the bucket broke them loose. I left two bolts on each to keep things under control. With the tripod set away from the wheel, it just pulled the one leg closer to the wheel. So I would pull the third leg back, and the wheel would come with it. Had to repeat a few times. Two of us were able to lift the planetary housing off, but not the drum and hub assembly. Too heavy, used the tripod for that too. Plus it kept from dragging the hub over the spindle threads, didn’t even touch it.

 

[Birken Vogt]

How are the 3 pipes fastened together at the top there?

 

[mountainguyed67]

A chain through rings welded to the top of the pipe. That picture wouldn’t load...

 

[Birken Vogt]

Now I see it, it took you telling me though. The busy lines of the cedar tree kind of camouflage it.

 

[sawmilleng]

Gee, those brakes dont look in bad shape at all. Did you blow them off before taking the photo?
Looks like you lucked out on this corner, at least!

Jon.

 

[mountainguyed67]

The brakes before cleaning, the inside of the wheel cylinders were pretty nasty. Two wheel cylinders honed good, the other two were too pitted. Already replaced with new ones that came with the machine. One of the springs that keeps the adjuster in place was broken and brazed too, otherwise all’s good. I found a place that has the adjuster spring already, haven’t ordered yet though.

Yeah I guess I shouldn’t have put a cleaned up picture yet, doh! Out of order.

 

[Nige]

I didn't read whether you were planning on replacing the brake shoes but those look like they would clean up OK if they were boiled up with some laundry detergent in a big enough bucket. Just don't do it on the wife's stove .......

 

[mountainguyed67]

The brakes are already back together and ready for use in the first brake picture I posted.

Here’s a picture showing how we got the drum/hub assembly off.

 

[mountainguyed67]

The planetary housing before cleaning it, we put everything back together clean. I’m told planetaries are used to handle the torque better.


The drive flange installed, I think that’s what they call it. You can also see the pins we made to make installing the planetary housing easier, they’re pointed. We got one planetary hole on there, and it held the weight while we got the other holes and planetary gears aligned.


This pic shows the torque wrench, had to make a spindle nut socket, it wasn’t available anymore. Welded an 1-5/16” socket to a plate with pins in it. It calls for 600 ft lbs, then set to 25 lbs rolling torque. Rolling torque was already there at 600 ft lbs, had to use the 9 foot cheater pipe to get the torque.

 

[mountainguyed67]

Here’s the spindle nut tool. Not pretty, but it worked!

 

[mountainguyed67]

Before we put the drums back on, we put a chain around each brake shoe, and bled the brakes. This way we would know if the wheel cylinders were leaking, and take care of it first. They bled good. So we'll have brakes now, woohoo! But first we killed three hours trying to figure out why we didn’t have anything happening up front, we weren’t getting air to the front power cluster. Last time we worked on the air component of the brakes, we had an air brake mechanic (mutual friend) helping us. He told us to tie the relay back in, me and my mechanic friend that usually helps me had bypassed it. Well the last thing we checked this time was the air, so it took three hours and five minutes to get something happening up front. Doh!! I think we would have got the brakes adjusted and the wheels back on otherwise, we’ll have to do it later now. It won’t be long before the snow keeps me from working on it for a few months, I at least want to get the wheels back on and move it away from the standing dead trees before that happens.

 

[mountainguyed67]

The wheel cylinders were also used on International trucks, so they are still readily available.

 

[petepilot]

something like this will give you 2000 ft lbs either way if you have to get into any more of the big stuff

 

[mountainguyed67]

1” drive?

The one we used is 3/4 drive, and belongs to a friend. I’ve been looking for one at a reasonable price.