Cat D5 Track Issues

[l3cam]

Good day everyone!
Hope all is well and running well this summer!

I have 1990 Cat D5 high drive either with a final drive or rail issue. It looks to me like the final drive is bending down and the rail is moving closer to the drive. My question is has anyone seen something like this before and is it something I can fix or is it a major overhaul. Mechanics up north are a pretty penny... Any tips or suggestions would be greatly appreciated.

I attached a picture on both sides of the final drive the side that is damaged I can't fit a finger in between drive and rail.

Thanks

 

[Nige]

Pivot shaft bushes failed.

It's an LGP. Do you really need the low ground pressure feature, because that's one factor that could have contributed to the failure.

 

[l3cam]

Thanks for the quick response... no I don't need the lgp. Why does that contribute to the failure...Tracks to heavy?

Is this repair do able i have an old excavator to do the heavy work.

 

[Nige]

The width of the track gauge (wider than a standard machine) plus the wide pads puts far more strain on the pivot shaft on anything other than really soft ground. I really can't understand why people buy LGP tractors, run them in hard ground, and wonder why the undercarriage falls apart.

Is this repair do able i have an old excavator to do the heavy work.

Got a machine Serial Number.?

 

[JS430]

C&C Equipment on YouTube has some good videos on replacing the pivot shaft bushings and equalizer bar bushings. The videos are on a Deere but you'll get the idea.

 

[l3cam]

Right on ill check that out... thanks JS

 

[pittsburgh cat man]

My thought is you have more than a bushing failure I would say shaft is shot also. Shaft on those don't run all the way thru machine

 

[pittsburgh cat man]

Fyi At one time our machine shop used to weld the worn shafts up and re machine them

 

[Nige]

My thought is you have more than a bushing failure I would say shaft is shot also. Shaft on those don't run all the way thru machine

I was thinking the same thing, but was waiting for the machine Serial Number to look up some parts drawings so we can see exactly what the OP has under that yellow paint.

 

[l3cam]

Fyi At one time our machine shop used to weld the worn shafts up and re machine them

Thanks Pittsburgh.. if the shaft is worn would that mean everything else is worn out on that shaft like bearings, seals ext?

 

[l3cam]

I was thinking the same thing, but was waiting for the machine Serial Number to look up some parts drawings so we can see exactly what the OP has under that yellow paint.

Hey nige the serial number wore off or broke off. I can't find it not sure where the heck it is i thought it would be stamped in the metal some where.

 

[pittsburgh cat man]

There are only Two bushings and a rubber seal. As for the serial number should be stamped on rear of case winch might be covering it up

 

[Nige]

the serial number wore off or broke off.

If you can't find a Serial Number on the tractor is there one on the engine.? might be able to find the machine S/N from that.

 

[Nige]

There are only Two bushings and a rubber seal. As for the serial number should be stamped on rear of case winch might be covering it up

if the bushings have failed really bad there is the possibility that the bore in the track frame has been damaged.

 

[l3cam]

Right on fellas.. I'll check that out on the engine get back to you. Anyway you guys know the shaft diameter thickness how much can it be out before machining? If the shaft is bent is that leaning towards replacing?

 

[tctractors]

No doubt a bent Dead Shaft, the bushings might also be worn and the Track Frame journal might be damaged, behind the cap on the frame is another cap keeping the frame in place on the Dead Shaft it will possibly have lots of bolts snapped off, you will need to fit a new shaft the Ting Tong ones are O.K. and about 1/4 the price of CAT.

 

[Nige]

I'll check that out on the engine get back to you.

I'm betting it will be 12Zxxxxx, probably somewhere around 37000.

 

[l3cam]

No doubt a bent Dead Shaft, the bushings might also be worn and the Track Frame journal might be damaged, behind the cap on the frame is another cap keeping the frame in place on the Dead Shaft it will possibly have lots of bolts snapped off, you will need to fit a new shaft the Ting Tong ones are O.K. and about 1/4 the price of CAT.

Thanks TC for the info...these ting Tong shafts can you steer me in the right direction where to find those?

 

[l3cam]

I'm betting it will be 12Zxxxxx, probably somewhere around 37000.

Hey nige will this serial number work looks like the trans?

 

[Nige]

Hey nige will this serial number work looks like the trans?

Took a bit of searching but yes. Transmission S/N 1RE1710 was installed in a D5H tractor Serial Number 1DD00563, built in early January 1988. So the tractor is a couple of years older than you thought it was. The engine Serial Number should be 12Z24354. See attached.

Thanks TC for the info...these ting Tong shafts can you steer me in the right direction where to find those?

What it takes is to first find the machine Serial Number (see above) which then leads to the appropriate parts diagrams for that particular machine and to the P/N of the Pivot (Dead) Shaft - 8G-5797. See the second attachment that contains all the Part Numbers for the RH track frame and pivot assembly.

With the 8G-5797 Pivot shaft P/N you can now start searching for aftermarket "Ting Tong" equivalents.

The third attachment is the Removal & installation instructions. This is not an easy task. For a start it will need the push arms/blade removed, then the track has to be split. Be prepared for problems removing the end pin of the Equalizer Bar (Steps 3, 4, & 5).