350C track tensioners/ radiator hose questions

freesoul · Post by **freesoul** » Mon Jun 15, 2015 12:02 pm

Greets, I am becoming responsible for one that is used on family farm and I have a few questions.

Where do I locate the serial number to find the exact model? Its a diesel.

How do the track tensioners work when they are working correctly? On this one when you put grease in them it just squirts out the seal at the piston and doesn't hold the tracks tight- there has been some rebar welded to hold them apart far enough to use. What is involved in rebuilding these?

The lower radiator hose has a crack in it, under normal idle it is fine but as soon as you start working it, it starts loosing coolant. I can't even see the clamp where it goes into the radiator, how is it accessed from below or from the side panel?

I don't know how to post photos here. https://goo.gl/photos/1x9UbjW7wGfphzt98

Thanks!

[/img]

Scottyb · Post by **Scottyb** » Mon Jun 15, 2015 10:11 pm

I looked at your photo and there is little to no adjustment left in that track. As well as adjusters it looks like you will likely need new track chains. The pins wear and the track gets longer. Take some closer photos of the undercarriage and we will be able to tell you more. The 350c is a nice crawler and is easy to get parts for.
Scott

Scottyb · Post by **Scottyb** » Mon Jun 15, 2015 10:22 pm

On that rad hose, the whole nose tips forward. It is heavy so be extra careful. You have to remove bolts at the lower front first. look it over carefully before you start !

Stan Disbrow · Post by **Stan Disbrow** » Tue Jun 16, 2015 4:56 am

Hi,

The serial number tag is on the upper front of the seat frame, behind your leg when you are sitting on the machine. There is another tag on the loader frame but that is just for the loader (because the loader or bulldozer are attachments to the crawler).

It is probably not a 350C. People always seem to use 350C decals on 350 and 350B machines. There are significant differences between the B and the C, such as going from dry to wet steering clutches.

When you find the s/n, you need this link:

http://www.jdcrawlers.com/messageboard/ ... php?t=2410

This one helps understanding u/c wear:

http://www.tpaktopc.net/files/undrcarguide.pdf

Stan

srs_mn · Post by **srs_mn** » Tue Jun 16, 2015 8:45 pm

I agree withStan... It's not a 350C; the loader linkage is completely different from the (probable) straight 350 shown in your picture.

Post by **Lavoy** » Wed Jun 17, 2015 9:32 am

Not hard to rebuild, you will need to take them apart to see which style seal you have, but that is it. It is also possible that you have them out so far that the seal is getting to the edge of the barrel, then a seal will not help.
Lavoy

Stan Disbrow · Post by **Stan Disbrow** » Wed Jun 17, 2015 2:11 pm

Hi,

And, they look like they are out that far, too. If so, then that means it is time for a u/c renewal. And, loaders wear everything faster than dozers, so a renewal is probably all the track parts, not just the pins and bushings in the chains....

Stan

freesoul · Post by **freesoul** » Mon Jun 22, 2015 10:10 am

I put some more photos in this album, no idea what I am looking at.

The seat is not original and has no tag on it

https://photos.google.com/album/AF1QipO ... z-br_uEoeT

Stan Disbrow · Post by **Stan Disbrow** » Mon Jun 22, 2015 12:24 pm

Hi,

I can't see the photos via that link. It requires signing in....

Stan

freesoul · Post by **freesoul** » Mon Jun 22, 2015 12:48 pm

sorry try this one

https://goo.gl/photos/DYA8dx2dGjg4WxFr6

jtrichard · Post by **jtrichard** » Mon Jun 22, 2015 2:00 pm

HI SITTING down? Undercarriage report....NO bushings left... pins also bad... rail height so/so... lower rollers are starting to hit the pin bosses (rail and roller wear) upper rollers are about gone .... sprockets are wore (just from track stretch at least) diagnosis start looking for new/used undercarriage until then run the crap out of it

Stan Disbrow · Post by **Stan Disbrow** » Mon Jun 22, 2015 4:06 pm

Hi,

Yeah, the rails are all the way to...gone. As are the sprockets. And, the front idler looks pretty well gone, too. Can't see the rollers, but I have to say that their wear surfaces have to be to the point where you just put in ten new ones. This would be why the tensioners blow out the grease and need bars to hold them out far enough that the rails don't flop right off onto the ground.

Stan

freesoul · Post by **freesoul** » Sat Jul 04, 2015 5:11 pm

thank you for the replies. How hard/expensive is it to come by a new/used undercarriage?

Post by **Lavoy** » Sun Jul 05, 2015 10:23 am

Not terrible to come by, sometimes supply is sporadic. Off the cuff guess for what you need, in the $4500 range for new rails, pads, sprockets, rollers, upper idlers. Not sure on front idlers, last price I had on them was utterly stupid.
Lavoy

JWB Contracting · Post by **JWB Contracting** » Sun Jul 05, 2015 6:52 pm

Last quote we received was 1,100 per idler. This is about double from a couple years ago. I have stopped selling used idlers in case we need them on out own machines or rebuild projects.

The rest of the undercarriage components are very reasonable in my opinion.

JDcrawlers Messageboard

350C track tensioners/ radiator hose questions

350C track tensioners/ radiator hose questions

Idlers ridiculous, the rest is reasonable

Who is online