• Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!

Help Inspecting Undercarriage - 977H

B

bulletpruf

Well-Known Member
Fellas -

I just picked up a 977H. The price was right (free), so I didn't worry to much about condition of the undercarriage. From what I'm seeing, it doesn't look bad, but would anyone care to take a look at the pics to tell me what you see?

FYI - one of the sprockets has bolt on segments, the other doesn't.

Thanks,

Scott
 

Attachments

  • IMG_1302.jpg
    IMG_1302.jpg
    4.9 MB · Views: 34
  • IMG_1303.jpg
    IMG_1303.jpg
    4.3 MB · Views: 34
  • IMG_1305.jpg
    IMG_1305.jpg
    3.9 MB · Views: 32
  • IMG_1306.jpg
    IMG_1306.jpg
    4.6 MB · Views: 33
B

bulletpruf

Well-Known Member
More pics...
 

Attachments

  • IMG_1308.jpg
    IMG_1308.jpg
    4 MB · Views: 22
  • IMG_1309.jpg
    IMG_1309.jpg
    3.9 MB · Views: 20
  • IMG_1310.jpg
    IMG_1310.jpg
    4.9 MB · Views: 21
  • IMG_1349.jpg
    IMG_1349.jpg
    4.1 MB · Views: 22
Nige

Nige

Senior Member
Idlers & carrier rollers both worn out (running surface deeply scalloped)
Track shoe grousers worn down to bolt head level = worn out
Marks on the track link bosses indicate that the track rollers are worn out. The track links are hitting the roller flanges
Track link running surfaces scalloped.
Sprocket teeth are not completely worn out but neither are they anywhere close to "as new" condition.

The only photos missing in your album are of the track link bushes but if they are in a similar condition to the rest of the U/C I would expect them also to be well-worn.
 
Last edited:
B

bulletpruf

Well-Known Member
Nige said:
Idlers & carrier rollers both worn out (running surface deeply scalloped)
Track shoe grousers worn down to bolt head level = worn out
Marks on the track link bosses indicate that the track rollers are worn out. The track links are hitting the roller flanges
Track link running surfaces scalloped.
Sprocket teeth are not completely worn out but neither are they anywhere close to "as new" condition.

The only photos missing in your album are of the track lin bushes but if they are in a similar condition as the rest of th eU/C I would expect them also to be well-worn.
Click to expand...

Ok, thanks for the details.
 
B

bulletpruf

Well-Known Member
sawmilleng said:
Just to add to the long list by Nige: the idlers look to be as far forward as they can go, suggesting the internal track link bushings are worn as well.

Does it run?

Jon.
Click to expand...

Ok, thanks.

Yes, it runs great. Hydraulics are fine. Steering is so-so. Steers fine to the right, but not so great to the left.
 
I

IceHole

Senior Member
Plenty of life in it. I've run stuff so worn the sprockets just had nubs
Not like running it is going to ruin anything that isn't already worn.

I forget, if it's D6 or D7 that uses same tracks. 8" pitch i think.
 
B

bulletpruf

Well-Known Member
IceHole said:
Plenty of life in it. I've run stuff so worn the sprockets just had nubs
Not like running it is going to ruin anything that isn't already worn.

I forget, if it's D6 or D7 that uses same tracks. 8" pitch i think.
Click to expand...

I believe the 977H undercarriage is based on a D7. How do you measure pitch?

Thanks
 
W

Welder Dave

Senior Member
New undercarriage shouldn't be a problem but the cost would be. I'd guess well North of $10K for a 977 and maybe as much as $20K if everything is needed and it kind of looks like that. Maybe could find some decent used tracks. In the mean time you could run it as is. Just be prepared for the tracks to come off.
 
B

bulletpruf

Well-Known Member
Welder Dave said:
New undercarriage shouldn't be a problem but the cost would be. I'd guess well North of $10K for a 977 and maybe as much as $20K if everything is needed and it kind of looks like that. Maybe could find some decent used tracks. In the mean time you could run it as is. Just be prepared for the tracks to come off.
Click to expand...

The machine won't be used a lot, so running it as-is isn't a bad plan.

Thanks
 
nicky 68a

nicky 68a

Senior Member
There’s one thing running a dozer on an undercarriage as worn as the 977,and another thing running a traxcavator on those old tracks.
I would think spragging with a full bucket would rip things off very quickly on that machine
 
You must log in or register to reply here.
Top