Page 3 of 3 FirstFirst 123
Results 31 to 43 of 43

Thread: Best older D8??

  1. #31
    Senior Member
    Join Date
    Jan 2010
    Location
    Louisiana
    Posts
    106
    One more question. Where is the weight on the D8K vs the D8H. I can't seem to find the extra 10,000 + lbs in a comparable D8K; It must be hiding in there somewhere.

  2. #32
    Senior Member
    Join Date
    Jan 2008
    Location
    Wi
    Posts
    1,174
    Were there actually more D8K's built than D8H's? I thought that the H's were the highest number as it was built for I believe 12 years? Somebody please correct me if I am wrong.

  3. #33
    Senior Member DPete's Avatar
    Join Date
    Feb 2007
    Location
    Central Ca.
    Posts
    1,460
    Quote Originally Posted by Greg View Post
    Were there actually more D8K's built than D8H's? I thought that the H's were the highest number as it was built for I believe 12 years? Somebody please correct me if I am wrong.
    You are correct, D8H 46A to serial # 34086 - D8K 77V to #18848

  4. #34
    Senior Member JDOFMEMI's Avatar
    Join Date
    Jan 2007
    Location
    SoCal
    Posts
    2,596
    Quote Originally Posted by JASON M View Post
    One more question. Where is the weight on the D8K vs the D8H. I can't seem to find the extra 10,000 + lbs in a comparable D8K; It must be hiding in there somewhere.
    Jason

    I could be wrong, but if you are looking at operating weights in the cat performance handbook, I believe the weight listed for the H is for a tractor with an "S" blade and a drawbar, while the weight listed for the K includes a multishank ripper with one shank. That would explain the "missing" 10,000#

    If I remember correctly, the D-8K's we had were about 2-3,000# heavier than the H, and they were each comperably equipped.
    Jerry

  5. #35
    Senior Member
    Join Date
    Jan 2010
    Location
    Louisiana
    Posts
    106
    Y'all sure 'bout the production #' of the 8K vs the 8H........? As long as I can get parts, it's not a deal breaker.


    So, I guess, Jerry, that the (2) machines are very comparable, weight-wise? I sure hope they are. A 4-bbl ripper rack is worth 8,000 lbs and I think your analogy is correct. That could be.

  6. #36
    Senior Member 2stickbill's Avatar
    Join Date
    Nov 2009
    Location
    Romayor Texas
    Posts
    677
    Quote Originally Posted by JASON M View Post
    Y'all sure 'bout the production #' of the 8K vs the 8H........? As long as I can get parts, it's not a deal breaker.


    So, I guess, Jerry, that the (2) machines are very comparable, weight-wise? I sure hope they are. A 4-bbl ripper rack is worth 8,000 lbs and I think your analogy is correct. That could be.
    You can get parts for them and older machines.The K had more HP used more fuel but give faster production faster.
    Cat,5X4 and a good cigar now we're hauling
    And my overload permit starts after sunset.

  7. #37
    Site Sponsor AmerIndependent's Avatar
    Join Date
    Nov 2009
    Location
    Riverside, CA
    Posts
    358
    Jason M,

    This is a pretty good site for weight and miscellaneous Cat information: http://www.ironrecord.com/

    I looked at the weight difference between the D8K and D8H and it's showing closer to 20,000 lbs difference depending on serial #. I don't know if it's correct or not. You might want to check it out for yourself, it's got some good information on there.

    Congrats on your purchase by the way!
    Your heavy equipment powertrain specialists.
    Please visit:
    www.AmericanIndependentInc.com

  8. #38
    Senior Member
    Join Date
    Jan 2010
    Location
    Louisiana
    Posts
    106
    These eqt wts are starting to get to me. I've got a D9G (66A) with an inside C-frame, push-cushion blade (CU type) and the factory rear counterweights installed. The Cat Perf Handbook lists the weight at 68,500 lbs. When I bought it years ago, I remember telling my lowboy driver to just go pick it up, no big deal. After he got his triple-axle detach under it, binded it down, and started lugging on it, he knew something amiss. He called me via cell ph and told me that the load was much more than 68,000 lbs and wanted to stop at a set of Cat scales at a truck stop and ck it. I remember him telling me "a little over 90,000 lbs"...............
    So, just because I'm interested today, and not very busy right now, I weighed the dozer on my "in-house" 100,000 lb scale. It weighed 94,000 lbs, exactly. It is apparent that Caterpillar issued that weight by tractor only; no blade and no rear attachment. So, I am deducing that the front blade weight at about 10,000 lbs and the rear counterweights at the difference.... in this case.... about 15,000 lbs. I think this is how they (Cat) arrived at their published #'s.
    Now, I also weighed my Cat D6R LGP series II, w/ rear Paccar 56 winch installed. It weighed a cool 53,000 lbs. The book weights according to Ironclad, include the ser # prefix, in this case, mine was prefixed ADE. Well that narrows the machine identification. They give the base weight at 45,600 lbs. The Cat Perf handbook lists the weight of the Paccar 56 winch at 3600 lbs, w/ cable on the drum, making a combined weight of 49,200 lbs total machine weight........... still not close enough for me.
    Anybody know for sure, how eqt weights are arrived? As far as I'm concerned, the only way to get closer than a 10% weight estimate is by weighing the machine yourself.

  9. #39
    Site Sponsor AmerIndependent's Avatar
    Join Date
    Nov 2009
    Location
    Riverside, CA
    Posts
    358
    I have no idea where those weights are derived from but since we don't have a 100,000 lbs capacity scale, we've always trusted the websites.

    Though we may never know where they come up with the weights, because of Jason M, we will now know they are not accurate. Haha. Thank you good sir for your efforts!
    Your heavy equipment powertrain specialists.
    Please visit:
    www.AmericanIndependentInc.com

  10. #40
    Senior Member
    Join Date
    Jan 2010
    Location
    Louisiana
    Posts
    106
    Well, you are welcome. I'm the son of (3) generations of Professional Engineers; but I'm not an engineer. Anyway, it was always taught to me that "Everything can be explained".......... that is the root of my curiosity.

    Now, I'm really interested in weighing the old Cat D8H w/ the ripper-rack and Full-U blade, when it gets here next week. I'll report back its exact weight too. I've always subscribed to weight and horsepower to get the job done..... Now we're going to try to measure it; at least the weight of it. I don't have a dyno for the horsepower; we'll just have to see how she spins the tracks in 2nd gear.

  11. #41
    Senior Member alan627b's Avatar
    Join Date
    Nov 2006
    Location
    Omaha Nebraska
    Posts
    775
    Jason, when you get it home and washed, make sure to take some pics and post them here for the rest of us...if your 8 has a full U blade, I would imagine there is quite a bit more metal in the it compared to either the S or A blades.
    Just don't let the DOT catch you...!
    alan627b
    Sample pics found here...
    http://www.mylittlesalesman.com/fron...pillar&mod=d8h
    Lotsa meat in a full U...
    http://www.hwequipment.com/attachmen...lade-AT447-126
    Anybody besides me think the louvered upper grill looks badder than the regular one with holes?
    Attached Images Attached Images  
    Last edited by alan627b; 01-20-2010 at 11:00 PM.
    Retro Grading, We Do Modern Jobs With Antique Machinery"

  12. #42
    Senior Member
    Join Date
    Jan 2010
    Location
    Louisiana
    Posts
    106
    I think so too..... there's alot of steel in the blade section..... extremely thick, comparatively; the selling party agreed to take it off for shipment; good move, I think. Blade really conjures up images of WARHORSES.

    So, we'll end up w/ (2) loads to La.

  13. #43
    Member
    Join Date
    Apr 2008
    Location
    south east of England
    Posts
    52

    D8k

    Quote Originally Posted by JASON M View Post

    BTW: Further research indicates that a few of the D8H's, maybe the last 2000 manufactured utilized the pinned equalizer bar arrangement, tying the track frames together. Anybody know if that is a valid improvement? or just a change, like the elevated sprocket, high drive machines?
    Hi Jason, with the improved pinned equalizer bar its easier to remove
    the track frame for final drive repairs,after splitting the track and
    removing the top roller and lock down bolt,jack up tractor out of the
    roller frame and just move it forward,but on the earlier H model the
    frame has to be pulled out of the equalizer bar away from the tractor
    before sliding forward,we still run six K,s and two H,s,good luck with
    your new machine
    RB

Page 3 of 3 FirstFirst 123

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •