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Thread: D7 3t thermoids

  1. #1
    Join Date
    Oct 2017
    Posts
    29

    Default D7 3t thermoids

    Hi just picked up a new to me d7 today runs decent. Started tearing into it and the thermoids are all but gone. Where can I get them or what is my options. I thought about making my own. Iíve heard of nylon being used as well instead of belt material. Thnks for the help.
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  2. #2
    Join Date
    Sep 2009
    Location
    Asotin, Wa
    Posts
    2,151

    Default

    I got mine from Cat when I did my 7M. They werenít too bad as I remember. Itís a bear to do by yourself, but check your engine/transmission alignment while youíre in there. Could be the reason the old ones were shot. Good luck with your project

    BP.
    Holt 45 power unit, Two Ton, Sixty (2), Diesel 40, No.11 AutoPatrol, 4G D4, 9U D6, 17R D6C, 9G D7, 7M D7, DW20.

  3. #3
    Join Date
    Aug 2012
    Location
    Southbrook Queensland Australia
    Posts
    837

    Default

    I would have thought your machine should have a oil clutch.

  4. #4
    Join Date
    Mar 2016
    Location
    Mankato, MN
    Posts
    230

    Default

    The oil clutch started with 3T23647 so this machine was built just a bit before that.

  5. #5
    Join Date
    Oct 2017
    Posts
    29

    Default

    I wish it did have the oil clutch. Be a whole lot nicer for clearing timber. Does anyone have the part number for the thermoids by chance? Gonna call cat and see if they can get them today. Thnks.

  6. #6
    Join Date
    Nov 2007
    Location
    NW Ohio
    Posts
    3,930

    Default

    9F3358 link assembly changes to 394-0207 $63.12 each from Cat

  7. #7
    Join Date
    Oct 2017
    Posts
    29

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    You da man! Thnks! Got them ordered today supposed to have them in 3 days! Will keep you updated to progress! Thanks again!

  8. #8
    Join Date
    Nov 2007
    Location
    NW Ohio
    Posts
    3,930

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    Quote Originally Posted by Moparnut88 View Post
    You da man! Thnks! Got them ordered today supposed to have them in 3 days! Will keep you updated to progress! Thanks again!
    Your welcome! Take it easy on them trees and stumps, those are clutch busters, lol

  9. #9
    Join Date
    Apr 2012
    Location
    Moose Lake, MN, USA
    Posts
    3,584

    Default

    Did Cat recommended that the thermoids be installed to push instead of pull on the D7s as they did on the D8s?
    1937 Cat #11 tandem auto patrol,diesel, w/plow and wing, 6K506SP, 1937 RD 4 Ag Crawler RD5356, 1939 Cat 22 2F5429, 1952 Model 212 Grader 9T03427, 1953 2U D8 Dozer 2U20751, 1961 922A Rubber Tired Loader, 59A812, LeTouneau LS Cable Scraper, Cat/Lincoln 600 AMP Dual Welder, DW-21 Cat Scraper, DW-10 dump wagon/water wagon

  10. #10
    Join Date
    Oct 2017
    Posts
    29

    Default

    No they didnít. I had read that the d8 has them that way. What is the general thought on putting them to push instead of pull? Last longer?

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