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Thread: 212 Question

  1. #1
    Join Date
    May 2016
    Location
    Black Diamond WA
    Posts
    75

    Default 212 Question



    As I am lying under my 212 grader, adjusting/fabricating a power steering pump, it came to me:

    Has anyone ever pulled the pony engine changed it out to direct electric start and then used the pinion gear access to the flywheel and fabricated a connection point for a gear driven hydraulic pump? In my mind, it sounds feasible and reasonable, but before I start down a rabbit hole, I figured I would ask the question and hopefully people can punch holes in it before I get too far along thinking about it.
    I'm not afraid of hard work; I can lay down beside it anytime and take a nap.

  2. #2
    Join Date
    Nov 2006
    Location
    McBEE, SC
    Posts
    1,529

    Default

    Quote Originally Posted by jumbo View Post


    As I am lying under my 212 grader, adjusting/fabricating a power steering pump, it came to me:

    Has anyone ever pulled the pony engine changed it out to direct electric start and then used the pinion gear access to the flywheel and fabricated a connection point for a gear driven hydraulic pump? In my mind, it sounds feasible and reasonable, but before I start down a rabbit hole, I figured I would ask the question and hopefully people can punch holes in it before I get too far along thinking about it.
    It would make a terrible racket, need to stay greased & turn the pump like the devil.
    D2 5u & 3J
    212 9T
    RD4
    D4 7J & 7U
    R4 4G
    Gas 35's
    Diesel 35
    Diesel 40
    Gas 50's 5A
    Diesel 50 1E1755
    D 8800 power unit 9J 6113SP
    LeTourneau D4 tournapull/Q Carryall
    Letourneau D Carryall's
    LaPlant-Choate CAB-97

  3. #3
    Join Date
    Nov 2006
    Location
    Faunsdale, AL USA
    Posts
    3,213

    Default

    What he said!

    You are going about it the right way, the power shaft under the cab turns at engine rpm and can be easily ratioed up or down with pulley selection to run a hydraulic pump for the steering or on later models (12E for example) it direct drives a hydraulic control unit that mounts on the front of the cab so you can run a hydraulic side shift moldboard.
    D2-5J's, D6-9U's, D318 and D333 power units, 12E-99E grader, 922B & 944A wheel loaders, D330C generator set, DW20 water tanker and a bunch of Jersey cows to take care of in my spare time

  4. #4
    Join Date
    Mar 2017
    Location
    Oklahoma
    Posts
    194

    Default

    on my old 9K we took the power shaft off from under the cab and fabed one up with a pulley in the middle. then mounted a small hydraulic pump under the floor and plumbed it into a charlyn unit in the steering shaft above the frame in front of the operator. it worked great and made steering a one finger affair.

  5. #5
    Join Date
    Apr 2012
    Location
    Moose Lake, MN, USA
    Posts
    2,859

    Default

    The Behlin power steering unit I installed on my 212 has a belt pulley for the pump built into the front u-joint on the live shaft.
    1937 Cat #11 tandem auto patrol,diesel, w/plow and wing, 6K506SP, 1937 RD 4 Ag Crawler RD5356, 1939 Cat 22, 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

  6. #6
    Join Date
    May 2016
    Location
    Black Diamond WA
    Posts
    75

    Thumbs up

    Thanks for the insight. I will stick to my v-belt pulley on the power shaft under the cab. It is nice to have bad ideas shot down before I spend time and money on them..
    I'm not afraid of hard work; I can lay down beside it anytime and take a nap.

  7. #7
    Join Date
    Jul 2016
    Location
    Lancaster CA
    Posts
    244

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    Have a complete Belehn unit on a 9k cat 12 I am parting out. Have no idea in what shape. everything else is completely worn out on the machine
    Cat 12 grader, 8T running and restoring, Cat 12 grader 9K3585. parts machine, Adams leaning wheel Pull grader Mod # 28,

  8. #8
    Join Date
    Jul 2016
    Location
    Lancaster CA
    Posts
    244

    Default

    Anyone know how similar a 212 is to a 9k 12 where this pully and pump are mounted? I know very little about the 212.will my Belem pump and steering unit off my 12 fit his 212?
    Cat 12 grader, 8T running and restoring, Cat 12 grader 9K3585. parts machine, Adams leaning wheel Pull grader Mod # 28,

  9. #9
    Join Date
    Nov 2006
    Location
    Faunsdale, AL USA
    Posts
    3,213

    Default

    The 212 i had had a pulley that bolted to the universal joint yoke on the input shaft of the power control box. So the pump and reservoir or filter, (can't remember exactly which was on the pump itself) was under the floor of the cab. The only thing that might be different is the bolt pattern in the pulley.
    D2-5J's, D6-9U's, D318 and D333 power units, 12E-99E grader, 922B & 944A wheel loaders, D330C generator set, DW20 water tanker and a bunch of Jersey cows to take care of in my spare time

  10. #10
    Join Date
    May 2016
    Location
    Black Diamond WA
    Posts
    75

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    I have all the parts, and am now just troubleshooting why I don't have enough flow or pressure to drive the unit. My original question was driven more by the fact that it is easier for me to work standing alongside the grader than sitting under it. My tag line says it all.....
    I'm not afraid of hard work; I can lay down beside it anytime and take a nap.

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