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950 wheel loader

Discussion in 'Wheel Loaders' started by Thesteeleboy, May 23, 2019.

  1. Thesteeleboy

    Thesteeleboy Active Member

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    I just purchased a 950 loader, serial# 81J8902. I assume it would be considered a 950c but am just basing that on the look of the machine. Can anyone tell me how to tell the approximate year and if it is a 950c or something else.
     
  2. DB2

    DB2 Senior Member

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    Cat never made a 950C. 950B came out in around 1984 followed by the 950E. Yours is a straight 950. Someone will post the year.

    Do you have any pictures?
     
  3. Mother Deuce

    Mother Deuce Senior Member

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    Congrats on your 81J purchase. In my experience that machine wears just a little bit better than the average anvil. They were definitely one of Cats better ideas!
     
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  4. DB2

    DB2 Senior Member

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    Yes I will second that sentiment.
    Brakes could be problematic but the rest was bullet proof.
     
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  5. Thesteeleboy

    Thesteeleboy Active Member

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    Is there something on the brakes I should check soon? They seemed to work real smooth.
     
  6. Thesteeleboy

    Thesteeleboy Active Member

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    The new 950 cat.jpg
     
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  7. Thesteeleboy

    Thesteeleboy Active Member

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    This is our recent The new 950 cat #3.jpg purchase. Cant wait to get it home.
     

    Attached Files:

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  8. Welder Dave

    Welder Dave Senior Member

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    It appears to be a fairly early 1976 according to the little booklet I have.
     
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  9. DB2

    DB2 Senior Member

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    Keep an eye on the fluid level and drain the air tank once in a while.
    There may be one reservoir for both master cylinders or they may fill separately. Seems to me there was an indicator on the air chamber that indicated travel and therefore brake pad wear.

    Would help to get an operators manual.


    Nice clean looking loader
     
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  10. Nige

    Nige Senior Member

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    For an operator manual you can download one from Cat Publications - https://catpublications.com/
    Click on "Continue as Guest"
    Type SEBU5420-01 in the Search box and hit GO. The illustration below should be top of the list. $31 + shipping for a paper manual, $27 for a downloadable pdf document.

    upload_2019-5-23_5-48-45.png
     
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  11. kshansen

    kshansen Senior Member

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    I would second the idea of getting an Maintenance Manual, $27.00 of the download is in my opinion one of the best things you can buy for the machine. If you like a paper copy the $31.00 is a good deal too!

    Not sure about the comments on the brakes. While the straight air brakes on say a 966C might be a little simpler to work on, the air over hydraulic discs are not that bad. 99% of the dependability any system is the proper maintenance!

    So you better have the manual Nige told you about downloaded by now!

    Just looked at the inside picture, the paint isn't even worn off the brake peddles yet!
     
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  12. John C.

    John C. Senior Member

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    My book shows 1976 is correct. I can't remember if those have the dry disk brakes of the old stop master actuated drum type brakes. The dry disks look just like the front brakes on a passenger car, just bigger. The stop master systems used a single cylinder that pushed a wedge out to apply the brakes. These systems are adjusted with a star wheel on the end of the cylinder. I know the B model 950s had the disks, I just don't remember if the A models had them also.

    Both brake types are operated hydraulically with two master cylinders, one for each axle, that Cat called power boosters. The two power boosters are located behind the cab and have air cans attached to the backs of them. There are stroke indicating rods that extend into the air cylinders. The rods actuate an electrical switch that turns on a light on the dash panel when the piston in the air cylinder moves too far. As I recall each power booster has it's own separate reservoir. There should be a decal next to the reservoir that states what kind of fluid to use. I think most I've worked on used hydraulic oil but I have seen systems that used brake fluid as well. Someone here may know. A service manual is an absolute must to have, especially if you have limited experience with these machines.

    Good Luck!
     
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  13. DB2

    DB2 Senior Member

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    I believe a 1976 would have the air over hydraulic disc brakes. We’ve had a few over the years and as stated only the brakes ever gave any issues. Could have been attributed to lack of use as they were primarily snow removal machines for us.
     
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  14. Thesteeleboy

    Thesteeleboy Active Member

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    Your all Awesome, Thanks for the support. I will heed the advice, I have purchased a shop manual on ebay and will order the operators manual Nige suggested. Thanks for all the support, This forum is great.
     
  15. Nige

    Nige Senior Member

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    I suggest that you hold off on buying the Operator Manual separately until you receive the Service Manual. If the SM is complete it should have an Operator Manual already in it.
    I hope you asked the Seller "is it complete?" because if they say yes and when it arrives it's incomplete you should have every right to return it.

    According to SIS it falls into the last group of 950 loaders before the model changed (81J7846-Up) and has dry disc brakes. Some of the earlier groups of 950 had the expanding shoe brakes.
     
    Last edited: May 23, 2019
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