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Need help on a part time conversion

Discussion in 'The Garage' started by puckhead, Aug 16, 2006.

  1. puckhead

    puckhead 1/2 ton status

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    I have a 76 k20 camper special and I want to convert it to part time it has a 203 t case what parts do i need to complete this?
     
  2. pismorat

    pismorat 1/2 ton status

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    I got the MileMarker part time kit. It installed pretty easily and I have had no problems with it in the 5 years it's been in. Make sure you get selectable hubs too.
     
  3. Smitty

    Smitty 1/2 ton status

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    Take a look in the "Product Review" section. There's a great article on the part time kits. It's a pretty simple install.
     
  4. Cricket

    Cricket 3/4 ton status

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  5. chevy wrangler

    chevy wrangler 1/2 ton status

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    what does a part time kit do?? sorrry for the youngin question
     
  6. Cricket

    Cricket 3/4 ton status

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    The output shaft on a 203 has spyder gears just like a differential. The part time kit just replaces the spyders with solid metal blocks so the differential action is eliminated, making it part time 4x4 instead of fulltime.
     
  7. MattK

    MattK 1/2 ton status

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    you can also get the full shaft kit. its a good bit more cash, but it makes the case stronger in the end and has less driveline play.

    after installation, you end up with the option of 2 low...VERY handy on the trails.
     
  8. Cricket

    Cricket 3/4 ton status

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    The down side of the conversion is that oil is no longer slung to the rear output bearing constantly because you've made it a "PART TIME" t-case. Just remember to run it in 4 wheel drive with the front hubs unlocked for about 20 miles every 200. I just pop it in 4 high every time I fuel up and run it about 10 to 20 miles to keep the rear output lubricated.
     
  9. chevy wrangler

    chevy wrangler 1/2 ton status

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    how do i know if i have a part-time 203?? it has manual hubs and when it is in 4-hi lok i can unlock the hubs
     
  10. ntsqd

    ntsqd 1/2 ton status

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    My '79 came with the cheeper PT option already installed. Those blocks put a huge load on a tiny needle thrust bearing and mine went away. Once it does that you'll hear a rythmic 'ge-ding, ge-ding, ge-ding" which is the locking part of the center diff trying to lock while moving. :eek1: :eek1:
    If you're going to keep the 203 I highly recommend springing for the more spendy conversion kit.


    Or you could "convert" it to part time by putting a doubler in there. :wink1: :wink1: :wink1:
     

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