Cummins n14 camshaft replacement

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Kenllah, Nov 22, 2020.

  1. Kenllah

    Kenllah Light Load Member

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    Pulled my cam due to worn lobes and followers. Got all the cam bearings out except #7. What puller is used to keep from knocking the plug out of the back side?
     

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  3. spsauerland

    spsauerland Road Train Member

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    Screenshot_20201122-213730.png
    Something like this. Made by Monaco tool in Oregon, might give them a call.
     
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  4. Kenllah

    Kenllah Light Load Member

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    I've seen that. Was wondering if there were other more reasonable options. Would something like the attached photo work?
     

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  5. Dino soar

    Dino soar Road Train Member

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    I've never done the camshaft on mine so I am kind of curious about this.

    Can't you just replace the plug, wouldn't that be easier and less money?
     
  6. Kenllah

    Kenllah Light Load Member

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    I suppose but I'm guessing you'll have to pull the bell housing and maybe flywheel to put a plug back in.
     
  7. Dino soar

    Dino soar Road Train Member

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    You know I wasn't thinking about the engine being in the truck because I had my engine out on the floor when I was working on it.

    I don't exactly remember but I think the flywheel housing itself may have to come off to get to that plug.

    That makes sense you would need that tool or something similar.
     
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  8. BoxCarKidd

    BoxCarKidd Road Train Member

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    I you knock the plug out the back have to pull the flywheel housing to put one back in.
     
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  9. spsauerland

    spsauerland Road Train Member

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    It was quite common when in block cam engines were the standard, only the front six cam bearings were replaced and customer was given option for #7 and quoted the extra cost. How much wear is on the bearing?
     
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  10. BoxCarKidd

    BoxCarKidd Road Train Member

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    When I worked in an engine shop they had a special tool for that. It fit in the bearing bore and had 3 lugs about a 1/4 inch wide. As the threaded rod was tightened into the tool the 3 lugs expanded behind the bearing. Then a large slide hammer on the other end pulled it out.
    For a brand X engine I used a piece of flat bar aprox 3/8 by 1 1/2. Bolted two pieces of thin angle on the end at 90 degrees. Cut and ground until it fit snugly in the front cam bearings bore, which was the same OD as the rear. Unbolted it, installed the two angles in the rear bearing, slid the flat bar in from the front and bolted it in. Then attached a slide hammer. That was much faster than breaking a large Ag tractor in half.
     
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  11. Kenllah

    Kenllah Light Load Member

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    It's pretty worn. I'm going to get it out some way or another.
     
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