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Engine head removal 700 1986

posted by  someone claiming to be Samuel on  Mon Mar 14 15:29 CST 2005 [RELATED]

Decided to replace blown head gasket on my 1986 740T.
All went well, except I can't loosen the 14mm head bolts.
I'm using 3/8 socket set, and the darn bolts won't budge.
What's the secret to this ?
They are supposed to be tightened to approx. 45 lbs.
They feel mora like 150 ?!
Should I try 1/2 inch socket set ?
I already broke 2 14 mm 3/8 sockets. I'm afraid to continue.
Guy at SEARS knows me. I don't know if there is a limit on
the number of free Craftsman replacement sets...







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    Engine head removal 700 1986

    posted by  pcarduc1 on  Mon Mar 21 00:01 CST 2005
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS] [RELATED]

    Hello;
    Outside of the head bolts how hard was it to remove the head. Is there a step by step post in any of these forums that I can read to help me to do it myself?
    Thanks Pat








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    Engine head removal 700 1986

    posted by  740ATL on  Wed Mar 16 07:32 CST 2005
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Wed Nov 14 12:40 CST 2007
    [RELATED]

    you will need to buy three 1/2" 14mm sockets... two that you will break and the third an impact socket.

    I used the impact socket, attached to a 24" breaker bar, with four foot steel pipe on the end of that.

    The pipe I got at home depot for something like $4.

    Mike








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    Engine head removal 700 1986

    posted by  MR-FLA on  Tue Mar 15 01:32 CST 2005
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    I used a King-Kong size breaker bar on my 240. The head came off with two casualties; a cheap chinese made socket went from a 6 point to a 12 point and a Craftsman socket cracked in two places.


    -M.R.








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    Engine head removal 700 1986

    posted by  someone claiming to be Steve on  Mon Mar 14 17:06 CST 2005 [RELATED]

    Use a quality 1/2 inch six-point impact socket for this and a large breaker bar.








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    Engine head removal 700 1986

    posted by  Jerry Warren on  Mon Mar 14 16:02 CST 2005
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    last visit: Tue Sep 2 17:06 CST 2008
    [RELATED]

    True the head bolts are tighten to 45 ft-lbs. The next step is to tighten the bolts an additional 90 degrees. Why are you using a 3/8 drive socket? Use a 1/2 inch drive and a breaker bar, that should break the head bolts free.








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      Engine head removal 700 1986

      posted by  illbird68 on  Tue Mar 15 12:10 CST 2005
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      last visit: Fri Jul 25 12:56 CST 2008
      [RELATED]

      in order to get head bots off with a 3/8 drive socket you would have to be a true monster. I am 185lbs of average strength and it required a 24 inch breaker bar and the use of a piece of pipe to extend mine. i use the pipe to apply a more even and controled pressure. this combine with the help of a buddy to assure that you keep everthing straight while applying the pressue can save a lot of time with broken head bolts. Here is an example of one of the reasons that we always use 6 point tools on 6 point fasteners whenever possible.....cause they work better. good luck....







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