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Thread: Lessons on the Eas block rebuild

  1. #1
    Join Date
    Sep 2008
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    Lessons on the Eas block rebuild

    Having stripped it out for the 3rd time and it now working as it should, I thought I would share what I have learnt:
    Mark cap heads to each valve
    Glue in the black stopper atop each piston
    When disassembled, blow out block with compressed air
    Clean all valves with denatured alcohol
    Lightly grease new rubbers on fitting
    Check and double check all is in place before tightening down
    Use double o rings in the collets, seat them gently using a chopstick
    Put caps back in order (unless you want a fairground ride style suspension )
    In preparation:
    Use Paul P38's excellent diagram
    Limit beer intake the night before
    Absolutely no beer whilst "on the job"
    Brush up on your swear words

    Having the suspension back has been worth the anguish. One last piece of advice: don't let the wife spill coffee on the switch pack when asking her to hit the suspension height button during testing- something else to now replace!

  2. #2
    Join Date
    Feb 2013
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    Gosford, NSW, Australia
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    Well done mate, glad to hear you have it sorted at last

  3. #3
    Join Date
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    Good work mate! They can be fun to work on sometimes! Have fun with the switch pack!

    Keithy

  4. #4
    Join Date
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    Quote Originally Posted by poleonpom View Post
    Glue in the black stopper atop each piston
    Hi Mate

    Where did you get those black stoppers if I may ask?

    Steve

  5. #5
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    Sep 2008
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    I didn't, they were the originals as none were supplied in the rebuild pack.

    When the suspension didn't work after the first rebuild I stripped it down to find that the black stops on top of some of the pistons had dislodged resulting in the pistons not being able to open.

    They must have come loose during the rebuild and were only held in place by surface tension. Obviously now not enough to keep them in place I superglued the buggers.

    This was the only real issue I had, the other was a slightly twisted O ring on the piston guide tube that the piston moves up and down in.

  6. #6
    Join Date
    Aug 2007
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    Quote Originally Posted by poleonpom View Post
    I didn't, they were the originals as none were supplied in the rebuild pack.

    When the suspension didn't work after the first rebuild I stripped it down to find that the black stops on top of some of the pistons had dislodged resulting in the pistons not being able to open.

    They must have come loose during the rebuild and were only held in place by surface tension. Obviously now not enough to keep them in place I superglued the buggers.

    This was the only real issue I had, the other was a slightly twisted O ring on the piston guide tube that the piston moves up and down in.

    Done that too, on my Classic.
    - And check/re-check with foam or whatever, all the joiners and fittings. Even new ones can sometimes leak a bit...
    - Make sure the air filter has'nt started to disintergrate, another nasty cause of pump taking too long to build up pressure...

  7. #7
    Join Date
    Aug 2007
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    Examine the black stopper for circular indents which may cause leaks. If they are damaged, simply invert them and glue them in place. Alternatively, very gently grind them flat with 400 wet and dry using PLENTY of water...
    MY99 RR P38 HSE 4.6 (Thor) gone (to Tasmania)
    2020 Subaru Impreza S ('SWMBO's Express' )
    2023 Ineos Grenadier Trialmaster (diesel)

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