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  1. #1

    Do I Really have to remove crankshaft to replace timing chain guides?

    Does anybody know if I really have to remove the crankshaft to replace the two timing chain guides on 4tec 215 hp engine? Manual says so, but that seems like outrageous amount of work.


  2. #2
    Joe Stang's Avatar
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    You at least have to
    lift it up enough to remove the oil jets for the pistons.

  3. #3
    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
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    Yup..... crank has to be lifted to get the right guide out.

  4. #4
    Right guide is the one on the tensioner?

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    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
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    Yup

  6. #6
    I think I could get by with the one on the tensioner. The one on the back side of the chain (nearer the center of the engine) was damaged a little and came out.

  7. #7
    RXP 260 X Short Course Veteran RXP244's Avatar
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    To answer your question in more detail. The left guide (exhaust side) just drops in from the top and is only put back in once the head goes back down. The right guide (inlet side) sits (pivots) on a pin on the top case. The only way to remove the chain and guide from the pin is to split the cases and lift the crank out enough to give clearance. You still need to establish why your chain lost tension.

  8. #8
    RXP 260 X Short Course Veteran RXP244's Avatar
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    Quote Originally Posted by rferrel1 View Post
    I think I could get by with the one on the tensioner. The one on the back side of the chain (nearer the center of the engine) was damaged a little and came out.

    This statement makes no sense, as the way I see it, the guide nearer the centre of the engine is the one on the pin and can't come out.

  9. #9
    Well, the one on the side nearer the exhaust seemed loose so I pulled up on it and it came out the top with little resistance. I already have the PTO enclosure removed. If I back the tensioner out, maybe I can get a better look at the guide on the intake side and see if I can find any damage or wear on it. I sure don't want to mess with the crankshaft if I don't have to. Does that make sense now?

  10. #10
    Dont forget the tensioner has a check valve inside. Look into the end of it you are looking at a check ball. Gently press it in while depressing the valve. This bleeds the valve down so you can get it back into the hole & tighten down without stressing the new chain. Oil pressure will inflate the tensioner like a valve tappet.

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