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Old 24 Aug 2007, 05:36 am
dan dan is offline
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Default Does anyone understand the 6 x 100mm bolt used when replacing '96 Prelude timing belts?

The Chilton repair manual refers to a 6 x 100mm bolt or rod to align the rear timing balancer pulley. It is also says to remove the bolt from the maintenance hole on the side of the block? What is it talking about and is this necessary? Page 3-46 step number 27. If anyone has replaced the timing belt on a 96 Prelude before I need serious help with this step. I have no idea what they are talking about.
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Old 24 Aug 2007, 05:40 am
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6 is the pitch of the tread on the bolt (fine or coarse) 100mm is the girth
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Old 24 Aug 2007, 05:44 am
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sometimes you need to skip certain procedures in the Chilton manual. Not every little step needs to be performed... Also, Dan - if your having problems, and can't figure it out. WALK AWAY FROM IT FOR AWHILE! Take a break, let your mind relax a little bit. It will come to you after awhile.
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Old 24 Aug 2007, 05:46 am
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Some engines use special tools to factory align parts. This could be the case. Make sure adjusting bolts are not locked in place by another bolt. If all seems ok, try the below.If the timing marks are aligned properly and the belt tensioner has been loosened, adjusted and retightened so there is just a hint of play, it should run ok. Just make sure everything is adjusted to properly align the marks and turn the engine over by hand several times (KEY OFF) Use a ratchet and socket on the crank pulley bolt to rotate the engine. Turn it over a few times to make sure it turns without a bind. Make sure the alignment stays where you put it. If rotation consistently comes up correct it should start and run ok.
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Old 24 Aug 2007, 05:48 am
Les Les is offline
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You have an engine that has a balance shaft. The belt that drives this shaft is normally replaced when you replace the timing belt. The function of the shaft is simple really, it merely counteracts the vibrations from the pistons. Sit's there and spins when the engine is running.When you are replacing the balance shaft belt, you will need to align it for it to operate properly. This is done by inserting a 6x100mm bolt into the mainenance hole in the block. The bolt is merely 6mm in diameter and 100mm long. Any rod with that diameter and at least that long would suffice. I think I used a drill bit the last time I changed this belt. Just be sure not to drop it in the engine or leave it in when you go to start the engine!With the bolt removed from the maintenance hole, you will be able to insert the alignment rod but it won't go in far enough unless you rotate the balance shaft. At a certain point, and only one such point, in the balance shaft's rotation, the rod will fully insert and the balance shaft won't turn anymore. The rod prevents it from turning and keeps it in proper alignment with the crankshaft which should be pointing at top dead center or as specified by your service manual. At that point you can install the balance shaft belt and tension it up. Afterward, you simply pull out the alignment rod and put the bolt back in the maintenance hole to seal it up.Simple really. Good luck!
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Old 24 Aug 2007, 05:54 am
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that is used to align your balance shaft so dont just "skip" it a number 2 phillips screwdriver will also do the trick just line up the marks on the balance shaft gear and block then slip the screwdriver in leave it there until the balance shaft belt is on but dont forget to take it back oup ant reinstall the bolt afterwards
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