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Tool Talk Discussion Forum

Locking the flywheel on Mazda Auto tranny?

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Darren in TN

02-17-2004 17:55:28




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Hey, y'all.
I'm about to change the timing belt, front seals, and oil pump on my Mazda. It's a FWD with an automatic tranny. What's the best way to lock up the tranny (like at the flywheel, or wherever else you'd recommend) to allow removal/installation of the crankshaft pulley retaining bolt? The manual recommends using a 'flywheel locking tool' but I figured you guys would have some tricks for this. I've been spoiled working on my big, cavernous Ford.

Thanks in advance,
Darren

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Eddie Petty

02-18-2004 02:58:42




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 Re: Locking the flywheel on Mazda Auto tranny? in reply to Darren in TN, 02-17-2004 17:55:28  
Darren, I don't believe you have to remove the center bolt in the crank pulley. On my MX-6 there is a ring of 10mm screws that hold the bely pulley to the crank extension. The center bolt holds the crank drive gear on the nose of the crank and should NOT need be removed. FWIW, Ed in 'ole Virginny



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RusselAZ

02-17-2004 18:40:03




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 Re: Locking the flywheel on Mazda Auto tranny? in reply to Darren in TN, 02-17-2004 17:55:28  
safest way to lock up and engine to remove hard to remove crankshaft bolts is to remove a spark plug, an easy one to access, and take some nylon rope and fill the cylinder with it, or about full. Anyway, use enough to compress and keep it from turning over. when you are done, just pull it out.



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Russ

02-17-2004 17:59:42




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 Re: Locking the flywheel on Mazda Auto tranny? in reply to Darren in TN, 02-17-2004 17:55:28  
Can you get an impact on it? That is how I remove bolts from rotating parts. Or, take the belt off and put a strap wrench on the pulley.



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Darren in TN

02-17-2004 19:15:05




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 Re: Re: Locking the flywheel on Mazda Auto tranny? in reply to Russ, 02-17-2004 17:59:42  

I'm not sure yet if I can get an impact wrench on it. That's my old standby too, I'm just not sure if there'll be enough clearance to get to it. Good excuse to get some impact joints and universal extensions. I had heard RussellAZ's nylon rope trick before, but I had never heard of using a strap wrench. Do they hold well enough to loosen a bolt torqued to 125 ft-lbs?? I had a harmonic balancer come apart in the middle of nowhere on my Bronco and was able to pull the crank bolt by putting a breaker bar on it, bracing it against the frame carefully, and spinning the starter for just a fraction of a second. Worked great, but if anyone reading this tries it, remember: 1. make sure the crank is gonna spin the right direction (do NOT try to tighten one this way!), 2. make sure you unhook you coil 'cuz you really don't want your engine to catch and unbolt your dampener for you!, 3.try to brace it against the ground-- I only used my frame because I had to and that Bronco is built like a tank.

Thanks for your help, guys. It's looking more like I won't have to pull the crank pulley. The timing belt is clean and looks great, and I figured out that a hissing noise I hear from the area of the crank pulley is actually coming from the plastic timing cover rubbing on the pulley where the last bozo to work on it didn't reassemble the two-piece cover correctly.

Thanks and God bless,
Darren

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