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  #1  
Old 05-23-2013, 06:07 PM
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Default 1994 b2300 broken timing belt

Hey guys my buddy was going to junk his 1994 Mazda B 2300 2.3 because the timing belt broke and he got it torn down to crank shaft pulley but couldn't get the bolt out. It sat almost two years in the driveway and I offered him scrap value of 200 for it and be accepted. He already bought the belt so I'm gonna attemp to finish and reassemble. I think I got some bolts missing so I'm looking for a schematic so I can order replacements for things like mounting radiator, timing cover, steering pump (non a/c) etc. also he broke the transmission cooler line right behind the fitting at the radiator. I'm gonna attempt a rubber hose repair with clamps but will need suggestions on how make it work because there is barely enough tube left at the fitting to clamp too. Also there is surface rust starting to form on outside exposed engine parts even though hood was closed and the coolant is all drained. Looking for pointers and what to expect with reassembly after sitting so long.

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Can I get the belt on and safely attempt to start without total reassembly of power steering, radiator, serpentine belt etc. don't wanna waste time totally assembling and money buying fasteners and fixing trans cooler line if she won't run anyway. Not gonna sink a lot of money In this one. It's totally for hauling lawn mowers and stuff.
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  #2  
Old 05-23-2013, 11:34 PM
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Default Re: 1994 b2300 broken timing belt

When I did the timing belt on my 94 Mazda B2300 I did exactly that. Started it and let it run 60 seconds or so with none of the components you mentioned hooked up. I too wanted to be sure it would start and run without reassembling the whole thing. The timing cover just snaps into place. As far as an illustration get a manual for your truck. They arent expensive and it will come in handy with other problems/repairs. Or you could probably google it and come up with pics and instruction. Its not a hard job to do the actual belt change will take less than 20 minutes its the disassembly and reassembly that is time consuming.That crank bolt is tourqed over 100 lbs. An impact wrench will most likely spin it out. Replace the timing belt tensioner while your there too. If it does start and run you might want to replace the water pump and thermostat while your that far into it. If this truck hasent ran in a few years the fuel will be separated and varnish like. So get as much of the old fuel out and replace it with fresh gas. If and when it starts you will want to run some sea foam through the fuel to clean up lines ....injectors ect. As far as hoses look at the junk yard or go on Ebay. Good luck with your new truck I BET you will get it figured out.
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  #3  
Old 07-28-2013, 06:17 AM
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Default Re: 1994 b2300 broken timing belt

I can't get the botl out. Tried the breaker bar/starter method and its all to tight/rusted from sitting. Is there another way without an impact? Dad mentioned jamming the flywheel. Can you get a rope or screwdriver in there somehow to bind it? Any other suggestions?

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The title say 1997 not 1994 as I recall if that matters.
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  #4  
Old 07-28-2013, 07:55 AM
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Default

Sometimes a shorter ratchet and a smack from a hammer will work. That shock from the hit of the hammer will sometimes knock it loose.

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  #5  
Old 07-28-2013, 08:42 AM
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Default Re: 1994 b2300 broken timing belt

I just broke the breaker bar trying the bump start again. Ill try the hammer trick. What about taking off starter and putting something into flywheel? Will that work?
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  #6  
Old 07-28-2013, 09:02 AM
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Default Re: 1994 b2300 broken timing belt

There's also a tool called an impact driver. Put the socket on, put it on the bolt, and smack the end with a bfh. Can develop over 300 lb/ft on impact.

Be careful if you try to put a screwdriver or something to jam the flywheel. Good way to break off a tooth.
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  #7  
Old 07-28-2013, 09:09 AM
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Default Re: 1994 b2300 broken timing belt

PB Blaster it about 2-3 times a day for 3 days, tapping it with a hammer each time. Then either get an impact gun (a good one) or another breaker bar with a big thick pipe over the whole handle for added strength and try it again.
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  #8  
Old 07-28-2013, 01:41 PM
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Default Re: 1994 b2300 broken timing belt

Quote:
Originally Posted by sheltonfilms View Post
PB Blaster it about 2-3 times a day for 3 days, tapping it with a hammer each time. Then either get an impact gun (a good one) or another breaker bar with a big thick pipe over the whole handle for added strength and try it again.
Minimum 1/2 drive on the breaker bar and an impact quality 6 point socket. (get a Craftsman, free replacement when you break it) 1" black pipe fits over the end of their breaker bar real nice.
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  #9  
Old 07-28-2013, 03:58 PM
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Default Re: 1994 b2300 broken timing belt

Stopped and got my 3/8 breaker bar replaced and bought a 1/2 drive one to match it. Just got home and tried it again and it worked. Now I need to buy a puller and get the pulley off and we are home free! I'll check back if hit another snag.
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  #10  
Old 07-28-2013, 06:39 PM
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3/8? Damn no wonder it broke. I usuall switch to 1/2 on anything above 13mm/ 1/2"
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  #11  
Old 07-28-2013, 07:01 PM
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Default Re: 1994 b2300 broken timing belt

Quote:
Originally Posted by Chucky79 View Post
Stopped and got my 3/8 breaker bar replaced and bought a 1/2 drive one to match it. Just got home and tried it again and it worked. Now I need to buy a puller and get the pulley off and we are home free! I'll check back if hit another snag.
Check if your pulley has the threaded holes for attaching the puller. Makes a diff on which one works best.
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  #12  
Old 07-31-2013, 04:33 AM
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Default Re: 1994 b2300 broken timing belt

Ok it's back together. Got it started after ALOT of work. Sitting for almost 3 years has been rough on the old girl. Now I need to figure out how to torque the crank bolt back down to spec, fix the broken transmission cooler line, refill transmission because all the fluid pumped out, fix a gas filer tube leak that has appeared and then find a website to order the missin bolts and hardware. It's been a process but I hope it's all worth it in the long run. Thanks for the help and please keep sending the suggestions if you have any.
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  #13  
Old 07-31-2013, 06:53 PM
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Default Re: 1994 b2300 broken timing belt

Quick question about my radiator. I was flushing it out tonight before reinstalling because its been sitting so long and water was flowing out of the two fittings for the transmission cooler. That's impossible unless the radiator is busted internally right? Wanna be sure before I install it and cause all kinds of problems.
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  #14  
Old 07-31-2013, 08:11 PM
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This doesn't sound good.


Check the transmission dipstick. If it doesn't look like pure transmission fluid, it's change the radiator time.

That truly sucks. I feel for ya.

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  #15  
Old 07-31-2013, 09:03 PM
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Default Re: 1994 b2300 broken timing belt

Guess it wouldn't hurt to buy new and do a tranny fluid and filter change too. Just didn't wanna sink any money in it until I drove it a week of so to make sure it was gonna hold together. O well
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