trying to replace timing belt. question is how can you be certain the cams are positioned correctly in relation to crank. timing belt broke while driving any info help would a help

 

Um, well there are index marks on the Cams themselves IIRC. I hope you at least have a Bentley manual? This is probably the most precise task for these engines, so really you're at the rebuild the engine stage. I don't recall which valves would be open or closed but I remember something about piston 3. Either way, it's very specific, I would get the manual. That's not the kind of stuff I remember off the top of my head.

The bigger question is, if you don't know how to time your engine, how do you know you haven't destroyed it? IF the belt broke while driving, that pretty much means broken engine.

 

i dont have the bently manuel but i have the haynes .i have white marks on the sprockets that were already there but i cant figure out what they relate to

 

Line the crank pulley mark up with the mark on the lower timing cover. For the cams, rotate them so the oval brackets on the front are horizontal, with the larger of the two holes toward the center of the engine. That puts it timed correctly. As stated above, if it broke while driving, you can skip this step and proceed immediately to head or engine replacement. It's an interference engine - if it broke while driving, you have valve salad.

 

ha ha i feel stupid i was trying to get the mechanical fan pully off so i could run the belt , tried a three jaw remover and bent my pully ,how do you get this thing out of the way ?

 

Two hex bolts below left of The pulley on the bracket, and two Allen bolts behind it, accessed through the openings in the pulley.

You need to look at a manual before you go any farther so you don't damage more parts. What was the deal when the belt broke? Driving or idling? How long was it running after it snapped?

 

it died immediatly , keeping fingers crossed at this point .its kind of funny on this forum.i do all MAJOR and minor maintenance on everything i own this car is just a pain in the *** from the day we got it i tore my diesle excursion down and after that loaded eight people in ,hooked up boat and tore across the dessert to the river, no prob. it seems sometimes on this forum alot of people like to give wise cracks instead of sound advice through their own trials.got three of four bolts just havin issues with the one on the bottom. thanks to devil.....strait up anserw and no b.s. we are all here to help each other ......right ?

 

by the way there ws not any strange noise when it let go ,no thump, no bump, it just stopped running .thats why fingers are crossed..... hopeing for a good outcome. as for the pully it was late ,what can i say. but if anyone needs advice on boats ,motorhomes,diesle, quads, i bet i can help......GLADLY

 

Hopefully you lucked out. That bottom Allen bolt is a pain in the ***. My upper Allen was a 6mm that I could reach with an Allen socket but the lower I believe is a 5mm and ibadan to use an Allen key on it. Spray the bejeezus out of it with PB or liquid wrench, put the long end in, and grip the short end with vise grips to turn it. Go easy so you don't snap the ball end of the Allen off in the bolt head. That's a pain that you won't enjoy dealing with.

 

thanks devil for the heads up. i am hoping the way the belt was wedged into the crank socket that it stopped before it mangled valves. ill post findings later