My 83 SD is not timing right? - PeachParts Mercedes-Benz Forum

jgreek · #1 11-02-2005, 09:26 PM

I took the valve cover off, and i alligned the timing slot on the chain, but i cannot turn the engine by hand. it seems that the chain is stuck. it turns 10-20 degrees either way, but she's not loose to go around. im thinking maybe the chain gets stuck at the bottom. any ideas?

boneheaddoctor · #2 11-02-2005, 09:27 PM

I hope you didn't turn it backwards.....

jgreek · #3 11-02-2005, 09:30 PM

i think i have. now what do i do?

boneheaddoctor · #4 11-02-2005, 09:31 PM

Quote:

Originally Posted by jgreek

i think i have. now what do i do?

the tensioner would take the full load rahter than take up slack and could jump time I believe...you are saying the engine is binding up?

jgreek · #5 11-02-2005, 09:34 PM

yes. With the chain in place, its binding. It's not going either way. it only moves a few degrees left and a few degrees right. and then it clicks and i don't want to force it or use the starter.

boneheaddoctor · #6 11-02-2005, 09:37 PM

Quote:

Originally Posted by jgreek

yes. With the chain in place, its binding. It's not going either way. it only moves a few degrees left and a few degrees right. and then it clicks and i don't want to force it or use the starter.

good idea don't force it at this point..sounds like it may have jumped time on you one tooth may be enough for valves to contact pistons..I've not had the timing chain out on this engine but hang in there someone who has will pick it up from here soon......

jgreek · #7 11-02-2005, 09:38 PM

any suggestions?

boneheaddoctor · #8 11-02-2005, 09:40 PM

Got to think about this one a bit....I'm thinking you may have broken the tensioner and its jaming it up.....

jgreek · #9 11-02-2005, 09:42 PM

no i took the tensioner out. i had it in and out many times. and it goes into place so i don't think its the tensioner

boneheaddoctor · #10 11-02-2005, 09:47 PM

Quote:

Originally Posted by jgreek

no i took the tensioner out. i had it in and out many times. and it goes into place so i don't think its the tensioner

the ears are still on it right? thats what breaks...

jgreek · #11 11-02-2005, 09:50 PM

what do you mean by the ears? nothing broke i didn't force anything. All i did was take the wheel off and move the chain around a little bit with the tensioner out. and then i put the chain back and the wheel back on top. but the engine is not turning, i tried it with the tensioner in and out and it still doesn't move. now what

boneheaddoctor · #12 11-02-2005, 09:54 PM

the ends.....supposedly thats what sometimes breads and drops inside.

Hmmmmm....is your crank at the tdc mark by any miricle?

jgreek · #13 11-02-2005, 09:57 PM

Yes i can put it there but the engine is not turning. it locks up.

boneheaddoctor · #14 11-02-2005, 10:00 PM

Quote:

Originally Posted by jgreek

Yes i can put it there but the engine is not turning. it locks up.

OK...with the crank on TDC can you determine if the cam is where it should be based on valve lift as per determining chain stretch? I bet its not where it should be but a tooth or more off.

On a side thought.....I hope its on the right stroke also...it could be on the wrong stroke.

jgreek · #15 11-02-2005, 10:03 PM

thats very possible. how do i fix it?