How do I set the timing chain on a jeep 4.0 liter motor, to make sure that the distributor, cam gear and crankshaft sproket line up together? Please help, can't find my manuel !!!
1987 Jeep comanche 2wd 4.0 liter
I set the timing chain back the way it came off. I lined the marks up before I took it off. I'm not sure but could it be 180 off. Can you give me a step by step instuctions so I can get this back together?
Hello and welcome to Just answer.com, Super mechanic here. About your vehicle.
Just to be sure, what year is it?
Did you take the distributor out?
Would that be a 2002?
No, the distributor is still in the same place. It's a 1987 jeep comanche 2wd 5 speed
This is the procedure on it.
INSTALLATION NOTE: Assemble the timing chain, crankshaft sprocket and camshaft sprocket with the timing marks aligned Fig. 5 .
Install the camshaft sprocket retaining preload bolt and washer Fig. 6 . Tighten the preload bolt to 108 N.m (80 ft. lbs.) torque.
Where should the distributor be pointing at when I do this?
I thought you said the distributor was not removed. It will be pointing to where it always was. If you like you can take the #1 spark plug out and bring the piston up on compression stroke, (once the chain is on of course) and see if the rotor is pointing to the #1 tower on the cap.
With it being pointing to the #1 piston, the timing marks should be lined up right. If not I should line the camshaft spocket mark to the crank sprocket mark, right.
No. You will have to see when the #1 cylinder is ready to fire. Sometimes the marks will be in the opposite direction. Let me see if I have anything on that.
ASE Master...30+ years...Shop owner..engine builder..collision structural repair