Didn't realize camshafts on a zetec didn't have key ways for the cam pulleys... Anyone that can explain roughly how to do them just need the basics really
Lock the cams with a bar in the other end across the head. Set the crank to TDC with the pulley mark. Slacken the cam pulley bolts and knock the pulleys loose on the tappers. Fit the belt, release the tensioner and lock up tighten the cam pully bolts, remove locking bar. Turn 2 turns back to crank timing marks and recheck cam position with locking bar.
The cam pulleys rotate on the camshaft so that the belt can be adjusted.
If the belt isn't fitted, you can either buy a kit, or use a 5mm steel plate to lock the cams, they'll only lock one way, if the plate
won't go into the back of the cams, turn them 180 Degrees. Then ensure the engine is at TDC, fit the belt with the cam pulleys loosened using a
reaction tool (Don't rely on the plate to hold the cams while you loosen the pulley, I think it can twist the camshaft).
Then take out the slack in the belt from the crank to the exhaust pulley, tighten the pulley, again, with the reaction tool, take out the slack to the
inlet pulley, tighten this pulley and allow the tensioner to do the rest. Remove the 5mm plate. Then turn the engine by hand a few times and check the
timing and belt tension again.
I hope that makes sense.
Regards,
Chris
quote:
Originally posted by adithorp
Lock the cams with a bar in the other end across the head. Set the crank to TDC with the pulley mark. Slacken the cam pulley bolts and knock the pulleys loose on the tappers. Fit the belt, release the tensioner and lock up tighten the cam pully bolts, remove locking bar. Turn 2 turns back to crank timing marks and recheck cam position with locking bar.
TIP:
DONT use the locking bar at the back of the cams to hold things still whilst tightening the pulley bolts - bad things can happen
DO use a tool that holds the pulleys still whilst torquing up
Mine is a simple piece of bar with a couple of bolts to poke in the pulleys spokes
You can get fancy ones that do the same task
Regards
Rob
If it's working use the search facility, Zetec cam timing has been covered several times
Dooey99
Just do what I did the same day I bought my first Zetec form the scrappies, go to Halfords or similar and get a Haynes manual for the model the engine
was out of. It details how to dismantle and reassemble, how to make tools for cam timinn and hold the pulleys plus it has all the torque setting which
are essential when you put it back together.
The A series, X-flow and Pinto manuals I bought years ago have been worth every penny.