Changed the timing belt in 1991 toy 4runner and now it wont start
Changed the seal on the front crankshaft and have put it all back together and have tried a couple of times to get the timing right the first time it started but didnt run right tried again and now it wont start
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front seal --remove harmonic balancer/ front pulley
if it is a belt for the cam shafts set it on tdc no1 piston so that all the marks line up then remove the belt and the bottom pulley to get to the seal
if it is a chain the seal will be after the balancer
if it is a rear main seal, remove the transmission and flywheel
best advice is to get a workshop manual for the vehicle and follow the directions and photos closely
Check for some wires in front of the motor. The Serpetine belt may have caught them and ripped them out when you cranked the engine. There can be a Crankshaft sensor and a Camshaft sensor which is now disconnected.
Its also possible that the water pouring out of your motor has shorted the connector or soaked the Crankshaft sensor. You can try unplugging and cleaning the connector with WD40.
yes, I just changed one of these recently. Had to take both front and bottom off engine. Very difficult repair, as there are no good jack points for the engine when you have all the motor mounts off.
Here is procedure I would recommend.
Remove starter and engine to transmission brackets front and back.
Remove transmission starter gear cover.
drain oil and remove oil pan.
put a block under the crankshaft and jack to release weight on motor mount.
remove front motor mount (by serpentine belt)
remove compressor and bracket.
remove crank pulley and vib damper.
remove timing cover. mark timing belt with direction of travel
loosen tensioner gear.
remove timing belt.
remove crankshaft timing gear and key.
remove seal and oil pump housing.
clean gasket surfaces.
replace seal and reverse procedure.
Thats a very good question, a timing belt is a dry belt. What that means is no oil should be in the general area. You have a couple of seals your camshaft oil seal and your crankshaft front oil seal. As long as both of those are not leaking then you will not leak oil in that general area.
Disconnect the negative battery cable from the battery. On vehicles equipped with an air bag, wait at least 90 seconds before proceeding.
Remove the front covers and the timing belt.
Remove the crankshaft timing belt sprocket.
WARNING When removing the front seal, be extremely careful not to damage the crankshaft.
Using a knife, cut off the oil seal lip.
Tape the end of a flat bladed tool to avoid damaging crankshaft. Pry out the oil seal using the taped end of the tool.
Inspect the oil seal riding surface on the crankshaft for signs of wear or damage.
Wipe the seal bore with a clean rag.
Apply multipurpose grease the lip of a new oil seal.
Drive the oil seal into place using tool SST 09309–37010 or an equivalent seal installer tool. Make sure the seal surface is flush with the oil pump case edge. Work from the front of the cover. Be extremely careful not to damage the seal.
Install the sprocket without disturbing the Woodruff key.
Install the timing belt and front covers.
Connect the negative battery cable to the battery.
Yes, it's possible to change the seal after removing the balancer.
If the balancer shows signs of scratching, wear at the place of the seal, change that part too!
To remove the old seal, drill 2 small opposite holes in the seal flange ( there is metal in it ).
Screw 2 (parker) screws in the holes, so you can pull the seal out gently.
Grease the new seals' inner race, and put some sealant paste to the external race.
Push it back in place with a wooden piece ( drill a hole in the center for the crankshaft end )
Grease the outher race of the balancer. This will help the seal come gently into place.
first problem you replced the rear main seal? was the timing belt installed correctly, from what gather is that you the dist cranked back as far as possably, i would check timing marks make sure they are right if they are check to make sure dist was installed on no#1 cyclinder at tdc on commpession stroke good luck and let me know how it gose kdc744