I'm changing out my sons timing chain (87gt) that broke and having a problem getting the crank gear on. I tried to put it into the oven at 350 for 30 min but t would only slide on 80% of the way. It looks like the shaft gets a little thicker where the gear sits. Is there a tool made for getting it pressed in or would heating to 500 degrees help to expand it more? Any tips or tricks?
Preheat the oven to 500*F, and let it bake for about 15 minutes. That should help. Also, wrap it in oven mits or something similar after you take it out of the oven. That'll keep it nice and hot. Then get it onto the crankshaft ASAP.
[This message has been edited by Blacktree (edited 07-06-2016).]
thanks... gonna try that when I get out of work at 5. didn't know how much more it would/could expand. I was lightly wrapping it in foil to cook/transport to car (20ft). wanted it to slide on without added pounding. pulling it off was not fun don't want do have to do that again cuz of not being able to pound on all the way.
His damper wore out on both chain sides from assuming a slack chain. one of the sides broke off and got caught up in chain/gear and popped it. guess I got to drop oil pan next and clean just incase of metal fragments.
Yea I seen the video and its a great help. I did see Chilton's referenced the J5590 tool but seeing the video it looks like I didn't need it but then again everything works as planned on videos? I got a piece of black pipe that should do...I hope.
In summer, heating the gear might not help as well.
You need balancer tools anyway... try use balancer push/press tool w/ a small section of pipe as a spacer to push the gear. Might need to slot the pipe to clear the key. Or just press the old balancer and gear then remove the balancer again.
I'm surprise needs a pusher... Many crank gears just pull off and push on by hand. Many get stuck and need a puller to start but after just slip on/off.
Yea its going to be upper 90's all week here. thought about packing shaft in ice as well. the shaft and gear are spotless and clean. I do have a puller...maybe it did come with a press tool as well??? gonna have to double check.
Many puller kits don't have pushers. Push/press tools are available thru AZ loaner tools etc.
Before you ask... coat outside of crank seal or inside of hole w/ a little bit of paint sealer. That stops oil leaking from small scratches in the cover hole. (RTV isn't best here.) Good for tran's axle seals and most same type. Many claim new seal are bad but most leaks are scratches in the hole where the metal is driven into.
Driving "tools" can be very simple as block of wood or schedule 40 plastic pipe/fittings. Never hit them w/ hammer directly.
timing cover often needs centering tool to make sure crank seal is centered to the crank. (Any cover w/o alignment dowels, like Duke and others.) W/o this tool... start most cover bolts. Use old balancer etc to center the seal. (You don't need to press on the balancer fully for this.) Tighten enough bolts to keep cover in place. remove balancer to get at the rest of bolts.
