How do I get a crankshaft sprocket to not rotate?

From : leviathan

Q: how do i get a crankshaft sprocket to not rotate as i remove the center bolt .

Replies:

From : tbone

also great for changing valve stem seals...... i use compressed air for that. so do a great many people. but if for some reason the air fails or the valve gets pushed down it instantly loses whats holding it up against the seat. i prefer a positive stop. i worry about that too when removing the retainers. and since the air pushes the piston to the bottom of the cylinder it almost guarantees that you will need to pull the head if it drops. next time i need to do this i will try it this way. nah works great. im sure that it does but its still scary. lol yea it sounds funny but if you had the kind of luck that i have doing things like this you would know why i say this lol. -- if at first you dont succeed youre not cut out for skydiving .

From : gary glaenzer

if it has a serpentine belt you can allow an old belt to wrap onto itself on the pulley and loop it over a bolt stuck into a frame hole if not pull the starter and jam the flywheel with a large screw driver or pry-bar. thanks for the tips. ill buy the 20 21 & 22 mm wrenches tommorow because im scared the adjustable wrench might ruin the bolt. i hope it works. .

From : budd cochran

when i tore down the 318 a few years back it had a standard cooling fan instead of a clutch type no ac so i snugged the belt a little tighter and with a socket and breaker bar on the crank bolt i held a fan blade while loosening the crank bolt. once it and the pulley bolts were loose i removed the fan belt. -- budd cochran if it has a serpentine belt you can allow an old belt to wrap onto itself on the pulley and loop it over a bolt stuck into a frame hole if not pull the starter and jam the flywheel with a large screw driver or pry-bar. thanks for the tips. ill buy the 20 21 & 22 mm wrenches tommorow because im scared the adjustable wrench might ruin the bolt. i hope it works. --- outgoing mail is certified virus free by avg and norton checked by avg anti-virus system http//www.grisoft.com. version 6.0.532 / virus database 326 - release date 10/27/2003 .

From : redneck tookover hell

remove all the rocker arms first then just take out one spark plug at a time put that cylinder on tdc before turning the air chuck into the spark plug hole and hooking up the air hose i worry about that too when removing the retainers. and since the air pushes the piston to the bottom of the cylinder it almost guarantees that you will need to pull the head if it drops. n ill start watching reality tv shows when i can vote people off the planet. .

From : ron s

i tell ya you dodge people are awesome. you people are the most helpful out of any car groups ive ever visited. tommorow or i might have to try on saturday. by the way thanks for the warnings about the car turning on. it wont turn on because the timing belt and the ignition coil cable is removed. if you have the timing belt removed then your motor will be out of time the instant you hit the starter. make sure you do not have an interference type engine or you will bend some valves. big $$$ then. .

From : redneck tookover hell

how do i get a crankshaft sprocket to not rotate as i remove the center bolt attach it to a crankshaft use an impact wrench electric or air or remove the flywheel cover and use some sort of bar to hold the ring gear ill start watching reality tv shows when i can vote people off the planet. .

From : john kunkel

how do i get a crankshaft sprocket to not rotate as i remove the center bolt method #1 remove a spark plug and feed some soft rope into the cylinder then turn the crank counterclockwise until the piston comes up against the rope and acts as a stop. method #2 place a socket on the bolt with a long bar resting against the frame and then engage the starter. method #2 is not for the faint of heart .

From : budd cochran

dont forget to pull the coil wire or disable the ignition!!! -- budd cochran how do i get a crankshaft sprocket to not rotate as i remove the center bolt method #1 remove a spark plug and feed some soft rope into the cylinder then turn the crank counterclockwise until the piston comes up against the rope and acts as a stop. method #2 place a socket on the bolt with a long bar resting against the frame and then engage the starter. method #2 is not for the faint of heart --- outgoing mail is certified virus free by avg and norton checked by avg anti-virus system http//www.grisoft.com. version 6.0.532 / virus database 326 - release date 10/27/2003 .

From : tbone

how do i get a crankshaft sprocket to not rotate as i remove the center bolt method #1 remove a spark plug and feed some soft rope into the cylinder then turn the crank counterclockwise until the piston comes up against the rope and acts as a stop. that is an interesting idea. method #2 place a socket on the bolt with a long bar resting against the frame and then engage the starter. method #2 is not for the faint of heart now that idea is just scary - -- if at first you dont succeed youre not cut out for skydiving .

From : max340

method #1 remove a spark plug and feed some soft rope into the cylinder then turn the crank counterclockwise until the piston comes up against the rope and acts as a stop. that is an interesting idea. also great for changing valve stem seals...... method #2 place a socket on the bolt with a long bar resting against the frame and then engage the starter. method #2 is not for the faint of heart now that idea is just scary - nah works great. max i have add and my friends dont understand look!! a chicken!!! .

From : denny

how do i get a crankshaft sprocket to not rotate as i remove the center bolt method #1 remove a spark plug and feed some soft rope into the cylinder then turn the crank counterclockwise until the piston comes up against the rope and acts as a stop. that is an interesting idea. its also a good way to hold the valves closed if you have to change springs/seals and you dont have compressed air handy. method #2 place a socket on the bolt with a long bar resting against the frame and then engage the starter. method #2 is not for the faint of heart now that idea is just scary - friends dont let friends do this..... bg denny -- if at first you dont succeed youre not cut out for skydiving .

From : budd cochran

i did it on a fork lift once. i left the ignition live and ran the engine for about 5 seconds. had the radiator recored the following week now you know why i remembered to suggest he disable the ignition . . . . . -- budd cochran how do i get a crankshaft sprocket to not rotate as i remove the center bolt method #1 remove a spark plug and feed some soft rope into the cylinder then turn the crank counterclockwise until the piston comes up against the rope and acts as a stop. that is an interesting idea. its also a good way to hold the valves closed if you have to change springs/seals and you dont have compressed air handy. method #2 place a socket on the bolt with a long bar resting against the frame and then engage the starter. method #2 is not for the faint of heart now that idea is just scary - friends dont let friends do this..... bg denny -- if at first you dont succeed youre not cut out for skydiving --- outgoing mail is certified virus free by avg and norton checked by avg anti-virus system http//www.grisoft.com. version 6.0.532 / virus database 326 - release date 10/27/2003 .

From : tbone

method #1 remove a spark plug and feed some soft rope into the cylinder then turn the crank counterclockwise until the piston comes up against the rope and acts as a stop. that is an interesting idea. also great for changing valve stem seals...... i use compressed air for that. method #2 place a socket on the bolt with a long bar resting against the frame and then engage the starter. method #2 is not for the faint of heart now that idea is just scary - nah works great. im sure that it does but its still scary. -- if at first you dont succeed youre not cut out for skydiving .

From : leviathan

thanks for the tips. ill buy the 20 21 & 22 mm wrenches tommorow because im scared the adjustable wrench might ruin the bolt. i hope it works. .

From : tbone

i was taught to not heat floats with a large hot heat source. -- budd cochran iow my methods are sooooooo close to yours that you know that if you post your method you will no longer be able to continue your childish attacks on me. or is it that you are afraid that i will just shot your methods full of holes -- if at first you dont succeed youre not cut out for skydiving no. i just wanted to see if you had any knowledge of how it was done thats all. -- budd cochran are you going to explain the budd method of float repair or not -- if at first you dont succeed youre not cut out for skydiving what makes you say that there are only a few people in here that i dont get along with compared to the total number in the group iow you and your friends probably amount to about 1% of the entire group. and statistically its 1% of any demographic group that doesnt get along well. -- budd cochran remember just because a princess calls you a steed doesnt stop you from being an ass. on thu 30 oct 2003 001405 gmt budd cochran mr-d150spam@citlink.net wrote yeah but greg and i dont get along. budd that seems to be a common theme for you. ever think about that --- outgoing mail is certified virus free by avg and norton checked by avg anti-virus system http//www.grisoft.com. version 6.0.532 / virus database 326 - release date 10/27/2003 --- outgoing mail is certified virus free by avg and norton checked by avg anti-virus system http//www.grisoft.com. version 6.0.532 / virus database 326 - release date 10/27/2003 --- outgoing mail is certified virus free by avg and norton checked by avg anti-virus system http//www.grisoft.com. version 6.0.532 / virus database 326 - release date 10/27/2003 .

From : clare snyder on ca

on thu 30 oct 2003 144201 -0500 tbone fatchance@noway.now wrote how do i get a crankshaft sprocket to not rotate as i remove the center bolt method #1 remove a spark plug and feed some soft rope into the cylinder then turn the crank counterclockwise until the piston comes up against the rope and acts as a stop. that is an interesting idea. ive used that one many times over the years - particularly on engines out of the car or with no battery or starter. method #2 place a socket on the bolt with a long bar resting against the frame and then engage the starter. method #2 is not for the faint of heart now that idea is just scary - and this is my favourite - call it the newfy impact wrench. ive used it many times. .

From : leviathan

i tell ya you dodge people are awesome. you people are the most helpful out of any car groups ive ever visited. im having a bitch of a time removing that crankshaft sprocket. i tried using the craftsman strap wrench to hold the sprocket as i turned the bolt with a wrench but that didnt work. this method worked for removing the pulleys 4 bolts but not for the sprockets larger center bolt. tommorow ill try the idea some of you mentioned. the way im gonna do it is that im going to insert the wrench through a pipe which will rest against the street floor and then ill attach the wrench to the bolt as i or someone else turns the car on. ill let you all know if this works tommorow or i might have to try on saturday. by the way thanks for the warnings about the car turning on. it wont turn on because the timing belt and the ignition coil cable is removed. do you think an adjustable wrench a fairly large one will do the trick or do you think i should definitely go for a wrench that fits exactly on the bolt id have to buy the wrench because i only have up to 19mm. thanks. .

From : s

i tell ya you dodge people are awesome. you people are the most helpful out of any car groups ive ever visited. im having a bitch of a time removing that crankshaft sprocket. i tried using the craftsman strap wrench to hold the sprocket as i turned the bolt with a wrench but that didnt work. this method worked for removing the pulleys 4 bolts but not for the sprockets larger center bolt. tommorow ill try the idea some of you mentioned. the way im gonna do it is that im going to insert the wrench through a pipe which will rest against the street floor and then ill attach the wrench to the bolt as i or someone else turns the car on. ill let you all know if this works tommorow or i might have to try on saturday. by the way thanks for the warnings about the car turning on. it wont turn on because the timing belt and the ignition coil cable is removed. do you think an adjustable wrench a fairly large one will do the trick or do you think i should definitely go for a wrench that fits exactly on the bolt id have to buy the wrench because i only have up to 19mm. thanks. couple things 1get the right size wrench/socket dont bother with an adjustable or pipe wrench 2 make sure the breaker bar/wrench/whatever is against a hard/non-moving surface that bumping the starter will attempt to push the wrench/whatever into *you really dont want that wrench on the ground on the wrong side when you hit the starter* 3 just a quick bump of the key should be enough to break it loose you dont need to really crank the engine over just key to start then off quickly .

From : max340

also great for changing valve stem seals...... i use compressed air for that. so do a great many people. but if for some reason the air fails or the valve gets pushed down it instantly loses whats holding it up against the seat. i prefer a positive stop. nah works great. im sure that it does but its still scary. lol max i have add and my friends dont understand look!! a chicken!!! .

From : leviathan

i tried the idea out today and it worked!!!! thanks a million. now i can replace the smaller timing belt too. this is my first time replacing a timing belt on a car. any tips .

From : clem

if not pull the starter and jam the flywheel with a large screw driver or pry-bar. thanks for the tips. ill buy the 20 21 & 22 mm wrenches tommorow because im scared the adjustable wrench might ruin the bolt. i hope it works. .