Removing crankshaft pulley bolt
#1
Removing crankshaft pulley bolt
Has anyone successfully removed the crankshaft pulley bolt using the cranking method by putting a breaker bar on the bolt and cranking the engine? I need to replace a head gasket on an XK8 V8....If not has anyone used the jack method by putting one end of breaker bar with socket on the bolt, the other end on the floor with the left side of car jacked up and releasing hydraulic jack?
#2
i just had the front pulley off and instead of going that route, I wrapped an old belt around the crank pulley and used a 24" chain wrench to hold the pulley while I used a breaker bar and a long pipe to remove the bolt. I think the fan needed to come out for clearance but it was really much easier than I expected. Putting the new (don't re-use the old bolt) bolt back in was more work. I had to wedge a pry bar into the torque converter to lock the engine so I could re torque the new bolt. good luck
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motorcarman (11-08-2017)
#3
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Here is the correct tool for removing the crankshaft front pulley bolt.
Under no circumstances is the crankshaft holding tool, which is inserted in place of the crankshaft position sensor, to be used to hold the crankshaft whilst attempting to remove the damper bolt.
AJ-V8 Crankshaft Holding Tool
#4
#5
I purchased and used the tool shown by NBCat, plus a longer adapter since my pulley is deeper for the SC belt. Tool worked perfectly, locking itself against the SC snout. Bolt came out with a little muscle, but not so much strain as to cause a hernia...
My problem is getting the pulley loose.
My problem is getting the pulley loose.
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rsdmitch7 (04-15-2018)
#7
Thanks for your replies everyone....I am aware of these methodologies but also saw a post describing one owner's successful use of a breaker bar extended to the floor on the driver's side of the pulley while he briefly touched the starter. I was just wondering if anyone else had success with this method because it seems to be the simplest and putting the breaker bar behind the rod that runs across the suspension looks like it would prevent any unintended damage. His warning was to avoid allowing the key to energize the starter for too long suggesting there is more than enough torque to get the job done.
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#8
#9
#10
Removing crankshaft pulley bolt xk8 great news!
After trying unsuccessfully to remove the crankshaft pulley bolt on my XK8 by putting the breaker bar and socket on the bolt and cranking the engine (after removing all the spark plugs and fully charging the battery) I elevated the bar a couple inches and SUCCESS!!! I have been able to crank the engine and unscrew that bolt!!!!! I played around for a couple of weeks occasionally spraying the bolt with liquid wrench, so I wouldn't try this without doing that first. However it is a beautiful sound to hear that bolt cranking out and to feel the gap widening each time I give it a few turns with the ignition key......
No guarantee this will work for you, and of course you always risk damage with a bolt torqued on at over 300 foot pounds, but it worked for me....Again thanks for all the help....I was getting ready to try the belt/chain wrench method, but now I don't need to....JohnW
No guarantee this will work for you, and of course you always risk damage with a bolt torqued on at over 300 foot pounds, but it worked for me....Again thanks for all the help....I was getting ready to try the belt/chain wrench method, but now I don't need to....JohnW
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#11
The breaker bar and starter are the ONLY way to easily get the bolt out we use this regularly. You will need a 1/2 or 3/4" breaker/ Dixie bar of about 2' long and a 6 point impact socket in good unworn order. If you look down the front of the engine to the left you will see the chassis leg and anti roll bar. Put the leg of the bar under these, make sure it is well caught and use a bungee to stop it waving about. Rotate the engine so the socket can fit snugly over the bolt. Remove the injector relay in the boot. With everything fitted and secure snap the ignition on for a second to give about 1 full turn. Check the set up is still OK and do this once more. The 'seal' on the bolt will be broken and it will be partly unscrewed. This is easy its putting the bugger back in that's difficult! I have a video somewhere of this being done to a 1998 xk8. There is surprisingly little drama.
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Don B (02-14-2024),
Truck Graphics (06-20-2018)
#12
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Hendirk (01-13-2021)
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