Crankshaft Holder

Submitted: Friday, Jun 26, 2009 at 18:56
ThreadID: 70184 Views:4876 Replies:5 FollowUps:12
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Vehicle Holden Frontera 3.2l V6



Hi All

Can anyone advise of an alternate tool or method to remove a crankshaft pulley.

GM instructions are to use a crankshaft holder 5-8840-0133-0 which is a Kent Moore Pulley Holder J-8614-01

Need info for the morning


Thanks
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Reply By: Member - Timbo - Friday, Jun 26, 2009 at 19:50

Friday, Jun 26, 2009 at 19:50
Put the car in gear and the handbrake on should hold it. Failing that, you can remove one of the timing belt covers and put a spanner on one of the timng belt pulleys on the camshaft.

I've heard of people sticking a socket & handle on the crankshaft pulley bolt, bracing the handle against the chassis rail and giving the starter a quick flick but it's NOT recommended (and you MUST be sure that this will undo the bolt rather than doing it up tighter!)

Good luck, they can be stuck hard sometimes!
AnswerID: 372008

Follow Up By: Member - Donks1 (NSW) - Friday, Jun 26, 2009 at 20:43

Friday, Jun 26, 2009 at 20:43
Not a good idea. Many a crankshaft has been snapped using this technique.

Besides, it think the question is more related to removing the pulley, not so much about undoing the bolt

Donks1
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FollowupID: 639278

Follow Up By: Member - Timbo - Friday, Jun 26, 2009 at 21:05

Friday, Jun 26, 2009 at 21:05
Which technique, the starter motor or putting the car in gear (or both)?

I thought he was asking about undoing the bolt because the question is about a crankshaft holder.
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FollowupID: 639281

Follow Up By: Member - Donks1 (NSW) - Friday, Jun 26, 2009 at 21:10

Friday, Jun 26, 2009 at 21:10
Bracing the handle of a ratchet or breaker bar against the chassis rail

Commodores are especially known for breaking crankshafts using this technique.

Also once the job is done, replace the crank bolt with a new one.
The stress of undoing it can cause it to break.

Donks1
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FollowupID: 639283

Follow Up By: Member - Timbo - Monday, Jun 29, 2009 at 11:09

Monday, Jun 29, 2009 at 11:09
Thanks Donks - I had heard it was not recommended but couldn't remember the reason.
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FollowupID: 639537

Follow Up By: Member - ross m (WA) - Monday, Jun 29, 2009 at 11:51

Monday, Jun 29, 2009 at 11:51
If the load from the starter can break the crank shaft,how else will you get it off?
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FollowupID: 639542

Follow Up By: Member - Donks1 (NSW) - Monday, Jun 29, 2009 at 19:43

Monday, Jun 29, 2009 at 19:43
A rattle gun is the recommended way

Donks1
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FollowupID: 639602

Follow Up By: Member - ross m (WA) - Tuesday, Jun 30, 2009 at 11:28

Tuesday, Jun 30, 2009 at 11:28
How is the torque from a rattle gun different to using the engine starter.

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FollowupID: 639674

Follow Up By: tim_c - Tuesday, Jun 30, 2009 at 14:25

Tuesday, Jun 30, 2009 at 14:25
Personally, I was wondering more about the rattle gun shock-loading the crankshaft (not to mention the oil pump, timing gear, cam shafts & valve gear, etc.), and it still doesn't solve the problem of preventing the crankshaft from turning while you try to undo the pulley bolt.
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FollowupID: 639693

Follow Up By: Member - ross m (WA) - Tuesday, Jun 30, 2009 at 16:15

Tuesday, Jun 30, 2009 at 16:15
I put them in 5th gear low range with the handbrake on if Im using a bar
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FollowupID: 639705

Follow Up By: tim_c - Tuesday, Jun 30, 2009 at 18:12

Tuesday, Jun 30, 2009 at 18:12
Wouldn't 5th gear HIGH range be better? The higher the gear, the more fore you'll need to put on the bar before the wheels will turn - isn't this why you use 5th gear in the first place?!
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FollowupID: 639724

Follow Up By: tim_c - Tuesday, Jun 30, 2009 at 18:13

Tuesday, Jun 30, 2009 at 18:13
should have read:
"The higher the gear, the more forCe you'll need..."
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FollowupID: 639725

Reply By: WVB - Friday, Jun 26, 2009 at 22:35

Friday, Jun 26, 2009 at 22:35
Hi,
an alternative method is locking the crank with a stout screw driver blade inserted into the ring gear and against the bell housing after either the starter motor or the lower flywheel cover is removed.

assuming you can get the crankshaft bolt undone, the pulley maybe one that is keyed and comes off by hand. Not knowing the engine specifically, a lot of japanese cambelt engines and i think is an isuzu engine, have a hand push fit between the pulley and the crank nose allowing it to come away relatively easily.
hope this helps.
regards
michael.
AnswerID: 372030

Reply By: ROGER G - Saturday, Jun 27, 2009 at 08:28

Saturday, Jun 27, 2009 at 08:28
Thanks guys several different ideas there I 'll see how it goes.

Another question though

How does one remove the Serpentine belt tensioner assy ?

Is it with an allen key at the pivot point or just the bolt holding the rolller?

thanks
AnswerID: 372044

Reply By: ROGER G - Saturday, Jun 27, 2009 at 09:43

Saturday, Jun 27, 2009 at 09:43
Hi

Can anyone advise if the crankshaft bolt is a left hand thread as as I am trying in vein to remove it anti clock wise and all i am doing is bending my 8mm bolts in the pully that i am using to secure my metal bar.

thanks

Ps sussed the serpentine tensioner 1 hex bolt and 1 allen bolt
AnswerID: 372056

Follow Up By: trainslux - Saturday, Jun 27, 2009 at 13:31

Saturday, Jun 27, 2009 at 13:31
Put the socket on the nut with the breaker bar hanging down, so it wont hit anything apart from the chassis rail.

Flick the starter, you will hear a bang, and a clank as the bar and socket fall off.

One undone crank bolt, remove with ease.

Done 100's of bolts this way.

Trains

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FollowupID: 639341

Reply By: Member - Timbo - Monday, Jun 29, 2009 at 11:24

Monday, Jun 29, 2009 at 11:24
Roger, perhaps a little late since it sounds like you were trying to do this job on the weekend just been, but here is some helpful information:
appears to be instructions from Isuzu workshop manual
and
a very detailed description (with photos) by someone with first-hand experience
AnswerID: 372294

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