Shortening the front forks on a 750LTD

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18 May 2012 00:35 - 18 May 2012 00:37 #523035 by Patton
Replied by Patton on topic Shortening the front forks on a 750LTD

Hatchet wrote:

650ed wrote: Did you loosen the top fork clamp bolt first ...

Yes, I most definitely did...Didn't help, though. That thing is in there solid....


Could apply dry ice to top of 44029 just before attempting to remove it.

Using a torch to apply heat to the upper fork tube before applying the dry ice might also help.
If top of tube is hidden inside the clamp, heat it underneath the clamp.
Another option is to loosen both top and bottom clamp bolts, and slide the clamp further down on the tubes (do this with both fork tubes) to expose tops of tubes above the clamp. Then tighten only the bottom clamps. This should result in better access to top of the fork tubes.

After all the above, repeat the torch heat to top of tube, and apply dry ice to top of 44029 just before attempting to remove it.

If 44029 remains stuck, apply Kroil or liquid wrench or PJBlaster or 50-50 acetone/ATF mixture where it may seep down into the threads. May require constant soaking for a day or so. Would be okay to wrap a small piece of rag around 44029 to remain soaked with the penetrant.

After all the soaking, try again with the heat and dry ice.

Good Fortune! :)

1973 Z1
KZ900 LTD
Last edit: 18 May 2012 00:37 by Patton.

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18 May 2012 09:26 - 18 May 2012 18:02 #523072 by turboguzzi
Replied by turboguzzi on topic Shortening the front forks on a 750LTD
ok, first bike, so here are few free tips,
1. impact wrenches are for cars, not bikes, never ever used one in 30 years of wrenching.
2. torque wrenches are for torquing down bolts, not releasing frozen ones, use a normal ratchet.
3. you dont hit wrenches, ratchets or whatever with mallets. Might look manly on "American chopper" but pros use a bar breaker or a tube extension.
4. best tip of all, use your head and plan ahead - bike almost fell over? think on how to counter the torque you apply to the wrench safely and without turning the bars till the steering stops (that you'll surely bend if cap is tight)
Last edit: 18 May 2012 18:02 by turboguzzi.

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18 May 2012 17:34 #523183 by Powerstroke_fan
Replied by Powerstroke_fan on topic Shortening the front forks on a 750LTD
And you probally need to check the torque calibration on that torque wrench as it might of been affected by trying to remove the bolts. I only use a torque wrench to torque bolts.If you didnt know there is a proper way to use a torque wrench to get accurate torques.

1980 kz1000B4 LTD- 1327cc 9-1 comp
Ported J model head
Psp-3x cams
RS 36s
Welded MK11 crank
Back-cut MK11 trans
MTC 2 stage lock up
Stretched 4-6 over running Hayabusa rear rim with 190 rear tire
Complete frame brace kit installed
And Much Much more- SOLD

2014- ZX14R all stock for now

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18 May 2012 18:59 #523206 by 650ed
Replied by 650ed on topic Shortening the front forks on a 750LTD
Big hammers should not be used on wrenches; their use should be limited to fine tuning carbs:

Attachment hammerA.jpg not found


1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
Attachments:

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26 Oct 2015 05:02 #695984 by objec123
Replied by objec123 on topic Shortening the front forks on a 750LTD
any update? howd the front end feel without the spacers?

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26 Oct 2015 13:14 #696048 by TexasKZ
Replied by TexasKZ on topic Shortening the front forks on a 750LTD

650ed wrote: Big hammers should not be used on wrenches; their use should be limited to fine tuning carbs:

Attachment hammerA.jpg not found


Unless you are working on a HD :whistle: Hence the nickname, Harley tool......

1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

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  • Tyrell Corp
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26 Oct 2015 13:27 #696051 by Tyrell Corp
Replied by Tyrell Corp on topic Shortening the front forks on a 750LTD
There is a thread here within the last year detailing how to shorten them properly without modifying the preload spacer.

I use an impact wrench on clutch centre nuts, no serious bike workshop would be without one.
Done them with 1 metre breaking bars and a nightclub bouncer mate ( like very powerful) but it is stupidity.

1980 Gpz550 D1, 1981 GPz550 D1. 1982 GPz750R1. 1983 z1000R R2. all four aces

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  • steveinwa
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26 Oct 2015 14:02 #696056 by steveinwa
Replied by steveinwa on topic Shortening the front forks on a 750LTD
Don't be wacking things they will pay you back and break, go to Harbor freight and buy a breaker bar for $15 bucks, I bought one for changing tires on my BMW z3 when I autocrossed it, it has a lot of leverage.
You can also just get a piece of pipe that will fit over your wrench but don't be using your torque wrench, it's amazing the leverage you get but just adding a couple feet to your wrench handle length.

β€œHe was old and wise, which meant tired and disappointed...”
― T.E. Lawrence

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26 Oct 2015 14:20 #696058 by Tyrell Corp
Replied by Tyrell Corp on topic Shortening the front forks on a 750LTD
off topic...The clever thing about an impact driver is it shakes the nut off, also excessive tourque can break clutch baskets, even with the holding tool -done it.

1980 Gpz550 D1, 1981 GPz550 D1. 1982 GPz750R1. 1983 z1000R R2. all four aces

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26 Oct 2015 16:57 #696077 by objec123
Replied by objec123 on topic Shortening the front forks on a 750LTD

Tyrell Corp wrote: There is a thread here within the last year detailing how to shorten them properly without modifying the preload spacer..

link?


link please

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