Remove fork tube from lower casting M600

m600jim · 28-10-2021, 01:45 PM

Hi, I have a 1997 M600 and one of the fork stanchions is badly pitted. I can get it rechromed but it looks like it's cheaper (and possibly easier) just to get a new fork stanchion e.g. this one - https://www.brooksuspension.co.uk/du...anchion-94-97/

My question is, how easy is it to get the casting off the bottom of the old stanchion and replace it on the new one? I can't see any pinch bolts etc holding it in place, is it threaded? Or is it push fit? Will I need loads to heat to remove it?

Can't find anything really relevant on the internet, has anyone tried this?

Thanks

Jim

Dukedesmo · 28-10-2021, 02:29 PM

Should be screwed on, there maybe a locking grubscrew somewhere? but either way it will be tight and stuck well with a combination of loctite and corrosion.

You will need some means of holding the tube securely without crushing it whilst applying plenty of brute force, a little heat may also help loosen the lock.

Darkness · 28-10-2021, 02:39 PM

They may come apart, though they take some persuasion.

Two questions: are they non-adjustable Marzocchi? That’s probably what they had when they left the factory, but people swap things.

What are the bolt centres on the front brake caliper mounts?

https://www.ebay.co.uk/itm/274830447...3ABFBMyPLR8Zhf

It may be a good time to talk to someone like Maxton to get the damping sorted to suit your weight too: https://www.maxtonsuspension.co.uk/f...onversions.htm

Darren69 · 28-10-2021, 03:02 PM

It's probably better to upgrade to some Showa adjustables, there's plenty on ebay. IIRC I think Buzzer had a set of S4R forks for sale recently.

slob · 28-10-2021, 03:25 PM

Check spindle size and caliper bolt spacing before splashing out on replacement forks.
Pro revalving is the way to go though, the adjustable Showas on Monsters aren’t great either.

Nasher · 28-10-2021, 03:32 PM

Have a read of this, particularly towards the end of page 2:
http://www.ukmonster.co.uk/monster/s...ad.php?t=58486

Oh, and Brooks Fecked me about.
I paid for next day delivery, and when it didn't arrive I was told that next day meant the day after they received it from their supplier.

The sales guy got very 5hitty with me when I said their website was misleading, and I got a lecture about how I should know they couldn't possibly stock everything for next day delivery.

Nasher.

m600jim · 28-10-2021, 04:05 PM

Quote:

Originally Posted by Darkness

They may come apart, though they take some persuasion.

Two questions: are they non-adjustable Marzocchi? That’s probably what they had when they left the factory, but people swap things.

What are the bolt centres on the front brake caliper mounts?

https://www.ebay.co.uk/itm/274830447...3ABFBMyPLR8Zhf

It may be a good time to talk to someone like Maxton to get the damping sorted to suit your weight too: https://www.maxtonsuspension.co.uk/f...onversions.htm

Yep they are non adjustable Marocchis - I saw the Showas on eBay but I guess one Showa and one Marzocchi leg would be bad!

Darren69 · 28-10-2021, 08:45 PM

Yea the Showa's aren't great but better than the Marzocchi. I guess you need to weigh up the cost of modded Marzo vs Showa. The spindle size and caliper bolt spacing will probably be different to what you have on the later ones, it's doable but again you need to weigh up the cost of new calipers, axle and wheel bearings. If the 600 is a keeper then maybe a worthwhile mod or if you plan to upgrade to a bigger Monster then just cut your losses and get a 900/1000/S4 and get alll the good stuff included.

28-10-2021, 01:45 PM	#1
m600jim Registered User Join Date: Oct 2021 Location: Bristol Bike: M600 Posts: 28	Remove fork tube from lower casting M600 Hi, I have a 1997 M600 and one of the fork stanchions is badly pitted. I can get it rechromed but it looks like it's cheaper (and possibly easier) just to get a new fork stanchion e.g. this one - https://www.brooksuspension.co.uk/du...anchion-94-97/ My question is, how easy is it to get the casting off the bottom of the old stanchion and replace it on the new one? I can't see any pinch bolts etc holding it in place, is it threaded? Or is it push fit? Will I need loads to heat to remove it? Can't find anything really relevant on the internet, has anyone tried this? Thanks Jim

28-10-2021, 02:29 PM	#2
Dukedesmo Registered User Join Date: Sep 2010 Location: Leics Bike: M900 Posts: 2,894	Should be screwed on, there maybe a locking grubscrew somewhere? but either way it will be tight and stuck well with a combination of loctite and corrosion. You will need some means of holding the tube securely without crushing it whilst applying plenty of brute force, a little heat may also help loosen the lock. __________________ M900, 916, LeMans II.

28-10-2021, 02:39 PM	#3
Darkness . Join Date: May 2007 Location: Stockbridge Bike: M900 Posts: 1,984	They may come apart, though they take some persuasion. Two questions: are they non-adjustable Marzocchi? That’s probably what they had when they left the factory, but people swap things. What are the bolt centres on the front brake caliper mounts? https://www.ebay.co.uk/itm/274830447...3ABFBMyPLR8Zhf It may be a good time to talk to someone like Maxton to get the damping sorted to suit your weight too: https://www.maxtonsuspension.co.uk/f...onversions.htm __________________ Original and Best since 1993 Last edited by Darkness; 28-10-2021 at 02:49 PM..

28-10-2021, 03:02 PM	#4
Darren69 Transmaniacon MOC Join Date: Sep 2013 Location: Sutton In Ashfield Bike: Multiple Monsters Posts: 6,091	It's probably better to upgrade to some Showa adjustables, there's plenty on ebay. IIRC I think Buzzer had a set of S4R forks for sale recently. __________________ Roast Beef Monster! Termignoni and Bucci - Italian for pipe and slippers! S4 Fogarty, S4R 07T, 748, Series 1 Mirage

28-10-2021, 03:32 PM	#6
Nasher Registered User Join Date: Jul 2014 Location: Portsmouth Bike: M900 Posts: 1,518	Have a read of this, particularly towards the end of page 2: http://www.ukmonster.co.uk/monster/s...ad.php?t=58486 Oh, and Brooks Fecked me about. I paid for next day delivery, and when it didn't arrive I was told that next day meant the day after they received it from their supplier. The sales guy got very 5hitty with me when I said their website was misleading, and I got a lecture about how I should know they couldn't possibly stock everything for next day delivery. Nasher. __________________ Heaven doesn't want me, and Hell is afraid I'll take over. Last edited by Nasher; 28-10-2021 at 03:36 PM..

28-10-2021, 03:25 PM	#5
slob . Join Date: Jul 2003 Location: East London Bike: Multiple Monsters Posts: 9,735	Check spindle size and caliper bolt spacing before splashing out on replacement forks. Pro revalving is the way to go though, the adjustable Showas on Monsters aren’t great either.

28-10-2021, 08:45 PM	#8
Darren69 Transmaniacon MOC Join Date: Sep 2013 Location: Sutton In Ashfield Bike: Multiple Monsters Posts: 6,091	Yea the Showa's aren't great but better than the Marzocchi. I guess you need to weigh up the cost of modded Marzo vs Showa. The spindle size and caliper bolt spacing will probably be different to what you have on the later ones, it's doable but again you need to weigh up the cost of new calipers, axle and wheel bearings. If the 600 is a keeper then maybe a worthwhile mod or if you plan to upgrade to a bigger Monster then just cut your losses and get a 900/1000/S4 and get alll the good stuff included. __________________ Roast Beef Monster! Termignoni and Bucci - Italian for pipe and slippers! S4 Fogarty, S4R 07T, 748, Series 1 Mirage