How to change the fork oil on a 1500


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How to change the fork oil on a 1500

Postby popogoof » Fri Jul 20, 2012 9:43 am



Any one have the correct procedure on changing
the fork oil on a 1988 GL-1500/6 without removing
the forks from the bike. I cannot find this info
in the service manual. PLEASE no smart a$$ answers
like on the GWRRA board.
Thanks,
popogoof@aol.com


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Re: How to change the fork oil on a 1500

Postby WingAdmin » Fri Jul 20, 2012 9:49 am

You can open the drain bolt at the bottom, pump the shocks up and down a few times to make sure they're empty. Then remove the cap from the top (it's spring loaded, so you need to give some force pushing down to avoid stripping threads out of the top as it is removed), pour some fork oil down until it runs clean out the drain hole (I like to heat it up first, so it's thin and flows easily out). Wait until that all drains, replace the drain bolt, fill the fork tube (mine specifies 12.7 oz on the right, 12.6 oz on the left), then pump the shocks up and down a few times. Once full, the oil level should be 7.6 inches from the top of the tube. Compress the spring and install the cap - that's probably the hardest part. There are tools to do this, lots of people have built their own - I think virgilmobile made a good one, as I recall.

I'm planning a fork rebuild on my bike this winter, so I'll be doing a how-to writeup at that time.
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Re: How to change the fork oil on a 1500

Postby popogoof » Fri Jul 20, 2012 11:50 am

Thank you. I never thought of flushing the tubes before re-filling.
popogoof
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Re: How to change the fork oil on a 1500

Postby TennX » Fri Jul 20, 2012 12:43 pm

WingAdmin wrote:You can open the drain bolt at the bottom, pump the shocks up and down a few times to make sure they're empty. Then remove the cap from the top (it's spring loaded, so you need to give some force pushing down to avoid stripping threads out of the top as it is removed), pour some fork oil down until it runs clean out the drain hole (I like to heat it up first, so it's thin and flows easily out). Wait until that all drains, replace the drain bolt, fill the fork tube (mine specifies 12.7 oz on the right, 12.6 oz on the left), then pump the shocks up and down a few times. Once full, the oil level should be 7.6 inches from the top of the tube. Compress the spring and install the cap - that's probably the hardest part. There are tools to do this, lots of people have built their own - I think virgilmobile made a good one, as I recall.

I'm planning a fork rebuild on my bike this winter, so I'll be doing a how-to writeup at that time.


Is this facing the bike or sitting on it....
Phil.......
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Re: How to change the fork oil on a 1500

Postby bjatwood » Fri Jul 20, 2012 1:07 pm

What WT. fork oil is everyone using on the forks?
ATF or Fork oil.... :?
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Re: How to change the fork oil on a 1500

Postby virgilmobile » Fri Jul 20, 2012 1:15 pm

I'll add on a little more info.
The direction is the same as your car.The throttle is on the right,even in Europe :D
The oil amount is different because the right fork has a part in it that the left one doesn't,at the end,both shocks will have the same "level" in the fork.
I made a "T" handle.Simple stuff,but it allows me to get my light mass to be able to compress the spring and turn the cap.I actually had to stand on the seat and lean on it.

The cap....I left the spring out and started the cap by hand,then marked the cap and fork at the position where the threads just start to catch.This made for a easy alignment starting point.
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Re: How to change the fork oil on a 1500

Postby TennX » Fri Jul 20, 2012 3:19 pm

I dont if theres room or even if it will work , but the VTX boys use a box end ratchet on the fork caps....says it gives them more leverage....just FYI
Phil.......
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Re: How to change the fork oil on a 1500

Postby harpmaniac » Thu Sep 25, 2014 2:55 pm

anyone know the size of the hex in the top of the cap?
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Re: How to change the fork oil on a 1500

Postby bcarnold » Thu Sep 25, 2014 6:18 pm

The fork caps are 17mm


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