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clutch not holding pressure when depressed

828 Views 7 Replies 6 Participants Last post by  Motosickle
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hi everybody i'm new here i was wondering what i need to do about my clutch problem i bought my 86 gl1200 about 5 mos ago with 27,000 on the clock i changed the timing belts and a few other things so today was the first time i had really had it back together enough to ride (i consider the radio being out of it not being fully together lol) so anyway i left the yard on my jorney i stopped to get gas no problems then i stopped to see my gf at work for a minute went to leave and bam! no pressure on the clutch lever. i took off the res cover and it was full never trust a sight glass so i had to keep pumping the handle all the way home. so what should i do rebuild the master cylinder or the slave cylinder any help would be great.
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If it didn't loose fluid the problem is in the master cylinder.
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I would first start by changing the clutch fluid. Make sure to bleed all the air out of the clutch system.
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thanks so much for your help that will save me some money not having to order everything.:action:
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In the bottom of the master cylinder is a very tiny bleed back hole. Make sure it is clean.
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AZgl1500 wrote:
In the bottom of the master cylinder is a very tiny bleed back hole. Make sure it is clean.
I agree with making sure the bleed hole is clean however.................

Usually when the bleed hole is blocked, the clutch lever will be very difficult to pull in to the handle grip. It causes pressure to build up in the system. Seems his clutch lever is pulling in very easy which is a very strong indication of air in the system.
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Quickest way to check the small port is to pry the 'protector' out of the bottom of the reservoir and gently squeeze the handle. If you get a shot of fluid up out of the little hole it's open. Don't squeeze the lever too fast or you'll understand why Honda calls it a 'protector'. One other thing you can try is to tie the lever back to the handlebar and leave it there for a couple hours, sometimes that will clear the air out.
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from personal experience i found on my 1200. on mine, there was no fluid loss at the master cylinder, but i was losing fluid at the slave,unseen to anyone. i rebuilt the slave,very crusty inside.
once rebuilt and bled, no more clutch issues.

Robin
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