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kaka
 Post subject: No gears
PostPosted: Sun Dec 17, 2017 12:32 pm 
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848cc
848cc

Joined: Wed Mar 28, 2007 4:20 pm
Posts: 194
Location: Brisbane
My mini doesn't get used much. When I first drive it the gears are easy to select. After about 10 minutes driving, the gears become hard to select then soon after I can't select any gears. When the gear selection becomes hard and then nothing, the the clutch pedal feels soft to nothing, not nice and firm through the entire motion.
After about half an hour resting, It is good to go again through the cycle described.
Any ideas what's happening or needed to fix?
Thanks
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drmini in aust
 Post subject: Re: No gears
PostPosted: Sun Dec 17, 2017 12:46 pm 
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Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39639
Location: near Baulkham Hills, NSW
Top up the clutch master cylinder and bleed it at the slave cylinder nipple.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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kaka
 Post subject: Re: No gears
PostPosted: Sun Dec 17, 2017 2:00 pm 
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848cc
848cc

Joined: Wed Mar 28, 2007 4:20 pm
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Location: Brisbane
Thanks Dr, did that yesterday. Took the car for a drive today. Returned to the same scenario after ten minutes driving
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drmini in aust
 Post subject: Re: No gears
PostPosted: Sun Dec 17, 2017 2:37 pm 
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Location: near Baulkham Hills, NSW
When you bleed it did air come out? If so, do it again. If more air comes out the slave cylinder is sucking air. Some aftermarket slave cylinders (the cheapo ones) have no seal spreader like originals did.
Genuine AP cylinders still do.
Alternatively, PM me your address and I will send you a seal spreader. They are unavailable from Mini parts suppliers.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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DavidE
 Post subject: Re: No gears
PostPosted: Sun Dec 17, 2017 4:15 pm 
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998cc
998cc

Joined: Mon Jan 12, 2015 10:59 pm
Posts: 966
Location: Holt ACT
drmini in aust wrote:
When you bleed it did air come out? If so, do it again. If more air comes out the slave cylinder is sucking air. Some aftermarket slave cylinders (the cheapo ones) have no seal spreader like originals did.
Genuine AP cylinders still do.
Alternatively, PM me your address and I will send you a seal spreader. They are unavailable from Mini parts suppliers.


This "collector" has a little stockpile.
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kaka
 Post subject: Re: No gears
PostPosted: Sun Dec 17, 2017 4:19 pm 
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848cc
848cc

Joined: Wed Mar 28, 2007 4:20 pm
Posts: 194
Location: Brisbane
The slave cylinder is the original Lockheed. Might take it to the brake shop tomorrow for a rekit and see if that makes any difference.
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drmini in aust
 Post subject: Re: No gears
PostPosted: Sun Dec 17, 2017 5:29 pm 
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Hone it and fit a new seal and boot. The seal is a std 7/8" cup, any brake shop would have one for $5.
I have never ever bought a new slave cylinder for my Minis. :wink:

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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kaka
 Post subject: Re: No gears
PostPosted: Sun Dec 17, 2017 5:50 pm 
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848cc
848cc

Joined: Wed Mar 28, 2007 4:20 pm
Posts: 194
Location: Brisbane
Will let you know how I get on.
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kaka
 Post subject: Re: No gears
PostPosted: Thu Dec 21, 2017 12:15 pm 
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848cc
848cc

Joined: Wed Mar 28, 2007 4:20 pm
Posts: 194
Location: Brisbane
Fixed the slave cylinder. Good to go again.
Thanks for the assistance.
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9YaTaH
 Post subject: Re: No gears
PostPosted: Thu Dec 21, 2017 1:32 pm 
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1360cc
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Posts: 12390
Location: Sthrn HiLoLands, NSW, Australia
Have a good look at the flexible hose going to the slave cylinder as well...if old and perished, think about replacing it :-)

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