[ROVERNET - UK] Bleeding brakes!
Steven Dibdin
sdibdin at hotmail.com
Wed May 2 23:14:17 BST 2007
Hi Slats,
I did follow your advice, it was your posting that gave me the idea of
trying the mity vac.
Thanks,
Steven
>From: "Slatskars" <slatskars at comcast.net>
>Reply-To: rovernet at lyris.ccdata.com
>To: <rovernet at lyris.ccdata.com>
>Subject: Re: [ROVERNET - UK] Bleeding brakes!
>Date: Wed, 2 May 2007 14:18:08 -0700
>
>Hi Steven,
>
>I did mention in an earlier e-mail a couple of weeks ago, that when using
>the Mity-vac, you had to seal around the threads of the bleeder valve to
>prevent air from being drawn in at that point. I used grease, but it would
>probably be a good idea to use teflon tape on the fittings. I ran into this
>problem when bleeding the brakes on a 74 MGB. On the rear drums, the
>Mity-vac worked fine, but would not work at all on the front calipers. Kept
>drawing fluid with bubbles.
>
>Slats
>----- Original Message ----- From: "Steven Dibdin" <sdibdin at hotmail.com>
>To: <rovernet at lyris.ccdata.com>
>Sent: Wednesday, May 02, 2007 1:06 PM
>Subject: Re: [ROVERNET - UK] Bleeding brakes!
>
>
>>Hi Slats,
>>
>>Intreging solution. I'll do some research, it may make sense to have a go
>>at making one. Thanks for the tip.
>>
>>Regards,
>>
>>Steven
>>
>>
>>>From: "Slatskars" <slatskars at comcast.net>
>>>Reply-To: rovernet at lyris.ccdata.com
>>>To: <rovernet at lyris.ccdata.com>
>>>Subject: Re: [ROVERNET - UK] Bleeding brakes!
>>>Date: Wed, 2 May 2007 12:49:54 -0700
>>>
>>>Just thought that I would mention another way of servicing brakes and
>>>clutches. That is to use a pressure vessel loaded with brake fluid and
>>>force it backwards from the wheel or slave cylinders. I had extreme
>>>difficult bleeding a clutch system once (no check valve) and use this
>>>method. Worked like a champ. I rented a pressure system from a brake shop
>>>for a few hours. Keep meaning to make one.
>>>
>>>Slats
>>>----- Original Message ----- From: "Roger.Matheson"
>>><roger.matheson at bigpond.com>
>>>To: <rovernet at lyris.ccdata.com>
>>>Sent: Wednesday, May 02, 2007 6:34 AM
>>>Subject: Re: [ROVERNET - UK] Bleeding brakes!
>>>
>>>
>>>>Hi Steven,
>>>>
>>>>When you refer to a mity vac, does this mean a vacume device sucking
>>>>fluid through from one of the callipers? I have found air pressure
>>>>effective. I made up a new cap for the resevoir and connected it to 5
>>>>lbs air pressure. Releasing a blead screw allows the compresed air to
>>>>push the fluid through. Obviosly you need to watch the level of fluid
>>>>but you can move a lot of fluid quickly with this technique. The last
>>>>time I bled a recon servo I connected a resevoir with a little fluid in
>>>>it with a short pipe above the servo outlet. Pumping the pedal through
>>>>full strokes very quickly eliminated air which I could see as bubbles in
>>>>my dummy resevoir. From what you say it seems that there is still air in
>>>>the second servo.
>>>>
>>>>Use spare blead screws in the outlets of the master (same thread) A
>>>>solid pedal will confirm the master is OK. With air out of the servos
>>>>by the above technique, lack of pedal can only mean air in the lines and
>>>>in the callipers. Use the compressed air method, push fliud out of the
>>>>rear bleader (90% of the contents of the resevoir should be enough to
>>>>change the total volume in this circuit. Do the same with the front
>>>>(furthest from the servos then the front nearest).
>>>>
>>>>If you still have no pedal then there must be a fault in the seals/bores
>>>>of the master and or the servos, or there is excessive play betwen the
>>>>pads and disks. Are there any leaks or bulging in the flexible pipes at
>>>>he callipers? Have you been using fresh fluid each time (fluid used for
>>>>bleading can contain small air bubbles). I have not found it necessary
>>>>to start the engine, or raise the rear. In relation to previous
>>>>discussions, the blead screw on the rear is of course lower than the
>>>>inlet pipe Stand well and trully corrected.
>>>>
>>>>Cheers Roger
>>>>
>>>>----- Original Message ----- From: "Steven Dibdin" <sdibdin at hotmail.com>
>>>>To: <rovernet at lyris.ccdata.com>
>>>>Sent: Wednesday, May 02, 2007 4:14 AM
>>>>Subject: [ROVERNET - UK] Bleeding brakes!
>>>>
>>>>p://autos.groups.yahoo.com/group/Rover_net/
>>>
>>>
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>>
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>
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