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SV: [T3] 73 Front Brakes on a '70


Thanks a lot, Dave.
Great (and understandable) info! That will really help.

/Karl-Olov 

> -----Ursprungligt meddelande-----
> FrŒn:	Dave Hall [SMTP:dave@hallvw.clara.co.uk]
> Skickat:	 den 4 december 1998 02.07
> Till:	Sandin, Karl-Olov; jadney@vwtype3.org
> Kopia:	type3@vwtype3.org
> €mne:	Re: [T3] 73 Front Brakes on a '70
> 
> Type 36 with 4 piston calipers
> Bleeding the brakes
> The system can be bled either by pumping the pedal or by using a
> pressure bleeding appliance.  The correct sequence is as follows:
> 
> 1 - Right rear wheel cylinder.
> 2- Left rear wheel cylinder.
> 3- Right caliper, outside (bleeder screws 1 and 2).
> 4- Right caliper, inside (bleeder screw 3).
> 5- Left caliper, outside (bleeder screws 1 and 2).
> 6- Left caliper, inside (bleeder screw 3).
> 
> ASCII rendition of bleed nipple layout (picture shows left-hand
> caliper), looking at pad spreader spring:-
> 
>   1
> 4 2         3  5
>                    6
> 
> (6 is the lowest one and 1 sticks upwards;  not sure if the
> right-hand caliper is identical, but it must be obvious or they
> would show both as they do for the K70).
> 
> Note
> The screws 4, 5 and 6 are only for brake fluid changing and must not
> be opened when bleeding the brakes.
> 
> Changing brake fluid
> 
> 1 - Pump fluid out through bleeder screws in rear wheel cylinders.
> 2 - Open screws 4, 5 and 6 on both front wheels and pump out more
> fluid,
> 3- Open screws 1, 2 and 3 and leave them open until fluid no longer
> drips from screws 4, 5 and 6.
> Put new fluid in and bleed system as explained above.
> 
> 
> Source:  VW Factory Workshop Manual, 1969 edition (Supplement 8/72)
> Brakes, Wheels, Tires, Hand and Foot Controls.  (VW 'God' to us!)
> 
> Dave.
> UK VW Type 3&4 Club
> www.hallvw.clara.net/
> -----Original Message-----
> From: Sandin, Karl-Olov <Karl-Olov.Sandin@MoDoSkog.MoDoGroup.com>
> To: 'jadney@vwtype3.org' <jadney@vwtype3.org>
> Cc: 'type3@vwtype3.org' <type3@vwtype3.org>
> Date: 02 December 1998 12:48
> Subject: Re: [T3] 73 Front Brakes on a '70
> 
> 
> >Jim Adney wrote:
> >>>
> >>Cool is right!  I never thought I'd ever get to hear about one of
> >>those.  Do you know the diameter of the pistons?  I doubt the
> braking
> >>power is any different, just the safety thing.
> >>>
> >
> >Hello Jim!
> >I have measured the pistons for you, and the diameter is 30 mm. The
> calipers
> >have 6 (six!) bleeder valves...only God knows in which order I
> should bleed
> >this system... Don't really need to - just want to change the
> fluid. Any
> >hints?
> >
> >You are probably right about the safety thing. It seems to be a
> full
> >triangular split system just as on the Volvo. The MC is special on
> this
> >model.
> >See excellent scheme from Dave Hall, publiced by Greg, on this
> page:
> >http://vwtype3.org/scrapbook/4pot/
> >
> >
> >-Too-de-loo-o ...   :-)
> >
> >/Karl-Olov Sandin
> >-73 Squareback
> >(- I always knew she was someting special...)
> >
> >-------------------------------------------------------------------
> >List info at http://www.vwtype3.org/list or mailto:help@vwtype3.org
> >


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