Interestingly I just had to reset my PDWA this week.
I had slowed to a crawl at a stoplight, looked left and right for cars and
pedestrians, then proceded when a kid on a bike came flying down the
sidewalk as I was about to make a right hand turn. I jumped on the brakes,
as did he. We missed, I swore, he rode away. (bike riding on sidewalks is
illegal here!)
I noticed afterward that the Brake light had come on - obviously the PDWA
had shifted.
I started by bleeding the front left brake - no luck. Bled the left rear
brake and light went out. (I used the left side only for convienience in a
one-man operation.).
I only pressed the pedal very lightly to recentre the PDWA. I've done this
in the past where pumping the brake, as if doing a proper bleed, causes the
PDWA to snap to the opposite end leaving you confused as to what is wrong.
Moral - look for dumb kids on bikes, and
press the brake pedal LIGHTLY when recentering the PDWA.
Cheers, Fred
----- Original Message -----
From: "Philip Warburton" <cplimey@shaw.ca>
To: "SPIT mail list" <spitfires@autox.team.net>
Sent: Sunday, September 08, 2002 9:23 PM
Subject: Re:PDWA question
> Not sure if I can shed any light but let me tell you of my problem.
>
> I can't get my PDWA light to go off either and I have done as you did on
> front and rear brakes separately. I will have to investigate further, but
I
> would suggest that you re-bleed your brakes starting with the rear right
> (assuming you have a LHD) and working to the front left. Give several
pumps
> after the fluid appears to have no bubbles because you can be surprised
> sometimes. Also, make sure the rear of the reservoir is full not just the
> front as air can get in that way too (I am assuming too that you have the
> same kind of large cap reservoir as I do on my '75).
> Then try the brakes again.
> If it works, you are one step ahead of me!!
>
>
> Cheers,
>
> *** Philip ***
> 1975 Spitfire 1500 - FM32468U
> (otherwise known as CJ)
>
> **************************
>
>
>
> > Greetings, Fellow Listers!
> >
> > The PDWA has been off center in Lazarus, the resurrected Spitfire, since
he
> > was reassembled in early July. I finally decided to fix the problem. I
> > cracked open a rear Speedbleeder and pumped the pedal about 3 times
before I
> > heard the PDWA click and the warning light went off. I closed the
bleeder
> > and topped up the m/c. Took a test drive and immediately noticed
> > significant differences in the way the brakes worked. The pedal engages
> > noticeably closer to the floor, is less firm, and requires less "leg" to
> > stop the car. My understanding from all of the previous PDWA
discussions on
> > this list is that the position of the PDWA shuttle doesn't effect the
> > function of the brakes, just turns on the light. Yet I'm seeing a
> > significant change in the brakes. For those suspecting air in the
lines, I
> > did maintain the fluid level in the m/c during my 3 pumps. Any pearls
of
> > wisdom out there, or am I just confused? (a normal state of mind for
me)
> > TIA.
> >
> > BillG
> >
> > '74 Spit Lazarus
> > '73 Spit Rip
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