-
Hey Guest!
British Car Forum has been supporting enthusiasts for over 25 years by providing a great place to share our love for British cars. You can support our efforts by upgrading your membership for less than the dues of most car clubs. There are some perks with a member upgrade!**Upgrade Now**
(PS: Upgraded members don't see this banner, nor will you see the Google ads that appear on the site.)
Hey - did you know if you click on the title of a thread it will take you to the first unread post since you last visited that thread?
but were afraid to ask: 
STOP!! Never post your email address in open forums. Bots can "harvest" your email! If you must share your email use a Private Message or use the 
smilie in place of the real @
Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
Spitfire spitfire mk3 '70 brake pressure switch pdwa
- Thread starter cutlass29
- Start date
Share this page
Offline
Paraphrased from the factory workshop manual:
* Fit a rubber tube...to a brake bleed-screw at the opposite end of the car to that which has just been bled.
* Open the bleed-screw.
* Switch the igntion on but DO NOT START THE ENGINE. (The brake warning light will glow but the oil warning light will remain extinguished.)
* Exert a steady pressure on the brake pedal until the brake light dims and the oil light glows (A click should be felt on the pedal as the shuttle [in the PDWA] returns to its mid-position].
* Tighten the bleed-screw.
NOTE: If the pedal has been pushed too hard [or the wrong side of the system was bled] the shuttle will move to the other side of the valve, thus requiring the procedure to be repeated on a brake at the opposite end of the car.
Some folks clamin success by undoing the sender for the light from the PDWA, and then manipulating the shuttle with a screwdriver. I prefer this method. It takes a bit of practice to "feel" what happens, but you'll know it when you feel it.
* Fit a rubber tube...to a brake bleed-screw at the opposite end of the car to that which has just been bled.
* Open the bleed-screw.
* Switch the igntion on but DO NOT START THE ENGINE. (The brake warning light will glow but the oil warning light will remain extinguished.)
* Exert a steady pressure on the brake pedal until the brake light dims and the oil light glows (A click should be felt on the pedal as the shuttle [in the PDWA] returns to its mid-position].
* Tighten the bleed-screw.
NOTE: If the pedal has been pushed too hard [or the wrong side of the system was bled] the shuttle will move to the other side of the valve, thus requiring the procedure to be repeated on a brake at the opposite end of the car.
Some folks clamin success by undoing the sender for the light from the PDWA, and then manipulating the shuttle with a screwdriver. I prefer this method. It takes a bit of practice to "feel" what happens, but you'll know it when you feel it.