Rokhead
New member
- 2
- 0
- 0
- Location
- Jacksonville, FL
The time came this weekend to replace the airpack on the deuce. I had soft brakes (truck needs to be bled wvery 2-3 months from a leak) so I make a pressure sprayer bleeder and it did a fine job bleeding out the dot 3/4 and neon yellow silicon brake fluid blend that was in the truck. I pushed new DOT 3/4 they the system since that's what I'd prefer to run and flush the system every year or so.
after the bleed session, I started the truck and had brake fluid blowing out the vent line on the passenger fire wall and couldn't make more than 30 psi air pressure. Traced it back to the airpack and I figured something was worn out. My buddy down the road had a rebuilt airpack I swapped in, but is has a big round yellow sticker that reads "retrofit". Anyone know what this means?
i opened the old air pack and there was gummy orings that were in pieces....problem identified. Just like ethanol eats carburetor rubber
What would have caused the oring deterioration? Dot 3/4?. Does retrofit mean there is old style orings that modern brake fluid could eat? I haven't hooked up the hydraulic portions of the brakes yet.....looking for advice. Run dot 3/4 and flush it again in a few months, or go DOT 5 because yellow retrofit sticker means I have too.
thanks!
after the bleed session, I started the truck and had brake fluid blowing out the vent line on the passenger fire wall and couldn't make more than 30 psi air pressure. Traced it back to the airpack and I figured something was worn out. My buddy down the road had a rebuilt airpack I swapped in, but is has a big round yellow sticker that reads "retrofit". Anyone know what this means?
i opened the old air pack and there was gummy orings that were in pieces....problem identified. Just like ethanol eats carburetor rubber
What would have caused the oring deterioration? Dot 3/4?. Does retrofit mean there is old style orings that modern brake fluid could eat? I haven't hooked up the hydraulic portions of the brakes yet.....looking for advice. Run dot 3/4 and flush it again in a few months, or go DOT 5 because yellow retrofit sticker means I have too.
thanks!