--Previous Message--
: Outstanding Doug. Great info -
: especially on the air absorption. I
: think I'll be OK.
:
: I have new rear cylinders; rebuilt the
: front calipers and all master
: cylinders. The PDWA was disassembled
: and cleaned. All the components were
: "prepped" with the DOT 5.
: Unfortunately, I already bought all new
: brake hoses, so we'll see about this
: "spongy-ness" issue once I
: get to drive her. Probably upgrade to
: the SS braided hoses afterward.
:
: The hard lines are my main concern, as
: all I can do to them is give them a
: flush. You wouldn't BELIEVE the junk
: that came out of the transfer line to
: the right rear - incredible. Given the
: amount of gunk in there, it's hard to
: understand why the other lines seemed
: clear.
:
: Ciao - Jim
:
: --Previous Message--
: Using brake cleaner as a flush will
: certainly work. However, I think most
: people use isopropyl alcohol.
: Regardless, blow through the system
: with low pressure dry air to get rid of
: whatever you flushed with.
:
: Replace all the old rubber. All of it.
: This applies particularly to the flex
: hoses to the wheel cylinders/calipers.
: The master cylinder should be rebuilt
: with new seals also. You probably
: cannot get the seals for the PDWA so
: cross your fingers.
:
: Any old rubber in the system may behave
: unpredictably. It may swell or it may
: sluff off black goo into the system.
: You don't want either to happen.
:
: DOT-5 will not mix with DOT-3/4 so any
: left in the system will collect in
: pools. I don't know what really bad
: effect that would have but I know it is
: advised against leaving any old fluid
: in the system.
:
: DOT-5 also traps air easily and can
: make for a squishy pedal. Two things
: help. When pouring the fluid into the
: master cylinder, use a long, clean
: screwdriver inserted into the MC
: reservoir. Pour the new brake fluid
: gently onto the shank of the
: screwdriver so it runs slowly into the
: reservoir without splashing. Not only
: will this prevent a mess but it
: minimizes any bubbles in the system.
:
: When you replace those flex lines, use
: the stainless overbraided hoses. They
: help maintain a firm pedal with DOT-5.
:
: Doug L.
:
:
:
:
: --Previous Message--
: Hi all,
:
: I also started rebuilding the brake
: system this weekend. I'm switching to
: DOT 5 silicon fluid so I'll never have
: to see all that wrinkling paint around
: my master cylinders again. Use of DOT
: 5 requires flushing the original fluid
: out - it's not compatible with any
: other DOTs.
:
: After the system was completely
: disassembled I flushed each length of
: brake line with spray brake cleaner.
:
: For those of you familiar with DOT 5:
:
: - Is this sufficient enough of a flush?
: - What happens when DOT 5
: "does" encounter some other
: DOT fluid in your system?
:
: Got plenty of time to mull this over.
: Won't be able to get to the project
: until sometime next year.
:
: Ciao! - Jim
:
:
:
:
:
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