Better be aware of this! I had a licensed tech replace both front
calipers on a 1987 240, he tried pumping brakes then later opening the
bleeders because he had no one helping him till eventually I guess the
master cylinder gave up working, even though was working fine before.
while that was happening the porportioning valve was flipped and
bleeding was very difficult. The car was still not working properly when
the new master was installed by another more experienced mechanic. He
did some more tests like cutting off brake fluid to calipers (one at a
time) found that I had been sold a defective caliper. so after a week I
received my car back with about 85% brake efficiency. What does that
mean, basically a job I thought would be only $200.00 CDN grew to about
$800.00 CDN as more lines were subsequently broken( have you considered
what all lines would set you back) flex hoses (4) for the front around
$135.00 plus GST and PST then 4 brake pipes (I do not advise trying to
make up your own the shapes as they are hard to simulate) so cost was
about $120.00 CDN (having said all that I recommend not doing the
typical pumping brake pedal and opening bleeders rather use a bleeding
kit, I truly feel you might avoid some unnecessary added expense. Hey I
would be very curious knowing how everything turns out for you. Remember
this: the climate changes here in Toronto Canada takes its toll on all
underbelly components. You may get lucky if your climate is dry and
warm and you drive on salt free roads.
Please let me know!
Dan