C
Constantine
Other than the calipers, is there any other item that has to be bled
after installing a new master cylinder and new calipers?
Constantine
after installing a new master cylinder and new calipers?
Constantine
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User
If you fill the master cylinder reservoir and bench bleed it before youpolites1 said:Other than the calipers, is there any other item that has to be bled
after installing a new master cylinder and new calipers?
Constantine
install it then there is no need to bleed the calipers, except to flush
the system (good SOP). If you didn't bench bleed the master cylinder
then you will have to bleed it now, to evacuate all the trapped air in
the cylinder. Use your tool and open each of the line nuts coming from
the mc, one at at time starting from the back, until the fluid is bubble
free, c;pse the nuts. Check the pedal, should be solid. If it doesn't
firm up then bleed the calipers again. Make a bleed bottle. Use an empty
gatoraid bottle and drill a hole in the cap. Find some clear plastic
(vinyl) hose that fits snugly over the bleed screws, enlarge the hole in
the bottle cap to fit, drill an additional small breather hole in the
cap. Pour some clean brake fluid in the bottle. Submerge one end of the
hose beneath the fluid level in the bottle. Connect the other end to the
bleed screw. Open the bleed screw and either use your tool to pressure
bleed the system or simply pump the pedal slowly, by hand. You don't
need to shut the bleed screw between pumps since any air pushed out of
the system will not travel back up the tube as long as the open end is
submerged.
Bob
O
Olav Alexander Mjelde
Constantine said:Other than the calipers, is there any other item that has to be bled
after installing a new master cylinder and new calipers?
Constantine
Hi, when bleeding the 240 (it's a 2 circuit brake design), you have to first
bleed the left, rear wheel.
Pump the pedal untill it's hard, then yell at your homebuy who is hanging out
by the wheel.
He will then open the bleed-valve and you will press the pedal with "perfect
force".
You do not want to completely floor the pedal and you do not want to get off
the pedal, untill your friend has closed the valve.
After the left, rear caliper is air-free, you have to move on to the right
front, lower to valves.
They have to be opened at the same time(!).
When this is done, you have to bleed both the lower, left valves (front, again).
After that, you go to the right, rear wheel, bleed that valve.
When that valve has been bled, you go to the left, front, upper valve.
Afterwards you take the upper, right valve (front, again)
C
Constantine
Thanks for the details, they were very helpful.
Constantine
Constantine