crtbc
03-26-2008, 02:59 PM
When bench bleeding is it the same rule of thumb when bleedin at the wheels... ie dont push the petal in all the way to the floor, only go 1/2 way....
1)Do I only push the MC rod in about an inch or so and then let it return or push it all the way since it's a new MC???
2)How long does the whole process usually take
3)Anyone bench bleed in a can full of brake fluid so I dont need the "bench bleeding kit" or is putting my finger over the holes sufficient when the piston is returning to avoid air intake
Thanks.... I know I'm not worthy but please take pitty
Offrhoder4x4
03-26-2008, 04:28 PM
1. Rod in all the way and back out...slowly.
2. However long it takes until you no longer see air bubbles...normally less than a min or 2.
3. As in submerging the entire MC? Messy, but it would work.
Most new MCs come with a bleeding kit in the box. Did your's not? Personally, I would rather just pay the few bucks for a bleeding kit than make a huge mess of everything.
HUSSLR187
03-26-2008, 08:08 PM
1)Do I only push the MC rod in about an inch or so and then let it return or push it all the way since it's a new MC???
pushing in one inch as the instuctions says is bullshit you dont even begin to bleed the back brake res. do it like you would your oldlady except slow until all the air is out
NetBSD
03-26-2008, 09:07 PM
i see and read alot about this, is this only for certain rigs or all fo them? when i did my 78 f150 i just tossed the new one on and did it normally, worked perfect
Bubba_Jeep
03-26-2008, 09:19 PM
An important step to remember when "bench" bleeding is the MC needs to set level. You can "bench" bleed in the vehicle, if you can get the MC level. This is to insure air bubbles do not get trapped at the front end of the MC bore.
You can push the plunger all the way in. The reason you do this with a new cyl. is because fluid has not filled between the primary and secondary piston. Under normal conditions, the primary piston pushes a volume of fluid against the secondary piston, moving it through its stroke. New cyl. have no fluid between pistons, so you need to push further so the secondary piston draws fluid. With that said, use the kit supplied with new cyl. If you dont, you will fighting to not suck air back in when piston returns to rest position.
I agree that dunking in brake fluid would work, but way to messy.
Good Luck.