Lehman Monarch II Rear Brake Bleeding Procedure
Once you have introduced air into the linked brake system, there are no shortcuts to bleeding the system. This REQUIRES two people to complete properly. I have found that using a vacuum bleeder is a great way to flush the system but does not help in removing all of the air.
Preparation:
Remove rear wheels for access to caliper bleed screws,
Remove front fender and wheel caliper covers,
Remove the bolt for the rear brake fluid reservoir for ease of access.
One person will operate the pedal, the other will bleed the brake system. Two easy pumps and hold prior to opening the bleed screws. The bleed screws are delicate on the rear calipers so don’t over-tighten or you may break the caliper itself. You only need to open the screws enough to let air out and by paying close attention you can hear air escape during each bleed.
Procedure:
Give command to pump ( two times) and hold prior to opening each fitting.
Continue at each location until fluid is visibly flowing and proceed to next location.
Make sure that fluid reservoir is maintained during the procedure.
1) Right rear caliper upper bleeder until fluid is present, then lower bleeder,
2) Left rear caliper upper bleeder until fluid is present , then lower bleeder,
3) Left front caliper 8mm bleed screw until fluid is present ,
4) Left front anti-dive bleed screw until fluid is present,
5) Right front caliper 10mm bleed screw until fluid is present .
(Note) It take a while for any air to be chased out the front of the system. That is why this procedure cannot be performed just once.
1) Right rear caliper upper bleeder until steady fluid flow, then lower bleeder,
2) Left rear caliper upper bleeder until steady fluid flow , then lower bleeder,
3) Left front caliper 8mm bleed screw until steady fluid flow,
4) Left front anti-dive bleed screw until steady fluid flow ,
5) Right front caliper 10mm bleed screw until steady fluid flow.
Repeat above procedure at least two times until pedal is solid and does not pump up.
Focus attention to the front because the air you are chasing has a long way to escape at the front wheel.