Anti-Lock Brakes For Legacy

We have received calls on the Technical Service Helpline concerning the hydraulic unit bleeding procedure for a "Bosch" type hydraulic unit. This information plus corrected information for the Nippon system can be found in the "ABS" Supplement Manual MSA5T9023D or in the 1992 Legacy Service Manual. The Bosch type hydraulic unit does not have plugs for bleeding the air from the solenoid valves like the Nippon unit has. In order to bleed air from solenoid valves you must loosen the brake line to one solenoid valve at a time while energizing the hydraulic unit. Also, use Service Bulletin 06-24-91 Dated 08-15-91, "Secondary Side Bleeding of ABS Hydraulic control Unit: to engage the hydraulic unit ground terminals 1 and 2 and power terminals 11 and 12 of connector F9.

NOTE:
DO NOT RUN THE HYDRAULIC UNIT FOR MORE THAN FIVE SECONDS OR THE UNIT MAY BECOME PERMANENTLY DAMAGED.