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CAUTION: Vacuum in power brake booster must be any contamination as master cylinder is removed. This can be done simply by pumping (4) With engine not running, pump brake pedal until a firm pedal is achieved (4-5 strokes). (5) Remove nuts fastening coolant recovery bottle in place and reposition bottle with hoses attached out CAUTION: Before removing master cylinder from (6) Thoroughly clean all surfaces of brake fluid reservoir and master cylinder, paying special atten- t Brake Parts Cleaner or equivalent. (7) Disconnect wiring harness connector from brake fluid level switch in master cylinder brake (8) Disconnect primary and secondary brake tubes coming from master cylinder at ABS ICU (Fig. 54). (9) Remove two nuts attaching master cylinder to power brake booster (Fig. 49). (10) Slide master cylinder straight out of power brake booster. CAUTION: Seal on rear of master cylinder is used (11) Remove vacuum seal located on mounting flange of master cylinder. Vacuum seal is removed cylinder by inserting a sharp tool between seal and master cylinder casting. (12) Loosen 2 bolts fastening ABS ICU bracket to frame rail (Fig. 55). (13) Lift ICU off frame rail bolts and lower ICU onto top of transaxle. (14) Disconnect vacuum hose from check valve on face of booster. Do not remove check valve from (15) Access and remove knee blocker airbag. (Refer to 8 - ELECTRICAL/RESTRAINTS/KNEE BLOCKER AIRBAG - REMOVAL) (16) Remove booster push rod from pin on brake pedal (Fig. 53). To do so: Fig. 54 Primary and secondary brake tubes at ICU 1 - MASTER CYLINDER Fig. 55 CAB Wiring Connector 1 - ICU MOUNTING BOLTS ON FRAME RAIL CS BRAKES - BASE 5 - 31 POWER BRAKE BOOSTER (Continued) |