TM   10-3930-638-24&P 2-43. SERVICE BRAKE MAINTENANCE (cont) c. Hydraulic Brake Valve (cont). (1) Brake Mastor Cylinder (cont). STEP LOCATION ITEM ACTION REMARKS INSTALLATION/REPLACEMENT 5 Front chassis, a. Mating surface on Lubricate Lightly coat exterior area shown with bottom left side body (3) grease b.  Brake  master Position Against power assist unit, with fill plug cylinder  (3) opening  facing  upward C. Lock washers (2) Install  and Until brake master cylinder is securely and cap screws (1) tighten mounted d. Brake hoses, lines Connect to hydrau- Para 2-43b and fittings lic brake valve and tighten e. Stop light switch Install on hydrau- Para 2-31e(2) lic brake valve f. Brake master cyl- Fill Add clean brake fluid to within 1/2 inch inder (3) of fill opening g. Brake lines Bleed Para 2-43a h. Brake pedal Depress With engine running. Check for proper brake operation 2-300   Change 2