. MAINTENANCE SERVICE PROCEDURE CLEAN AXLE CASE BREATHER WARNING 4 - 26 When cleani ng th e axle breather, apply the parking brake and secure the front and rear frames with A: Front B: Rear Remove all mud and dirt from around the breather with a brush. After removing the mud or dir t from ar ound t he breather, remove the b reathe r, immerse it in cleaning flu id and clean it. Whe n cleaning the (fron t and r ear). After removing t he breather , take steps to prevent d irt or dust from entering th e mount