TM 9-2320-361-20 6-4. FRONT-WHEEL DRIVE LOCK-IN SWITCH MAINTENANCE This task covers: a. Air Valve and Bracket Removal d. Repair b. Line Removal e. Line Installation c. Cleaning and Inspection f. Air Valve and Bracket Installation INITIAL SETUP: APPLICABLE MODELS All MATERIALS/PARTS Six locknuts Four sleeves Antiseize tape (Appendix C, Item 27) REFERENCES (TM) TM 9-2320-361-10 TM 9-2320-361-20P TM 9-243 EQUIPMENT CONDITION Parking brake set (TM 9-2320-361-10). Air reservoirs drained (TM 9-2320-361-10). Battery ground cable disconnected (para. 4-48). Front-wheel drive lock-in indicator and air pressure switch removed (para. 4-36). GENERAL SAFETY INSTRUCTIONS Do not disconnect air lines before draining air reservoirs. a. Air Valve and Bracket Removal WARNING Do not disconnect air lines before draining air reservoirs. Small parts under pressure may shoot out with high velocity, causing injury to personnel. NOTE Tag all lines for installation. 1. Remove two screws (10), decal plate (9), and air valve (12) from bracket (8). 2. Remove line (4) and sleeve (5) from elbow (7). Discard sleeve (5). 3. Remove hose (1) from adapter (13) and pipe tee (3). 4. Remove elbow (7) and adapter (13) from air valve (12). 5. Remove two screws (11), locknuts (6), and bracket (8) from dash panel (2). Discard locknuts (6). 6-12