TM 9-2320-361-20 8-30. QUICK-DISCONNECT COUPLING HALF MAINTENANCE This task covers: a. Leak Test c. Installation b. Removal INITIAL SETUP: APPLICABLE MODELS EQUIPMENT CONDITION All Parking brake set (TM 9-2320-361-10). MATERIALS/PARTS Air reservoirs drained (TM 9-2320-361-10). Seal GENERAL SAFETY INSTRUCTIONS Detergent (Appendix C, Item 12) Do not disconnect air couplings before draining air Antiseize tape (Appendix C, Item 27) reservoirs. REFERENCES (TM] TM 9-2320-361-10 TM 9-2320-361-20P a. Leak Test 1. Start engine (TM 9-2320-361-10) and buildup air pressure. 2. With dummy coupling (4) locked to coupling half (5), turn valve handle (1) to open position. 3. Test dummy coupling (4) and coupling seal (3) for leaks by coating with soapy water. Check if coupling seal (3) is leaking by watching for air bubbles. If leaking or damaged, replace. 4. Turn valve handle (1) to aline with coupling half (5). 5. Stop engine (TM 9-2320-361-10). Do not disconnect air couplings before draining air reservoirs. Small parts under pressure may shoot out with high velocity, causing injury to personnel. 1. Remove dummy coupling (4) from coupling half (5). 2. Remove coupling half (5) from nipple (2). NOTE Perform step 3 only if coupling seal is damaged or leaking. 3. Remove coupling seal (3) from coupling half (5). Clean all coupling seal (3) remains from coupling half (5). c. Installation ● ● NOTE Perform step 1 if coupling was removed. Wrap male pipe threads with antiseize tape before installation. 1. Install new coupling seal (3) in coupling half (5). 2. Install coupling half (5) on nipple (2). 3. Install dummy coupling (4) on coupling half (5). 8-74