TM 9-2320-364-20-4 12-172 12-36.  AIR LINE REPLACEMENT (CONT). Table 12-4.  Chassis Air Lines Replacement - CONT. Hose No. From To 2612   Spring Brake Valve - Left Center (14)   Cab Air Manifold - Top 2nd From Front (26) 2622   Spring Brake Valve - Left Rear (14)   Spring Relay Valve No. 1 - Top Front (27) 2623   Spring Brake Valve Tee - Upper     Bottom Right (14)   Cab Air Manifold - 2nd From Front,     Middle (26) 2664   Spring Brake Valve Tee - Lower     Bottom Right (14)   Double Check Valve - Right Front (28) 2663   Bottom Front Double Check Valve - Left (28)   Cab Air Manifold - Back Center (26) 2686   Top Front Double Check Valve - Left Top (28)   Front Quick Release Valve - Front (29) 2684   Top Front Double Check Valve - Top (28)   Rear Quick Release Valve - Top (30) 2489   Top Front Double Check Valve - Right (28)   Cab Air Manifold - 4th From Front,     Center (26) 2665   Middle Front Double Check Valve - Top (28)   Cab Air Manifold - Middle of Center (26) 2661   Middle Front Double Check Valve (28)   Tractor Protection Valve - Left Front (31) 2894   Front Quick Release Valve - Top (29)   Service Gladhand - Rear (32) 2369   Relay Spring Valve No. 2 - Bottom Left (33)   Axle No. 5 Manifold - Front 2nd Down (34) 2368   Relay Spring Valve No. 2 - Bottom Right (33)   Axle No. 4 Manifold - 2nd From Top (35) 2638   Relay Spring Valve No. 2 - Top (33)   Spring Relay Valve No. 1 Tee - Top Rear (27) 2614   Relay Spring Valve No. 2 - Left Bottom (33)   Chassis Air Manifold - Top Front (6) 2660   Relay Spring Valve No. 2 - Left Top (33)   Service Relay Valve No. 3 - Top Rear (36) 2669   Relay Service Valve No. 3 Tee - Top Front (36)   Quick Release Valve - Rear (30) 2143   Relay Service Valve No. 3 - Bottom Right (36)   Axle No. 4 Manifold - 3rd Down, Rear (35) 2653   Tractor Protection Valve - Rear Left (31)   Rear Service Gladhand (37)