LEFT DISCHARGE VALVE, TUBES, AND RELATED PARTS REPLACEMENT (FIXED FIRE EXTINGUISHER)

TM 5-5420-202-20-4

LEFT DISCHARGE VALVE, TUBES. AND RELATED PARTS REPLACEMENT

(FIXED FIRE EXTINGUISHER) (Sheet 3 of 5)

INSPECTION:

Make sure all connections and seating surfaces are free of nicks, burrs, or other defects

that could cause leakage. Replace any damaged part.

NOTE

Apply zinc chromate primer to all threads prior to installa-

tion of threaded tube/hose connectors:

ASSEMBLY:

Secure check valve (A) in vise.

Using 15/16 inch wrench, install bushing (B) into free flow end of check valve (A). Using

15/16 inch socket, ratchet, and torque wrench, tighten bushing (B) to 40-50 lb-ft (54-

75 Nm).

Using 3/4 inch wrench, install adapter (C) into bushing (B). Using 3/4 inch socket, ratchet,

and torque wrench, tighten adapter (C) to 40-50 lb-ft (54-75 Nm).

Using 7/8 inch wrench, install tube (D) loosely onto adapter (C). Tube (D) must remain

loose for positioning during installation.

TA248736

Go on to Sheet 4