PRE-SHOP INSPECTION (CONT)

TB 9-289

NOTE

If upper/lower section (weldment) of a container is not repairable retain the

repairable section (weldment) for use with another lower/upper section.

(10) As an option to 100% disposal of valves, individual repair facilities may justify pressure testing of valves by

presenting evidence of cost benefits. Justification must include all costs associated with both 100% disposal and 100%

testing. This data should include the percentages of pass/fail the facility has experienced in previous testing, if that data is

available. Authorization for testing may be obtained by sending cost data to:

Commander

U.S. Army-Tank-automotive & Armament Command

ATTN: AMSTA-IM-A

Warren, MI 48397-5000

WARNING

Do not allow air pressure inside test drum to exceed 10 psi during test. Pressure

in excess of 10 psi is not necessary to test pressure and will create a hazard to

personnel.

(11) Test pressure relief valve, reusable metal container. Type I only. (Fig. 5)

(a) Install pressure relief valve to air pressure source. Attach test gauge to pressure relief valve.

(b) Open source of air pressure.

(d) Observe that pressure relief valve opens between 7 and 10 psi as indicated by test gauge.

(e) Clean and set aside serviceable pressure relief valve. Discard pressure relief valve if defective.

(12) Test pressure control breather valve, reusable metal container. Type II only. (Fig. 6).