Specifications

TM9-2330-384-14&P

5-8.

VAPOR INTEGRITY TEST (Con't).

(24)

Repair tank barrel leaks, and verify repair by testing per step 18.

(25)

Close emergency valve (29) using top lever in roadside cabinet.

(26)

Return discharge piping to atmospheric pressure by opening butterfly valve (1).

(27)

If vacuum does not drop, emergency valve is maintaining a differential pressure without leaking; go to step

31. If vacuum drops, an emergency valve leak is the cause; go to step 28.

(28)

Return tank and piping to atmospheric pressure by opening rear sump drain (2) and butterfly valve (1).

NOTE

Although an emergency valve leak does not constitute a "K" stamp failure if the leak

is internal, proper emergency valve function is still required for safe operation.

(29)

Repair emergency valve leak (para 4-74), and verify repair by testing per step 18.

(30)

Return tank and discharge piping system to atmospheric pressure by opening draincock (20), butterfly valve

(1), and sump drain (2) located at rear of vehicle.

(31)

Return tanker to service by closing all valves and removing all test hardware from tanker.

NOTE

Refer to DOT 49CFR, paragraph 180.415, in regard to inspection markings

required for this test; markings will include test date (month and year), followed by

the letter "K."

Change1

5-41/(5-42 blank)