DRAIN BALL VALVE (MODELS BA91-141, BA91-140, PD52983-50, BA91-141A, BA91-140A) SERVICE, REPLACEMENT, REPAIR

TM 10-5430-238-12&P

0024 00

OPERATOR AND UNIT MAINTENANCE MANUAL

(INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)

COLLAPSIBLE FABRIC TANKS, FUEL STORAGE, 3,000,

10,000, 20,000, AND 50,000 GALLON

DRAIN BALL VALVE (MODELS BA91-141, BA91-140,

PD52983-50, BA91-141A, BA91-140A)

SERVICE, REPLACEMENT, REPAIR

INITIAL SETUP

Tools

Equipment Condition

Tool Kit General Mechanics

Fuel tank drained

(Item 1, WP 0033 00)

(WP 0005 00)

Torque Wrench (ft-lb)

(Item 3, WP 0033 00)

Materials/Parts

Mandatory Replacement Parts

Anti-seize Tape

Bonnet gasket

(Item 7, WP 0040 00)

(Item 11, WP 0042 00)

Dry Cleaning Solvent

Stem Seal

(Item 4, WP 0040 00)

(Item 12, WP 0042 00)

Grease

Stem Seal

(Item 5, WP 0040 00)

(Item 13, WP 0042 00)

Rags, Wiping

(Item 6, WP 0040 00)

Thread Sealing Compound

(Item 8, WP 0040 00)

REMOVAL

Remove the drain ball valve from the drain hose assembly.

DISASSEMBLY

1. Remove handle-nut (1) from valve stem (2).

2. Remove handle (3) from valve stem (2).

3. Remove valve stem nut (4) from valve stem (2).

4. Remove travel stop (5), gland ring (6), and valve stem seal (7) from valve stem (2). Discard seal (7).

5. Remove cap screws (8) from bonnet (9). Remove bonnet (9) from valve body (10).

6. Remove valve stem (2), valve stem seal (11), spring (12), bonnet gasket (13), ball (14), and two

ball seats (15) from valve body (10). Discard seal (11) and bonnet gasket (13).

SERVICE

WARNING

Dry cleaning solvent, A-A-59601, used to clean parts, is potentially dangerous

to personnel and property. It produces toxic and flammable fumes. Use only

in well ventilated areas. Avoid repeated and prolonged skin contact. Do not

use solvent near an open flame or near excessive heat. The flash point of the

solvent is 100F to 130F (38 C to 59 C).

1. Clean all parts with dry cleaning solvent and dry thoroughly with rags.

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