VENT FITTING ASSEMBLY MAINTENANCE (BELL-AVON MODEL ETQ).

TM 5-5430-226-12

4-14. VENT FITTING ASSEMBLY MAINTENANCE (BELL-AVON MODEL ETQ).

NOTE

These instructions apply only to vent fitting assemblies with a cam-lock coupling near the base.

For vent fittings with the vent pipe welded to the base, refer to paragraph 4-14.1 for maintenance

instructions.

This task covers:

a. Removal

d. Inspection

g. Installation

b. Disassembly

e. Repair

c. Cleaning

f. Assembly

INITIAL SET-UP:

Tools required:

Tool Kit, General Mechanics, Automotive (Appendix B, Sec. In, item 1)

Torque Wrench (0-50 Inch-Pounds) (Appendix B, Sec. III, item 2)

Pipe Wrench, 12 inch (Appendix B, Sec. III, item 2)

Materials/Parts required:

Detergent, General Purpose (Item 1, Appendix D)

Rag, Wiping (Item 2, Appendix D)

Tape, Anti-seize (Item 3, Appendix D)

Coupling Gasket (2) - MS27030-6

Gasket - EX1333B-2

O-ring - MS29513-250

Equipment Condition:

Water tank empty.

a. Removal.

(1) Open lock arms (3) on coupling (2).

(2) Disconnect vent assembly (1) from flanged coupling (4).

b. Disassembly.

(1)

Remove coupling gasket (15) from coupling (2).

(2)

Unscrew coupling (2) from vent pipe (8) using pipe wrench.

(3)

Unscrew vent cap (6) and remove gasket (7).

(4)

Remove eight bolts (14), eight washers (13), and dust cap (10) from flanged coupling (4).

(5)

Separate flanged coupling (4) and o-ring (12) from water tank (5).

(6)

Remove gasket (11) from dust cap (10).

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