|
| |
TM 10-4320-351-14
4.11 FLANGE MOUNTED THREE-INCH UNISEX COUPLING MAINTENANCE.
4.11.1 Replace Flange Mounted Three-Inch Unisex Coupling O-Ring. (Refer to figure 4-7.)
This task consists of:
a. Removal
b. Installation
INITIAL SET-UP:
Tools:
Materials/Parts Required:
Tool Kit, General Mechanics
Washer, Lock (Appendix I, Item 61)
(Appendix B, Section III, Item 1)
Petrolatum (Appendix F, Section II, Item 10)
General Safety Requirements:
Equipment Condition:
Pump assembly shut down (para. 2.6)
WARNING
Fuels are toxic and flammable. Do not get on person
or clothing. Work in well ventilated area. Do not
smoke. Ensure equipment is well grounded.
a.
Removal.
(1)
Connect the module grounding cable to a secure ground.
(2)
Remove the six bolts (1), lock washers (2) and flat washers (3) that secure the coupling assembly (4) to the
fuel transfer pump (5). Discard the lock washers (2).
(3)
Remove O-ring (6) from groove in coupling flange face and dispose of in accordance with SOP.
Figure 4-7. Flange Mounted Unisex Coupling O-Ring Replacement
b.
Installation.
(1)
Wipe clean the O-ring groove.
(2)
Lightly lubricate with petrolatum and install O-ring (6) in groove.
(3)
Position coupling assembly (4) on fuel transfer pump (5) so that valve handle (7) is on top, and install the
six bolts (1), lock washers (2) and flat washers (3) to secure the coupling to the fuel transfer pump. Torque
bolts in a crossing pattern to 80-90 in. lbs. (8.8-9.9 Nm).
4-19
|
