ARMY TM 10-4610-309-14
MARINE CORPS TM 10802A-14/1
0050 00
TACTICAL WATER PURIFICATION SYSTEM (TWPS)
UNIT MAINTENANCE PROCEDURES
DIESEL ENGINE AND FUEL TANK ASSEMBLY
Clean or replace the fuel filters as follows (see Figure 15):
1. Remove the fuel tank assembly from the pump skid. Refer to REPLACE and Diesel Engine.
2. Remove the drain plug and washer and drain the tank's contents into a container. Reinstall the
plug and washer when the tank is empty.
3. Remove the filler cap and lift out the screen filter. Clean or replace it as necessary. Reinstall the
screen filter and filler cap.
4. Remove the three screws, flat washers, and lock washers that attach the fuel cock assembly to
the tank. Lift the assembly straight out until the fuel filter is clear of the tank. Remove and
discard the mounting plate O-ring.
5. To replace the filter, remove the two nuts that attach it to the fuel cock. Remove and discard the
filter. Attach a new filter to the fuel cock using the two nuts. Be sure that the small O-ring on the
fuel cock is in place.
6. If the filter is not being replaced, clean it with clean diesel fuel.
7. Reinstall the fuel cock assembly on the tank using a new mounting plate O-ring and three screws,
flat washers, and lock washers.
Fuel Cock Replacement:
Parts (TM 10-4610-309-24P):
Fuel Cock
O-ring
Materials:
Container for collecting drainage from the fuel tank
Clean rags (WP 0079, Table 1, item 23)
Replace the fuel cock as follows (see Figure 15):
1. Remove the fuel tank from the pump skid and drain. Refer to REPLACE and Diesel Engine.
2. Remove the fuel supply line and clamp from the fuel cock.
3. Remove the three screws, three lock washers, and three flat washers that attach the fuel cock
assembly to the tank. Lift the assembly straight out until the fuel filter is clear of the tank.
Remove and discard the mounting plate O-ring.
4. Remove the two nuts that attach the fuel cock to the fuel filter. Discard the fuel cock.
5. Attach the new fuel cock to the fuel filter using two nuts. Be sure the small O-ring on the fuel
cock is in place.
6. Install the fuel cock assembly on the tank using a new mounting plate O-ring and three screws,
three lock washers, and three flat washers.
7. Attach the fuel supply line assembly to the fuel cock using the clamp.
0050 00-19
