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
2. Remove the pump and adapter from the engine as follows (see Figure 5):
a. Remove the six nuts that attach the pump housing to the adapter.
b. Loosen and remove the pump housing and gasket. Discard the gasket.
c. Remove the coupling clamp assembly.
d. Carefully pry the drive sleeve/impeller assembly off the engine drive shaft.
e. Remove the retaining nut that attaches the drive sleeve to the pump impeller. Remove
and discard the drive sleeve and the seal assembly.
f. Remove the four bolts, four lock washers, and four flat washers that attach the adapter to
the engine.
g. Push the seal seat out of the adapter and discard it.
COUPLING CLAMP ASSEMBLY
SET SCREW
IMPELLER
ADAPTER
DRIVE
SLEEVE
SEAL
SEAT
PUMP HOUSING
SEAL ASSEMBLY
RETAINING NUT
FLAT WASHER (4), LOCK WASHER (4), AND BOLT (4)
DRIVE SHAFT
NUT (6)
Figure 5. Pump Removal.
3. Prepare the new engine for installation as follows:
a. Remove the oil drain plug from the new engine. Install the oil drain extension and
washers that were removed from the old engine. Install the drain plug on the extension
(see Figure 3).
b. Install the power connector assembly onto the side of the engine using the two bolts, two
flat washers, and two lock washers (see Figure 4).
c. Install the fuel supply and return lines (see Figure 4).
NOTE
The fuel lines are color coded and are not interchangeable. Install the red-coded
(supply) line on the fuel injection pump and the yellow-coded (return) line on the
fuel injection valve.
4. Install the adapter and pump onto the new engine as follows (see Figure 5):
a. Polish the engine drive shaft with fine abrasive cloth to remove any rust or corrosion.
0050 00-5
