Step 5. When the pump is entirely drained, close the pump drain valve. Install the caps on the two
discharge connectors and the suction connector.
Step 6. Reel the discharge hoses neatly on the hose reels by using the crank handle found in the toolbox.
Close the gun assembly valves. Rotate the orifice-and-deflector assembly closed to prevent damage to
the headless straight pin. Then stow the gun assemblies on their brackets. Close valves 1, 2, 3, and 4.
Return the crank handle to the toolbox.
Step 7. Use a clean, dry cloth and wipe the interior of the pump unit assembly; wipe the
generator/alternator exterior of the pump, piping, fuel tank, battery, engine, and prime-detergent tank.
Coat the battery terminals with automotive or artillery grease. Inspect the battery to see that the water
level in the cells is at the required level. Remove the front, end, and side panels of the M2 water heater.
Clean all mud, dirt, and other foreign matter from all parts and wipe dry. Stow hoses in the storage
Step 8. Install the cover panels and wipe off any dirt. Wipe any dirt from the control panel. See that the
required publications are stowed in the canvas tool carrier and the OEM is stowed in the toolbox. As
necessary, retouch panels with paint to prevent rust or corrosion.
Step 9. Install the canvas cover assembly over the pump unit. Fasten the canvas cover assembly in
place with the four spring-action buckles.
PROCEDURES FOR IDLE TIME
When the M12A1 PDDA is to be idled, certain procedures are required. The required procedures vary
depending on the expected idle time. Figure 24 specifies the procedures to be followed for less than 24
hours, 24 to 48 hours, and over 48 hours expected idle time. Figure 24 restates much of the material of
the preceding paragraphs, but in condensed form.