TM 10-4610-240-10
TM 08580C-10/1
T.O. 40W4-13-21
2-1. TRAILER CONTROLS AND INDICATORS - continued.
a. Brake System (Army) The service brakes are air actuated and the controls are in part of the towing vehicle.
When the two air hoses from the trailer are connected to the connectors on the towing vehicle, the service brake system
and the brake pedal on the towing vehicle automatically operate the trailer brakes. Disconnecting the air hoses causes
the service brakes to engage automatically, thus serving as parking brakes for the trailer. Should the air supply from
both the towing vehicle and the trailer reservoir be interrupted, a compression spring immediately locks the brakes. See
CAUTION
The leveling jacks must be in the stowed position (horizontal position) when towing or shipping the
ROWPU by truck or rail.
b. Leveling Jacks. (ARMY) The leveling jacks are secured by a swivel assembly to the support bracket located
under the deck of the trailer at each corner. The swivel assembly contains a spring-loaded mounting assembly which can
lock the assembly in either the vertical or horizontal position. In the vertical position, the jacks are used to level the
trailer by raising or lowering the trailer corners as necessary. In the horizontal position the jacks are stowed. The front
jacks, when locked in the vertical position, can also be sued to assist in uncoupling the trailer from the towing vehicle.
Turning the crank counterclockwise raises the jackpad; turning the crank clockwise lowers the jackpad.
c. Spare Wheel and Tire Carrier Assembly. (ARMY) The spare wheel and tire carrier has a manually operated,
cable-driven winch mounted on the frame structure at the rear end and underside of the trailer. The two (2) wheel lug
nuts installed on the carrier are the same as those on the towing vehicle, thereby enabling the use of the vehicle's lug
wrench for removal or replacement of the spare wheel assembly.
2-2. ROWPU CONTROLS AND INDICATORS.
The following paragraphs describe controls and indicators used to operate the ROWPU.
a. Product Water Totalizer. The product water totalizer is located on the floor of the frame directly behind the
booster pump as shown in figure 2-3. This meter is used to indicate the total number of gallons, in tenths of a gallon, of
product water the unit has produced. The number of gallons is read directly from the numerals in the small window and
the tenths of gallons from the position of the needle on the dial face.
(1) One revolution of dial equals 10 gallons of product water produced.
(2) The meter registers as follows:
0
Last digit is
ZERO and is constant
(does not move)
(3) After one revolution, a total of 10 gallons are produced and the meter will register as follows:
1
0
(4) After two revolutions:
2
0
2-2
