CHAPTER 4. ORGANIZATIONAL MAINTENANCE INSTRUCTIONS

CHAPTER 4

ORGANIZATIONAL MAINTENANCE INSTRUCTIONS

Section I. SERVICE UPON RECEIPT OF MATERIEL

4-1. Inspecting and Servicing the Equipment

(2) Fill the fuel tank (fig. 1-1) with gasoline.

Fuel tank capacity is 22.8 gallons.

(3) Check the engine coolant. Make sure the

a. Inspect the unpacked pump assembly as follows:

radiator is filled to the required level and that there is

(1) Inspect for cracks, dents, and other damage

sufficient antifreeze for the required operating

that may have occurred during shipment.

conditions. Normally, water that is suitable for drinking

(2) Inspect for loose or missing hardware.

is suitable for use in the radiator.

(3) Check the engine for leaking.

(4) Check the oil level in the engine crank- case,

(4) Inspect the suction and discharge ports for

using the dipstick (8, fig. 3-3). Add oil if the level is

damaged ends and butted threads.

near the low mark on the dipstick.

(5) Using the crank, turn over the engine with

the battery disconnect switch and ignition switch in the

4-2. Installation

OFF positions. The engine and pump must turn freely

without binding or scraping or other signs of faulty

a. Locate the pump assembly on a solid, flat

operation.

surface as close as possible to the source of supply.

(6) Inspect the control panel (fig. 1-1) for

Allow ample room around the pump to support the

damaged controls and instruments.

suction and discharge lines and to enable you to service

(7) Remove the engine side panels (fig. 1-2).

the pump as required.

Inspect all hoses for abrasions, cracks, fraying, and

other damage. Check tubing for kinks, flatted areas or

CAUTION

other damage.

The tilt of the pump when spotted for

(8) Tighten all loose hardware. Report any other

operation shall not exceed 15

damage to the required authority.

degrees from horizontal. An angle of

b. Service the pump assembly as follows:

more than 15 degrees will result in

WARNING

inefficient operation of the engine

lubrication system and may cause

Do not smoke or use an open flame

severe damage to the engine or

in the vicinity when servicing the

automatic shutoff due to low oil

battery. Batteries generate hydrogen

pressure.

gas, which is highly explosive.

b. Before the pump is disengaged from the towing

NOTE

vehicle, remove the lock pin (3, fig. 4-1) that holds the

Use electrolyte with a specific gravity

front leg assembly (4) in the raised position and lower

of 1.280. Do not use tropical

the leg. Reinsert the pin to lock the leg. Install the

electrolyte, which will reduce battery

chock blocks under the wheels to prevent the unit from

reserve capacity.

rolling. Disconnect the electrical plug and the safety

chains (2), then disengage the tow bar (1) from the

towing vehicle. Pull out the pin (1, fig. 4-2) that holds

(1) If you are preparing the pump assembly for initial

the leg (2) of each rear stand and pull down the leg so

use, open the container of electrolyte and fill the dry

that it is in firm engagement with the ground. Reinsert

charge battery in the battery box (fig. 1-1) so that the

the pin to lock the position of the leg. The pump should

electrolyte is up to the required level. If possible,

now be firmly positioned so that it will not rock or

charge the battery for 10 or 15 minutes before

wobble.

connecting and applying the starting load. Refer to

paragraph 4-37 for battery charging instructions. Make

sure you have securely connected the battery. Note that

the electrical system has a negative ground.

Change 1 4-1