Section V. PREVENTIVE MAINTENANCE CHECKS AND SERVICES (MONTHLY AND QUARTERLY)

Section IV. LUBRICATION INSTRUCTIONS

4-8. General

provide you with additional lubrication information.

4-9. Chassis Lubrication

This section contains supplemental information and

lubrication instructions that must be followed for the

Lubrication at organizational maintenance consists

pump assembly at the organizational maintenance level.

primarily of annual lubrication of wheel bearings. Refer

Refer to LO 5-4320-234-12 (fig. 3-1) for lubrication

to paragraph 4-52 for wheel bearing maintenance and

points, intervals, and detailed instructions. Also,

lubrication instructions.

reference to paragraphs 3-2 thru 3-4 of this manual will

Section V. PREVENTIVE MAINTENANCE CHECKS AND SERVICES

(MONTHLY AND QUARTERLY)

4-10. General

4-11. Preventive Maintenance Checks and Services

This section lists the preventive maintenance checks

Refer to table 4-1 for a listing of the preventive

and services which shall be performed on a monthly or

maintenance checks and services which are allocated to

quarterly basis by organizational maintenance

organizational maintenance.

personnel. It includes and expands upon the preventive

maintenance services performed by operator/crew

maintenance and includes additional services which are

allocated to organizational maintenance.

Table 4-1. Organizational Preventive Maintenance Checks and Services

M--Monthly

Q--Quarterly

Interval and

ITEM TO BE INSPECTED

Sequence No.

PROCEDURE

ENGINE OIL

Check that engine oil has been changed at the required intervals and that the oil filter element has been

replaced as scheduled. Check crankcase oil level and, if necessary, add oil to bring the level to the

specified mark.

AIR CLEANER

Check restriction indicator mounted next to the control panel. If it indicates that the air cleaner must be

serviced, proceed as described in paragraph 3-10. Remove the precleaner and clean out any

accumulated dirt or debris.

FUEL LEVEL

WARNING

Do not fill the fuel tank while the engine is running. Flammable vapors are released

while the tank is being filled, and a park from the engine could ignite them.

Check fuel level on gage mounted on fuel tank. Check that the fuel in the tank is free of moisture and

contamination.

BATTERY

Check battery condition with a hydrometer. A fully charged battery has a temperature correct specific

gravity reading of 1.275 at 750F. Charge the battery if the specific gravity is 1.250 or less. See

paragraph 4-37 for procedures.

EXHAUST SYSTEM

Check muffler, pipes and manifold for damage and leaks. Check weather cap for proper operation.

Repair as necessary.

GENERAL

Walk around the pump unit and visually inspect for loose or missing bolts, screws, hoses, fittings or

other parts. Tighten or repair as necessary. Check tires for 40-psi inflation and fill them if necessary.

SUCTION AND DISCHARGE LINES

Check that all line connections are tight and that lines are free from severe abrasions, cracks, flatted

areas, and obstructions.

FUEL STRAINER

Check for dirt or water in the fuel bowl. Service if necessary (para 3-11). If moisture or dirt in the fuel

bowl is evident, check fuel supply for contamination.

4-4