Section 5. PREVENTIVE MAINTENANCE

SECTION 5

PREVENTIVE MAINTENANCE

5-1.

GENERAL.

Any or all checks pertinent to any item (including

supporting, attaching or connecting members) are

performed automatically as general procedures, in

5-2.

The fork lift truck must be inspected

addition to any specific procedures given. General

periodically and systematically to insure that it is ready

inspection instructions are as follows:

for operation at all times. Correct all defects discovered

before they result in serious damage or failure. The

Visually inspect unit

for

safety

necessary preventive maintenance checks and services

serviceability. Good condition is explained further as

are listed and described below. The item numbers

meaning: not bent or twisted, not chafed or burned, not

indicate the sequence of minimum inspection

broken or cracked, not bare or frayed, not dented or

requirements.

Note all defects discovered during

collapsed, not torn or cut, not deteriorated.

operation of the unit for future correction, and make

these corrections as soon as operation has ceased.

Inspect for correct assembly. Observe unit for

Stop operation immediately if deficiency noted during

normal position in the truck and that all parts are present

operation would damage the equipment if operation

and in their correct relative positions.

were continued.

5-3.

CHECKS AND SERVICES.

Inspect for security. Perform visual, hand-

feel, pry-bar, wrench, or screwdriver inspection for

looseness in the unit.

Include any brackets,

5-4.

SCOPE. This paragraph contains tabulated

lockwashers, locknuts, locking wires, and cotter pins as

listing of preventive maintenance checks and services.

well as any connecting tubes, hoses, or -wires.

Refer to Table 5-1 for the preventive maintenance

checks and services. The items are listed consecutively

Inspect for wear. Note items worn beyond

and indicate the sequence of minimum preventive

serviceable limits, or likely to fail if not replaced before

maintenance requirements on the truck.

the next scheduled inspection. Excessive wear of

mating parts or linkage connections is usually evidenced

5-5.

INTERVALS. Inspect truck each time it is

by too much play (lash or lost motion). It includes

operated. This service is divided into three parts:

illegibility as applied to markings and data plates, and

printed matter.

Before-Operation Service. This is a brief

service to ascertain that the truck is ready for operation;

5-8.

GENERAL CLEANING. Any special cleaning

it is mainly a check for conditions affecting truck

instructions required for specific mechanism or parts are

readiness since the last after-operation service.

contained in the pertinent section. General cleaning

instructions are as follows:

During-Operation Service.

This service

consists of detecting unsatisfactory performances.

Use dry-cleaning solvent (SD) or volatile

While driving or operating the truck, be alert for any

mineral spirits to clean or wash grease or oil from all

unusual noises or odors, steering irregularities, or any

parts of the truck.

other indication of malfunction of any part of the truck.

A solution of one part grease-cleaning

Every time a load is picked up or deposited, the brakes

compound to four parts of dry-cleaning solvent or

applied, the truck accelerated or turned, consider it a

volatile mineral spirits may be used for dissolving

test and note any unusual or unsatisfactory

grease and oil from chassis, mast and other parts. Use

performance.

cold water to rinse off any solution which remains after

cleaning.

After-Operation Service. This is the basic

After parts are cleaned, rinse and dry

daily service for all trucks. It consists of correcting, so

thoroughly. Apply a light grade of oil to all polished

far as possible, any operating deficiencies noted to

metal surfaces to

prepare the truck for immediate use.

prevent rusting.

5-6.

GENERAL PROCEDURES FOR SERVICES

Before installing new parts, remove any

AND INSPECTIONS.

preservative materials, such as rust-preventive

compound, protective grease, etc. Prepare parts as

required (oil seals, etc.). For parts requiring lubrication,

5-7.

GENERAL

INSPECTIONS.

General

apply the lubricant prescribed.

inspections are performed to check that items are in

good condition, correctly assembled, secure, not

5-9.

PRECAUTIONS IN CLEANING. The general

excessively worn, not leaking, and adequately

precautions used in cleaning are as follows:

lubricated. These inspections apply to most items in the

preventive-maintenance and inspection procedures.

5-1