Section III. PRINCIPLES OF OPERATION - TM-10-3930-638-24-P0029

TM 10-3930-638-24&P

Section III. PRINCIPLES OF OPERATION

Para

Forklift Truck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

Transmission and Drive Shafts . . . . . . . . . . . . . . . . . 1-20

Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15

Axles and Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22

Fuel System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16

Steering System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

Exhaust System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17

Body and Towing Attachments . . . . . . . . . . . . . . . . 1-24

Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19

Hydraulic Lift System . . . . . . . . . . . . . . . . . . . . . . . . 1-25

g. Axles and Wheels. Single reduction type axles;

1-14. FORKLIFT TRUCK

pneumatic tires. Front axle is rigidly mounted; rear

axle is trunnion mounted.

a. Engine. The diesel engine is an internal combustion

power unit in which the heat of diesel fuel is converted

h. Brakes. Service brakes consist of drum and shoe

into work in the engine cylinders. The engine relies on

hydraulic wheel brakes on front and rear wheels for

the heat of compressed air to ignite the fuel. Fuel flow and

stopping the truck. A hydraulic brake valve is mounted

engine speed are controlled by the fuel injection pump

under the front chassis and provides power assist for

governor and fuel injectors.

service brakes. Parking brake is mounted on output shaft

of transmission.

b. Fuel System. Fuel is drawn from fuel tank by electric

i. Steering System. Consists of hydraulic steering gear,

fuel pump through an in-line fuel falter, filtered by primary

steering wheel, and two steering cylinders one mounted

and final fuel filters, routed to fuel injection pump and

on each side of truck. Power assist provided by hydraulic

then applied to fuel injectors where the fuel is injected

pump mounted on, and driven by, transmission.

into the engine cylinders.

j. Body and Towing Attachments. Chassis is comprised

of front chassis and rear chassis connected together by

c. Exhaust System. Engine combustion by-products are

pivot pins. This enables steering to be accomplished by

channeled through the exhaust manifold, muffler and

pivoting of front and rear chassis on pins by means of a

exhaust pipe. The muffler aids in quieting engine noise.

steering cylinder mounted on each side of chassis to front

and rear chassis. Pintle hook, and tow bar and chains,

all located at rear enable towing to be accomplished.

d. Cooling System. Provides cooling water to engine.

Water is circulated through engine by water pump which is

belt driven by crankshaft pulley. Transmission oil cooler

k. Hydraulic Lift System. Hydraulic power supplied by

is located in front of radiator. Radiator is equipped with

hydraulic pump mounted on, and driven by, transmission.

coolant recovery system.

Hydraulic oil routed through hoses to control valve which

controls flow of oil to lift cylinder, and to and from tilt

cylinders. side shift cylinder, and rotation cylinder.

e. Electrical System. 24 Volt system with negative

ground. Power provided by two batteries. Alternators

mounted on. and driven by engine. Ignition switch controls

application of power to main light switch and starter motor.

1-15.

ENGINE

The engine is a four cylinder, in-line, four-stroke-cycle,

f. Transmission and Drive Shafts. Three speeds in both

forward and reverse, has declutch feature which permits

valve-in-head diesel engine. Air enters the intake manifold

through a dry-type air cleaner. An ether injection arrange-

neutralizing transmission. equipped with axle disconnect.

ment is connected to the intake manifold for quick starting

Three drive shafts used to transmit power to front and rear

of the engine during cold weather.

axles.

1-7