TM-5-3805-254-14-P-2

TRUCK, DUMP, 20 TON, 6X4, ON-OFF HIGHWAY 71,000 GVW, IHC MODEL F-5070 (CCE)

TECHNICAL MANUAL; OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT, GENERAL SUPPORT AND DEPT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS INFORMATION AND SUPPLEMENTAL MAINTENANCE INSTRUCTIONS)

JUNE 1980

TM-5-3805-254-14-P-2 - Page 558 of 894

TRUCK SERVICE MANUAL

FUEL SYSTEM

Intake Air System Group

A turbocharger is a mechanical unit, driven by exhaust gas,

used

to force more air into an engine cylinder than the engine

would

receive

operating

naturally aspirated.

The additional

air and an increased fuel charge enables the engine to

develop more horsepower and/or operate more efficiently.

VT-50 Turbochargers

Description

Cummins

VT-50 Turbochargers,

Fig.

102, are designed so weight and size are held to a

minimum, therefore, the turbocharger adds a very small

percentage to the overall weight of the engine, which results in

a higher horse power to weight ratio.

The turbocharger consists of turbine wheel and a compressor

wheel separately encased, but mounted on, and rotating with,

a common shaft.

The turbine side of the turbocharger mounts

to the exhaust manifold outlet flange and the compressor

wheel side connects with the air intake manifold.

Lubrication

and cooling is obtained from filtered engine oil through flexible

lines or tubing.