TM-9-2320-273-34

TRUCK TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE

DECEMBER 1980

TM-9-2320-273-34 - Page 547 of 801

TM 9-2320-273-34

CHAPTER 14

REPAIR OF AIR COMPRESSOR AND BRAKES

Section 1. AlR COMPRESSOR

14-1. Description.

The air compressor (fig. 14-1) is a continuously operating, single-cylinder, 13.2 cu ft

per minute (CFM) unit. Compression is controlled by an external air governor which acts on an unloader

valve in the compressor cylinder head to start or stop the compression of air. The unit is lubricated by

engine oil and cooled by engine coolant.

Figure 14-1. Air Compressor.

14-2. On-Engine Testing.

a. Leakage Check.

(1)

Check for water leakage at cylinder head, cylinder head gasket and bolts, water connections,

and pipe plugs.

(2)

Check for oil leakage at the mounting flanges.

14-1