Chevrolet 70 1969 Series, Shop Manual

Page: 362 / 913

AIR COMPRESSORS AND GOVERNORS 6T-J
SECTION 6T
AIR COMPRESSORS AND GOVERNORS
GEAR
D R iV ^ j : =YPICf\L ALL CABS)
1 Water Outlet
2 Water Inlet
3 Air Intake
4 Adjusting Arm
5 Engine Air Intake Tube
6 Governor
7 Governor to Air Tank Line
8 Lubricating Oil Inlet
9 Air Line to Tank
10 Compressor Support Bracket
11 Compressor to Base Bolt
12 Bracket to Base Swivel Bolt
13 Power Steering Pump Bracket
(Opt.)
14 Compressor Support Bracket
Bolts
15 Drive Belt
16 Drive Pulley
17 Governor Tube
Figure 1 — Air Compressors Installed
GENERAL INFORMATION
Midland-Ross and Bendix Westinghouse air
compressors are interchangeable as complete
assemblies on many models covered by this
manual (see “ Air Compressor Model Application
Chart” )- On such models, the mechanic must
determine which of the two makes is used on a
specific vehicle before proceeding with adjustment
or repair of any compressor. All other models
come equipped with either a Bendix-Westinghouse
compressor or a Midland-Ross compressor as
specified in the "A ir Compressor Model Appli­
cation Chart” .
Offered as optional equipment on 70 and 80
series vehicles are compressors of greater
capacity than those used as standard in regular
production. All procedures in this section apply
to optional as well as the standard equipment
compressors.
Refer to the ‘Air Compressor Model Appli­
cation Chart” to determine which compressor is
used on any specific truck.
DESCRIPTION
The air compressors covered in this Manual
are two-cylinder, piston type compressors. The
rated capacity of an air compressor is its piston
displacement in cubic feet per minute when oper­
ating at 1250 rpm. Standard air compressors are
rated at 7-1/4 or 12 cubic feet per minute and
optional compressors are rated at 12 cubic feet
per minute. The compressor Model Number is
shown on a name plate which is attached to the
cylinder block.
The Bendix-Westinghouse compressor used
on some models is flange mounted at rear of en-
CHEVROLET SERIES 70-80 HEAVY DUTY TRUCK SH O P M A N U A L