Hydraulic System
109
Main Valve
Pressurized oil is directed from the hydraulic pump to a bank of stack-type directional control valves
mounted either on the front header of the W
ITTKE
™ body (see Figure 7
27) or on the left-hand side,
mid-section body wall (see Figure 7
28). Rubber gaskets seal each valve section.
N
OTE
:
The left-side mounted main valve is protected by a protective cover.
Figure 7
-
27 Main valve (front mounted)
Figure 7
-
28 Main valve (left-side mounted)
The main valve powers all body functions (tailgate, arms, packer, etc.).
The valve bank on a commercial unit is comprised of the following:
The Inlet Section:
The oil enters the valve bank through the top of the inlet section where it is
then directed to the work sections below. The pressure test port is located at the front of the inlet
section. Remove the cap on the quick coupler (see Figure 7
29) and install a pressure gauge to
read the system operating pressure.
Air control box
Protective cover
Main valve
Summary of Contents for FEATHERWEIGHT
Page 1: ...STARLIGHT SUPERDUTY MAINTENANCE MANUAL FEATHERWEIGHT ...
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Page 3: ...STARLIGHT SUPERDUTY FEATHERWEIGHT MAINTENANCE MANUAL ...
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Page 10: ...viii Table of Contents ...
Page 18: ...8 Introduction ...
Page 40: ...30 Safety ...
Page 46: ...36 Lubrication ...
Page 74: ...64 Electrical System ...
Page 90: ...80 Pneumatic System ...
Page 170: ...160 Multiplexing ...