Section II. DESCRIPTION AND DATA
1-17. Moldboard
1-15.
Description
The moldboard is the earth-moving portion d the
bulldozer. The unit is supported by a linkage consisting
1-16.
General
of two push beams and four tilt arms.
The Tank-Mounting, Earth Moving Bulldozer
M8A3 is a hydraulically operated unit for mounting on
1-18.
Electromagnetic Clutch and Control
the M48A3 Tank. (figure 1-1). The bulldozer consists of
The electromagnetic clutch is controlled by
the following:
actuating a switch mounted on the driver's instrument
(a) A moldboard, with push beams and tilt
panel. The switch is turned "on" to engage the clutch
arms.
and turned "off" to disengage the clutch.
(b) Electromagnetic clutch and controls.
(c) Moldboard control handle and linkage.
1-19. Moldboard Control Linkage
(d) Carrying hooks and handle.
A control handle in the driver's compartment, and a
(e) Hydraulic control system consisting of a
linkage connected to the control valve manifold, controls
mount assembly, an oil reservoir, a control
the operation of the moldboard.
valve manifold, and hydraulic cylinders,
tubing and hoses.
(f) Armor guards.
Figure 1-1. Bulldozer, earth moving, tank mounting, M8A3, mounted on tank, combat, full tracked, 90-mr. gun, M48A3.
1-2
