Figure 103. Continued.
Section XVI. CRANE HYDRAULIC SYSTEM
179. General
Each hydraulic controller lever is mechanically
connected to a master cylinder. Each master cylinder is
connected to a hydraulic cylinder by a hydraulic line,
and in turn each cylinder is connected to a clutch by a
mechanical linkage. Movement of a lever actuates the
position in the corresponding cylinder. Actuation of a
piston in the cylinder causes hydraulic pressure in the
connecting line and cylinder. As a result, a piston in the
cylinder is actuated and in turn actuates the clutch
through cylinder linkage. When pressure is released, a
return spring causes the cylinder piston to return to its
normal position, and fluid is returned through the
connecting line to the master cylinder.
180. Master Cylinder
a. Removal.
(1) Drain master cylinder.
(2) Remove the master cylinder as instructed
on figure 104.
Figure 104. Hydraulic master cylinder, removal and
b. Cleaning, Inspection, and Repair.
installation.
Caution
Make sure the working area is clean
and dust-free wherever hydraulics or
their
principles
are
involved.
Cleanliness is
AGO 6819A
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