SECTION 35 - HYDRAULIC SYSTEM
35-28
Op. 35 710 02
MAIN SYSTEM PRESSURE TESTS
Check the main system pressure to insure the main
relief valve is within specifications to provide ade-
quate working pressure to the hydraulic system.
The main system pressure can be checked at the
base end of the boom cylinders at 1.
1
12
The main system pressure can also be checked at
the base end of the left bucket cylinder at 1 or at the
auxiliary boom hydraulic quick couplers, 2, if
equipped.
13
To check main system pressure at the boom cylin-
ders, the boom must be up and resting on the boom
lockpins, 1.
14
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