Filter Element Replacements.

SECTION II (Con't.)

Open the bleed valve and allow air to escape from the low

(B)

pressure filter. Close the valve when air bubbles no

longer appear.

Connect the inch hose assembly to the coupling half.

(C)

Set the outlet selector valve in the inch outlet

(D)

position.

Open the flow control valve.

(E)

Remove the reservoir fill cap. Remove the coupling half

(F)

from the opposite end of the attached inch hose assembly

and insert the open end into the reservoir being careful

not to damage the screen in the filler neck of the reservoir.

Set the fluid volume control at 2 GPM as registered on

(G)

the fluid flow indicator.

Start the test stand and circulate hydraulic fluid through

(H)

the system and back into the reservoir until all traces of

air bubbles are gone from the fluid flowing into the

reservoir.

Stop the test stand and disconnect the hose assembly.

(I)

Cap both ends of the hose assembly and the coupling half

of the test stand.

2-27

Filter Element Replacements.

(A) The high pressure filter and the low pressure filter are

protected with differential pressure switches which, when

the pressure drop across the filter reaches a value at

which change of the filter element is required, illumin-

ates a red warning light on the control panel.

CAUTION: After every replacement of the low pressure

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