MWO-5-2350-262-35-4

MWO 5--2350--262--35--4

3--59

SECTION III MODIFICATION OF MAIN HYDRAULIC FILTER AREA

-- CONTINUED

3--10 MODIFICATIONS TO MAIN PUMP RIGHT HYDRAULIC FILTER AREA – INCLUDING

ADDITION OF BALL VALVE V21 AND PRESSURE TRANSDUCER T3 --

CONTINUED

Attach pressure relief valve, 1A30--01--V--8T1--D--430, (21) (relocated from behind left main manifold and

now set to 4300 psi (29647.46 kilopascal)) to bottom of manual ball valve (28). Ensure that pressure

relief valve has been set to 4300 PSI (29647.46 kilopascal).

Install 90--degree adapter, 13211E9018--12, (23) and o--ring, MS28778--8, (22) on front face of relief

valve (21).

At top of filter assembly, install union elbow, 8--6 ETX--S, (1) on top port of swivel nut tee (31).

Install adapter, 8F650X--SS, (20) and o--ring, MS28778--8, (19) on bottom port of pressure relief valve

(21).

Install diagnostic tee adapter, 8--4XHX6G5TP, (18) on adapter, 8F650X--SS, (20).

Install pressure transducer, 12496923, (10) and o--ring, MS28778--4, (11) on diagnostic tee adapter (18).

This pressure transducer has been functionally designated as T3.

Install saved adapter, 8F650X--SS, (12) and o--ring, MS28778--8, (13) on bottom of diagnostic tee

adapter (18).

Install (previously removed) male/female quick--disconnect (QD) fitting (14) and o--ring, MS28778--4,

(15), noting difference in male/female QD connections for left and right filter assemblies.

aa. Place “V21 MAIN PUMP” label, 12496928--1, on flat portion (to the right of handle) of ball valve (28).

ab. Connect new hydraulic relief bypass hose, 13214E2501--12, (7) between port T 13R of pressure relief

valve (21) and union elbow (1) (connected through swivel nut tee (31)) connected to inlet port 13R of filter

manifold.

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