ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
TEST OR INSPECTION
HYDRAULIC SYSTEM - CONTINUED
FLUID CLOUDY OR CONTAMINATED - CONTINUED
Step 2. Flush the hydraulic system.
a. Remove return line (1) using two 9/16-inch wrenches, and cover inlet (2) with rag.
b. Remove insert (3) using pipe wrench, and put into return line (1) using two 9/16-inch
Put a length of 1 1/2-inch l.D. hose onto insert. Secure with hose clamp, and put into
d. Remove return line filter body (4) and element (5). Get rid of element (5). Install body
(4) using 3/8-inch hex key.
e. Fill tank (6) with new fluid (LO 9-2320-269-12).
Have assistant start engine and run the derrick through all operations (TM 9-2320-269-
g. Repeat step 2e as needed, operate all hydraulic components, and shut off engine (TM
h. Using transfer pump with flexible hose, pump remaining fluid from tank (6) into
i. Install new in-tank filter (7) using adjustable wrench, and install cover (8) using 3/8-inch
Remove return line filter body (4), install new filter element (5), and install body (4)
using 3/8-inch hex key.
Remove return line insert (3) from hose, using two 9/16-inch wrenches.
Uncover inlet (2), and install insert (3) using pipe wrench.
m. Install return line (1) using two 9/16-inch wrenches.
n. Fill tank (6) with new fluid (LO 9-2320-269-12), and screw on filler cap (9).