LUBRICATION INSTRUCTIONS (Contd)
CHANGING SYSTEM HYDRAULIC OIL (Contd)
c. Raise secondary boom cylinder using control valves KY1 and KY14.
d. Operate rear pin wheel drive using, control valves KY1, KY-6, or KY7 for about 15 seconds.
e. Operate front pin wheel drive using, control valves KY1, KY4, or KY5 for about 15 seconds.
Operate winch control valve KY22 and emergency switch for about 15 seconds.
Do not let oil reservoir run completely out of oil as cylinders are
being retracted or lowered. Add oil if necessary to reservoir.
g. Retract lifting cylinders using, control valves KY1 & KY16.
h. Lower secondary boom cylinder, using control valves KY1 & KY 15.
Retract supporting cylinders, using control valves KY1, KY11, and KY9.
k. Unlock main pressure control valve KY1 and stop LPU.
Fill hydraulic reservoir to level on site glass and install reservoir cover.
10. Remove hose from barrel and install quick-disconnect coupling on hose.
11. Connect quick-disconnect coupling on pallet.
12. Retrieve bridge from ground. Refer to TM 5-5420-280-10.