TM 5-5420-280-23&P
0016 00
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.
f.
Operate winch control valve KY22 and emergency switch for about 15 seconds.
NOTE
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.
i.
Retract supporting cylinders, using control valves KY1, KY11, and KY9.
k. Unlock main pressure control valve KY1 and stop LPU.
l.
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.
FLOW
CONTROL
VALVE
KY19
KY10
KY7
KY15
KY8
KY17
KY4
KY13
KY5
KY6
KY9
KY12
KY16
KY11
KY23
KY21
KY22
KY14
KY1
KY18
0016 00-3
Change 1
