CHAPTER 12: MAINTENANCE OF MAIN HYDRAULIC SYSTEM
TM 9-2350-256-20
12-2 REPLACE HYDRAULIC LINES AND FITTINGS--Continued
b. INSTALLATION
WARNING
Hydraulic fluid under pressure can penetrate skin or damage eyes. Fluid leaks under pressure
may not be visible, use a piece of cardboard or wood to find leaks, but do not use bare hand. Wear
safety goggles for protection. If fluid enters skin or eye, get immediate medical attention.
Do not attempt to loosen or tighten hydraulic fittings or lines when the system is pressurized.
Ensure that the boom is in the stowed position before doing any maintenance on the hydraulic
system.
Do not move under any hydraulically controlled implement when making adjustments or repairs
to hydraulic system. Lower implement and work from above. If implement must be raised for
access, always block to support. If implement drops, injury to personnel can result.
Install lines and fittings as required using legends, locator views, Tables 12-3 and 12-5 for equipment conditions,
Tables 12-4 and 12-6 for port routing and the line/fitting illustration as a guide.
12-3 REPLACE HYDRAULIC CONNECTING PANEL
THIS TASK COVERS
a. Removal
b. Installation
INITIAL SET-UP
Materials/Parts:
Equipment Condition:
Lockwashers (10) (Appendix G, item 150)
Air cleaner (right-side) removed (see paragraph
Gasket (Appendix G, item 62)
4-24)
Sealant tape (Appendix D, item 29)
Rear right-side floor plate removed (see
paragraph 9-6)
Hydraulic connections access cover removed (see
paragraph 9-7)
a. REMOVAL
WARNING
Hydraulic fluid under pressure can penetrate skin or damage eyes. Fluid leaks under pressure may not be
visible, use a piece of cardboard or wood to find leaks, but do not use bare hand. Wear safety goggles for
protection. If fluid enters skin or eye, get immediate medical attention.
Do not attempt to loosen or tighten hydraulic fittings or lines when the system is pressurized. Ensure that the
boom is in the stowed position before doing any maintenance on the hydraulic system.
1 Disconnect hydraulic lines on both sides of the bulkhead and tag each line with the port number from which
it was removed.
2 Remove 10 screws (1), 10 lockwashers (2), hose connecting panel (3) and gasket (4). Discard gasket.
12-26
