TM 5-2420-230-24-1
a. Release Hydraulic System Pressure.
The IHMEE hydraulic system operates at oil pressures up to 3,000 psi (20 680 kPa). Never
disconnect any hydraulic line or fitting without first dropping system pressure to zero. Failure to
comply may result in injury or death to personnel.
Hydraulic fluid (Dexron III) is TOXIC. Wear protective goggles and gloves; use only in
well-ventilated area; avoid contact with skin, eyes, and clothes. Skin and clothing that come in
contact with hydraulic oil should be washed immediately. Saturated clothing should be removed
immediately. Failure to comply may result in injury to personnel.
NOTE
The FEL lift cylinder and tilt cylinders are fitted with load-holding valves. The following procedure
will not release hydraulic pressure contained in them.
Prior to working on any hydraulic circuit, release
hydraulic pressure:
(1)
Locate FEL hydraulic valve block at base of
windshield.
(2)
Use hydraulic valve manual override lever to
operate each valve back and forth until all
hydraulic pressure is exhausted.
(3)
Locate backhoe hydraulic valve block under
backhoe top plate.
(4)
Use hydraulic valve manual override lever to
operate each valve back and forth until all
pressure is exhausted.
Change 1
10-4
