TM 5-2420-230-10
Attachment
Flow Rate
Engine Speed
Compactor
9 gpm (35 L/min)
Idle
Rock Hammer
21 gpm (80 L/min)
1,800 RPM
Auger
21 gpm (80 L/min)
1,800 RPM
c. Disconnection.
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 serious 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.
Ensure that only the indicated auxiliary valve is operated. You are within the backhoe crush zone
when operating the backhoe auxiliary valve. Manual operation of any other valves can cause
serious injury or death.
(1)
Locate backhoe hydraulic valve block (1) under backhoe top plate.
(2)
Use hydraulic valve manual override lever (2) to operate auxiliary valve (3) until all hydraulic pressure is
exhausted.
(3)
Using a clean rag, clean quick disconnect couplings and area around connectors.
(4)
Disconnect attachment hydraulic lines from backhoe quick disconnect couplings.
(5)
Install dust caps on quick disconnect couplings for attachment and backhoe connectors.
(6)
Start engine (Para 5-2).
(7)
Operate controls to retract coupler cylinder until attachment rotates out and obtains point of balance (Para 7-5).
Change 1
