MAINTENANCE
7-11
HYDRAULIC SYSTEM
IMPORTANT: Hydraulic equipment such as hydraulic
pumps, control valves, and relief valves
have been adjusted at the factory. Do
not attempt to disassemble or turn the
adjusting screws, as they are very diffi-
cult to readjust.
Consult your authorized dealer if any
trouble should occur.
1. Oil from the main pumps flows through the control
valves to the cylinders and motors. Most return oil
from the control valves flows back to the hydraulic oil
tank via the full-flow filters; a small amount returns via
oil coolers directly. High pressure strainers are pro-
vided in the pump delivery lines between the pumps
and control valves.
2. The solenoid valves actuated by the electric control
levers/pedals send pilot oil from the pilot pumps to
the control valves, moving their spools. This spool
movement routes the pump delivery oil to the cylin-
ders and motors.
3. Relief valves of sufficient capacity are provided in the
control valves, full-flow filters and the pilot and oil
cooler circuits in order to protect each circuit from
abnormally high pressure.
4. The excavator is equipped with an accumulator in the
pilot oil line which makes it possible to operate the
front attachment for a few seconds after the engine
has stopped. The accumulator is charged with high
pressure gas; do not attempt to remove or disassem-
ble it, and do not expose the accumulator to flame.
5. The excavator is equipped with an independent oil
cooler and circulation pump for the pump transmis-
sion, which functions to cool pump transmission oil.
Summary of Contents for EX 3600-6
Page 38: ...SAFETY SIGNS S 29 SS3091469 M146 07 080 ...
Page 40: ...SAFETY SIGNS S 31 SS 410 SS 2835 SS3108517 M18G 01 011 ...
Page 41: ...SAFETY SIGNS S 32 SS 413 M146 01 024 M146 01 025 SS4193223 M146 01 025 ...
Page 42: ...SAFETY SIGNS S 33 SS 449 M146 01 027 SS 710 SS 2836 SS 3091472 SS 2837 ...
Page 43: ...SAFETY SIGNS S 34 MEMO ...
Page 89: ...OPERATOR S STATION 1 46 MEMO ...
Page 107: ...OPERATING THE ENGINE 3 16 MEMO ...
Page 119: ...DRIVING THE MACHINE 4 12 MEMO ...
Page 139: ...OPERATING THE MACHINE 5 20 MEMO ...
Page 166: ...MAINTENANCE 7 27 4 Grouped Grease Fittings 4 Arm Ñ Lubrication Points M146 07 085 4 ...
Page 169: ...MAINTENANCE 7 30 4 Grouped Grease Fittings 4 Arm Ñ Lubrication points M18M 07 036 4 ...
Page 283: ...MAINTENANCE 7 144 MEMO ...
Page 285: ...MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS 9 2 MEMO ...
Page 303: ...SPECIFICATIONS 12 4 MEMO ...