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4. WARMING-UP OPERATION
The most suitable temperature for the hy-
draulic oil is about 50°C (112°F).
It can cause serious trouble in the hydraulic
system by sudden operation when the hy-
draulic oil temperature is below 25°C (77°F).
The temperature must be raised to at least
25°C (77°F) before starting work.
1)
Run the engine at low idling for 5 minutes.
2)
Speed up the idling and run the engine at mid-
range speed.
3)
Push the pilot cut off switch to the ON position.
4)
Lift the boom slightly and extend the bucket cyl-
inder to the stroke end to relieve hydraulic pres-
sure.
Do not leave hydraulic pressure re-
lieved for more than 30 seconds.
5)
Shorten the bucket cylinder to the stroke end to
relieve hydraulic pressure.
Do not leave hydraulic pressure re-
lieved for more than 30 seconds.
6)
Repeat the procedure 4)–5) several times until
the warm-up operation is completed.
5 minute
warming-up
Gear selector lever
Pilot cut off switch
ON
Parking brake switch
4-7
Summary of Contents for HL930A
Page 1: ...WHEEL LOADER OPERATION MAINTENANCE MANUAL HL930A HL930A XT Serial No ...
Page 2: ......
Page 4: ......
Page 25: ...1 CALIFORNIA PROPOSITION 65 SAFETY HINTS 1 1 ...
Page 133: ...13 REAR CAMERA option 1 The rear camera is available as a option Refer to page 3 39 3 75 ...
Page 147: ...15 CAMERA MONITOR OPTION 3 89 ...
Page 149: ... 2 Interlocked with other devices 3 91 ...
Page 150: ... 3 Operation scenario Single camera mode 3 92 ...
Page 151: ... 4 Operation scenario AAVM mode 3 93 ...
Page 152: ... 5 AAVM view mode type 3 94 ...
Page 153: ... 6 Function menu tree Single cam mode 3 95 ...
Page 154: ... 7 Function menu tree AAVM mode 3 96 ...
Page 155: ... 8 Parking guide line adjust 3 97 ...
Page 156: ... 9 How to set function menu 3 98 ...
Page 157: ... 10 Composition of menu screen 3 99 ...
Page 158: ... 11 Value adjustment 3 100 ...
Page 159: ... 12 When radar mounted monitor display 3 101 ...
Page 160: ......
Page 260: ...9 2 ...
Page 261: ......
Page 262: ...EN English E1 September 2020 PART NO 91WA 32040 ...