9.
Depress the accelerator pedal (7) lightly and run the en-
gine at a medium speed for approximately 5 minutes with
no load.
10. Check that the engine rotation has become smoother, then
press the work equipment lock switch (8) to release the
work equipment lock (pilot lamp goes out).
11. Operate the bucket control lever (9) to TILT position (A)
and return to HOLD position (B) repeatedly to warm up the
hydraulic oil.
Oil reaches the relief pressure through the above opera-
tions and hydraulic oil gets warmer in a shorter time.
12. Turn the steering wheel slowly approximately 10 times to the right and left to warm up hydraulic oil in the
steering valve.
k
k
WARNING
A time lag might result until the machine stops after
the turning operation if you turn the steering wheel
and stop turning it at certain position while the oil tem-
perature is low.
In such case, set the frame lock bar to LOCK position
(L) for safety and perform the warm-up operation in a
large place.
At that time, be sure not to relieve the oil pressure in
the circuit for more than 5 seconds.
Repeating the operations from step 10 to 12 moves the
pointer of the engine coolant temperature caution lamp
(10) upward. The pointer of engine coolant temperature
caution lamp (10) once drops at around the center of scale
(C), after that, continue the operations for approximately
10 seconds.
13. Stop the engine.
MAINTENANCE PROCEDURE
MAINTENANCE
4-22
Summary of Contents for WA480-8
Page 2: ......
Page 19: ...Distributor name Address Phone Fax Service personnel FOREWORD PRODUCT INFORMATION 1 17...
Page 29: ...LOCATION OF SAFETY LABELS SAFETY SAFETY LABELS 2 3...
Page 159: ...SWITCHES 1 ECSS switch 2 Front working lamp switch OPERATION EXPLANATION OF COMPONENTS 3 91...
Page 302: ...Securing position Fixing angle A 61 B 53 C 33 D 38 TRANSPORTATION OPERATION 3 234...
Page 324: ......
Page 397: ...Viewed from the rear side of the machine MAINTENANCE MAINTENANCE PROCEDURE 4 73...
Page 402: ......
Page 403: ...SPECIFICATIONS 5 1...
Page 406: ......
Page 422: ......
Page 423: ...REPLACEMENT PARTS 7 1...
Page 439: ......