k
k
WARNING
• When the machine stops, chock the tires immediately.
• For the maximum permissible speed when traveling downhill using the retarder brake, see the
brake performance curve for the downhill distance and grade.
Traveling continuously downhill at a speed greater than the maximum permitted speed on the brake
performance curve is dangerous as the retarder brake may be damaged.
• If the retarder oil temperature caution lamp on the machine monitor lights up when the retarder is
being used, shift down to travel downhill.
(In this case, the centralized warning lamp lights up and alarm buzzer sounds.)
If the retarder oil temperature caution lamp does not go out even when the transmission is shifted
down, stop the machine immediately, set the gear shift lever to NEUTRAL position (N), run the en-
gine at 1800 rpm and wait until the retarder oil temperature caution lamp goes out.
• If the retarder brake loses its effect when it is used for traveling downhill, do as follows.
1.
Return the retarder control lever to its original position once completely, then operate the re-
tarder control lever again.
2.
If the retarder still has not effect even when the retarder control lever is operated again, return
the retarder control lever completely to “RELEASE” position, and depress the brake pedal to
stop the machine, then contact your Komatsu distributor for repair.
• Operate the retarder control lever gradually.
Sudden braking may cause an accident due to tire slip, and it is dangerous.
• When traveling, and particularly when traveling downhill, never set the gear shift lever to NEUTRAL
position (N).
If the gear shift lever is set to NEUTRAL position (N) while the machine is traveling at the travel
speed of 4 km/h or higher or traveling downhill, the gear speed is not changed to neutral. The cen-
tralized warning lamp flashes and the alarm buzzer sounds. Always set the gear shift lever in D to L
position while traveling.
NOTICE
• If the retarder control lever is operated when traveling downhill, the transmission can be shifted
down sooner than with normal deceleration.
The machine can also travel without shifting up the gear.
• Do not accelerate or shift up the gear when using the retarder.
The engine speed rises and the alarm buzzer may sound and the engine overrun caution lamp and
centralized warning lamp may light up.
• Do not use the foot brake during traveling downhill except in an emergency. Otherwise, the front
brake becomes worn excessively or overheated, and the service life of the brake will be reduced.
MACHINE OPERATIONS AND CONTROLS
OPERATION
3-208
Содержание HD325-8
Страница 2: ......
Страница 13: ...FOREWORD INTRODUCTION 1 11 ...
Страница 25: ...LOCATION OF SAFETY LABELS SAFETY SAFETY LABELS 2 3 ...
Страница 26: ...SAFETY LABELS SAFETY 2 4 ...
Страница 61: ...OPERATION Please read and make sure that you understand the SAFETY section before reading this section 3 1 ...
Страница 275: ...Brake performance Downhill distance 450 m Tire size 18 00R33 OPERATION MACHINE OPERATIONS AND CONTROLS 3 215 ...
Страница 276: ...Brake performance Downhill distance 600 m Tire size 18 00R33 MACHINE OPERATIONS AND CONTROLS OPERATION 3 216 ...
Страница 277: ...Brake performance Downhill distance 900 m Tire size 18 00R33 OPERATION MACHINE OPERATIONS AND CONTROLS 3 217 ...
Страница 278: ...Brake performance Downhill distance 1500 m Tire size 18 00R33 MACHINE OPERATIONS AND CONTROLS OPERATION 3 218 ...
Страница 281: ...Brake performance Downhill distance 450 m Tire size 21 00R33 OPERATION MACHINE OPERATIONS AND CONTROLS 3 221 ...
Страница 282: ...Brake performance Downhill distance 600 m Tire size 21 00R33 MACHINE OPERATIONS AND CONTROLS OPERATION 3 222 ...
Страница 283: ...Brake performance Downhill distance 900 m Tire size 21 00R33 OPERATION MACHINE OPERATIONS AND CONTROLS 3 223 ...
Страница 284: ...Brake performance Downhill distance 1500 m Tire size 21 00R33 MACHINE OPERATIONS AND CONTROLS OPERATION 3 224 ...
Страница 340: ......
Страница 341: ...MAINTENANCE Please read and make sure that you understand the SAFETY section before reading this section 4 1 ...
Страница 424: ......
Страница 425: ...SPECIFICATIONS 5 1 ...
Страница 429: ...ATTACHMENTS AND OP TIONS Before reading this chapter read and understand the SAFETY 6 1 ...
Страница 447: ...REPLACEMENT PARTS 7 1 ...
Страница 463: ......
Страница 464: ...HD325 8 HD405 8 Dump Truck Form No EENAM03582 2018 KOMATSU All Rights Reserved Printed in Belgium 06 2018 ...