Komatsu D32E-1 Operation & Maintenance Manual page 86

12. OPERATION
2. Depress the brake and decelerator pedal until the machine is stopped.
3. Place the transmission/steering lever in NEUTRAL.
4.
5.
Place the safety lock lever in the ON, locked, (downward) position.
Operate the engine at one half speed (no load) for three to five minutes,
then move the engine speed control lever to the low idle position.
REMARK
Serious damage can result to the engine and turbocharger (if equipped)
if this cool down step is neglected.
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