Komatsu Utility WB97S-5, Operation & Maintenance Manual

Page: 134 / 280

USE OF THE MACHINE
132
3.6.3 WARMING THE ENGINE
1 - After starting the engine, let it warm up before starting work.
2 - The ideal warming up of the engine is achieved with a constant speed of 1200 rpm, obtained with the hand
accelerator (see "3.3.5 pos. 6 - HAND ACCELERATOR").
IMPORTANT
q
Do not accelerate completely or abruptly until the coolant temperature has reached at least 60°C, which
can be checked through the indicator provided on the dashboard.
3 - To reduce the time necessary to warm up the engine, accelerate now and then, up to maximum 1800 rpm.
4 - While warming up the engine, check the colour of the exhaust gas and be careful to anomalous noises or
vibrations; any abnormal situation must be examined thoroughly and its cause must be immediately
eliminated.
3.6.4 HEATING THE HYDRAULIC OIL
When warming up the engine, especially in the cold season, it is advisable to heat also the hydraulic system oil.
For this purpose, when the coolant temperature has reached approximately 60°C, proceed as follows:
1 - Press the servo control locking button (LED off) to release the controls (see "3.3.2 pos. 12 - SERVO
CONTROL LOCKING BUTTON").
2 - Lift and rotate the front bucket slowly and completely for several times.
3 - Lower the bucket to the ground and press the button again (LED on) to lock the control lever.
4 - Rotate the seat by 180°.
5 - Press the button again (LED off) to release the controls (see "3.3.2 pos. 12 - SERVO CONTROL LOCKING
BUTTON").
6 - Extend and retract the arm and the bucket completely for several times.
7 - Lock the levers again and rotate the seat to the driving position.
https://tractormanualz.com