Mitsubishi S16R2-PTAW, Руководство по эксплуатации и техническому обслуживанию

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8-18
Chapter 8 PERIODIC INSPECTION AND MAINTENANCE PROCEDURES
Coolant - Drain
1.
To drain coolant immediately after engine opera-
tion, run the engine at low idle for 5 to 6 minutes to
lower the coolant temperature to 70 to 80 °C [158
to 176 °F].
2.
Open the coolant inlet.
3.
Place coolant receiving cans under the drain cocks
and plugs, and open the coolant drain cocks and
plugs to drain the coolant.
Fig. 8-20 Coolant Drain Cock (Engine)
Cooling System - Clean
1.
Close coolant drain cocks and plugs.
2.
Pour a cleaning solution (a solution that is non-cor-
rosive to rubber and metals) into the cooling sys-
tem, and operate the engine at 800 to 900 min
-1
for
about 15 minutes, then drain the cleaning solution.
3.
Close coolant drain cocks and plugs.
4.
Add fresh water and operate the engine at 800 to
900 min -1 for about 10 minutes.
Repeat the above rinsing steps until the draining
water becomes clear and clean.
Fig. 8-21 Coolant Drain Cock (water pump)
Coolant
drain cocks
Left side
Right side
The coolant drain cocks located in the crankcase
(behind the each fuel injection pump
accessory drive unit respectively).
Wash the cooling system before operating the
engine for the first time, or starting the engine after it
has been in storage under coolant drained condition.
Coolant
drain cock