Mitsubishi S12R-Y1PTA, Руководство по эксплуатации и техническому обслуживанию

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Chapter 8 PERIODIC INSPECTION AND MAINTENANCE PROCEDURES
Cooling system - Clean
1. Close coolant drain cocks and plugs.
2. Pour in a cleaning solution (a solution that is non-
corrosive to rubber and metals) in 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. Pour in fresh water, and operate the engine at 800
to 900 min
-1
for about 10 minutes.
Repeat rinsing until the draining water becomes
clear and clean.
Fig. 8-18 Coolant drain cock (water pump)
Coolant - Refill
1. Close coolant drain cocks and plugs.
2. Remove the radiator filler cap, and pour in undilut-
ed LLC.
Note: Determine the amounts of LLC and water to be
added by using the LLC concentration chart.
For the coolant, refer to "COOLANT" (6-1) . For
the coolant capacity, refer to "MAIN SPECIFICA-
TIONS" (12-1) .
3. Pour in water (soft water with minimal impurities,
such as tap water) slowly to the full level.
4. Check the radiator and other parts for coolant
leaks. If a coolant leak is found, repair it.
5. When coolant reaches the full level, close the radi-
ator cap securely.
6. While pulling the stop lever, rotate the crankshaft
for approx. 10 seconds to turn on the starter. Stop
the operation for 1 minute, then, repeat the opera-
tion two or three times to bleed the cooling system.
Note: Prepare for the Cooling system.
7. Check the coolant level in the radiator.
If the engine is equipped with a reserve tank, fill the
reserve tank with coolant to the "FULL" level line as
well.
Fig. 8-19 Radiator coolant level
Fig. 8-20 Reserve tank
Clean the cooling system when operating the engine
or heat exchange equipment first time, or restarting
the engine after storage with coolant drained.
Coolant
drain cock
Always use the coolant with the same LLC concen-
tration.