Mitsubishi Fuso CANTER FE85DE6SLGP, Shop Manual

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14
14-29
Inspection procedure
Inspection: Pressure cap
(1) Pressure valve opening pressure
•
Replace the pressure cap if the measured value deviates from
the standard value range.
(2) Inspection of vent valve
•
Before starting the inspection, check the level of coolant in the
reservoir tank.
• Run the engine at full speed. Stop the engine when the level of
coolant in the reservoir tank noticeably rises.
• Wait until the coolant temperature drops to the ambient tempera-
ture. Then, check if the coolant in the reservoir tank has returned
to the same level as that confirmed before the engine was start-
ed.
• If the coolant has failed to return to its original level, the vent
valve is defective. In this case, replace the pressure cap.
CAUTION
• Be aware that removing the pressure cap before the coolant
cools down to the ambient temperature will result in loss of
vacuum in the radiator, which disables the coolant from be-
ing returned to the reservoir tank.