On-Vehicle Service; Engine Coolant Leak Checking; Radiator Cap Valve Opening Pressure Check - Mitsubishi Pajero Pinin 1999 Workshop Manual

14-8
ENGINE COOLING ±

ON-VEHICLE SERVICE

ENGINE COOLANT LEAK CHECKING

Cap adapter
1. Confirm that the coolant level is up to the filler neck. Install
Adapter
2. If there is leakage, repair or replace the appropriate part.
RADIATOR CAP VALVE OPENING PRESSURE
CHECK
1. Use a cap adapter to attach the cap to the radiator cap
Cap adapter
2. Increase the pressure until the indicator of the gauge stops
3. Replace the radiator cap if the reading does not remain
On-vehicle Service
a radiator cap tester, adapter and cap adapter to the filler
neck, and apply 160 kPa pressure, and then check for
leakage from the radiator hose or connections.
Caution
(1) Be sure to completely clean away any moisture
from the places checked.
(2) When the tester is taken out, be careful not to
spill any coolant from it.
(3) Be careful, when installing and removing the tester
and when testing, not to deform the radiator filler
neck.
tester.
moving.
Standard value: 75 ± 105 kPa
Limit: 65 kPa
at or above the limit.
NOTE
Be sure that the cap is clean before testing, since rust
or other foreign material on the cap seal will cause an
improper indication.