Landcruiser AWD L6-4.5L (1FZ-FE) (1997)
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Expansion Valve: Testing and Inspection
1. CHECK QUANTITY OF GAS DURING REFRIGERATION CYCLE
2. INSTALL MANIFOLD GAUGE SET
3. RUN ENGINE
Run the engine at 1500 rpm for at least 5 minutes. Then check that the high pressure reading is 1.37 - 1.53 MPa (14 - 16 kgf/Sq.cm 199 - 228
psi).
4. CHECK EXPANSION VALVE
If the expansion valve is faulty, the low pressure reading will drop to 0 kPa (0 kgf/Sq.cm. 0 psi), otherwise it is OK.
HINT: When the low pressure drops to 0 kPa (0 kgf/Sq.cm, 0 psi), feel the receiver's IN and OUT side for zero temperature difference.
