Toyota 88515-52040
Expansion Valve

Refrigerant discharge from the refrigeration system must be performed first as part of expansion valve service work. You must disconnect the A/C unit's liquid tube and suction hose before separating the expansion valve from the evaporator by using a hexagon wrench (5.0 mm, 0.20 in.) to remove its 2 bolts. The installation torque should be 5.4 Nm (55 kg.cm, 48 in.lb). New O-rings receive compressor oil lubrication before going on the expansion valve. Then secure the unit with two bolts tight by using a hexagon wrench set at 5.0 mm, 0.20 in. at 3.4 Nm torque (35 kg.cm and 30 in.lb). After connecting the liquid tube with the suction hose complete the charging process by evacuating the refrigeration system and adding 460 plus or minus 30 g (16.23 plus or minus 1.06 oz) refrigerant under strict leakage inspection.

The first step before replacement of the expansion valve requires a refrigerant discharge procedure from the refrigeration system. Begin by detaching the liquid tube and suction hose from the A/C unit. Then use a hexagon wrench (5.0 mm, 0.20 in.) to remove the 2 bolts which will separate the expansion valve from the evaporator when applied at 5.4 N.m (55 kgf.cm, 48 in.lbf). To install the new expansion valve begin by applying compressor oil to 2 new O-rings before placing them on the valve and fastening the valve with the two bolts through hexagonal wrench (5.0 mm, 0.20 in.) while winding the bolts at 3.4 N.m (35 kgf.cm, 30 in.lbf). Follow this step by connecting the liquid tube and suction hose after pumping refrigerant of 460 +/ - 30 g (16.23 +/ - 1.06 oz) into the system after air evacuation. Perform a leakage check during the process.