A/C Expansion Valve Removal and Installation: Installation

Clean the grooves that fit the O-rings of any dirt or contamination.
Install new O-rings on the evaporator tubes.
Install a expansion valve onto the evaporator tubes.
Insert the expansion valve connector block retaining stud bolts.
Tighten:

Tighten the expansion valve retaining stud bolts to 8 N.m (71 lb-in).

Fig 1: Identifying Expansion Valve Connector Block Retaining Stud Bolts
Courtesy of SUZUKI OF AMERICA CORP.
Install the suction hose/liquid pipe block retaining nuts.
Tighten:

Tighten the suction hose/liquid pipe block-to-expansion valve retaining nuts to 14 N.m (10 lb-ft).
Connect the negative battery cable.
Evacuate and recharge the A/C system. Refer to Discharging, Adding Oil, Evacuating, and Charging Procedures for A/C System .

Fig 2: Identifying Suction Hose/Liquid Pipe Block-To-Expansion Valve Retaining Nuts
Courtesy of SUZUKI OF AMERICA CORP.