A/C Refrigerant Lines
| • | Ensure that all metal tubing lines are free of dents or kinks
to prevent loss of system capacity due to line restriction. |
| • | Do not bend the flexible hose lines to a radius of less than four
the diameter of the hose. |
| • | Ensure that the flexible hose lines are not closer than 63.5 mm
(2.5 in) to the exhaust manifold. |
| • | Inspect the flexible hose lines regularly for leaks or brittleness.
Replace any deteriorated or leaking lines. |
| • | To prevent entry of moisture and dirt, immediately cap or tape
a refrigerant line after opening the line to the atmosphere. |
| • | Ensure that the connections are tight. |
Notice: Use the correct fastener in the correct location. Replacement fasteners
must be the correct part number for that application. Fasteners requiring
replacement or fasteners requiring the use of thread locking compound or sealant
are identified in the service procedure. Do not use paints, lubricants, or
corrosion inhibitors on fasteners or fastener joint surfaces unless specified.
These coatings affect fastener torque and joint clamping force and may damage
the fastener. Use the correct tightening sequence and specifications when
installing fasteners in order to avoid damage to parts and systems.
Tighten
Tighten the connections to 33 N·m (24 lb ft).
| • | The O-rings and the seats must be in perfect condition. A burr
or a piece of dirt may cause a refrigerant leak. Lubricate the new O-rings
using mineral base 525 viscosity refrigerant oil. DO NOT use
Polyalkylene Glycol (PAG) refrigerant oil. |
| • | DO NOT apply (PAG) oil to the fitting threads. Long term contact
of PAG oil on threads may cause future disassembly difficulties. Flush the
threads of the fittings using mineral base 525 viscosity
refrigerant oil. |
| • | PAG oil will damage painted surfaces. |
