Volvo Workshop Manuals
940 L4-2.3L SOHC VIN 88 B230F (1992)
Maintenance > Fluids > Refrigerant > Component Information > Technical Service Bulletins > A/C - Converting R12 System to R134a > Page 2973
To replace the compressor, see Service Manual.
Install new orifice
If new orifice has a black 0-ring installed, discard the black 0-ring. Install new yellow, 0-ring, (inner dia. 6.7 mm) (use ester oil) on the new orifice.
Install a yellow lubricated 0-ring, (inner dia. 10.8 mm) in the pipe joint at the firewall or side member.
Install orifice and connect pipes.
Tighten the nut on the joint to 12 Nm (9 ft. lb.)
Prepare new accumulator
Fill accumulator with ester oil on the inlet side.
If compressor was replaced in previous step, no ester oil is needed for the accumulator.
Save residual oil in can to lubricate 0-rings.
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