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C5 A/C COMPRESSOR HOSE REPLACEMENT
There’s a plastic retainer that has to be removed from the re- charging canister before the gauge/hose assembly is screwed on.
Screw the hose onto the manifold recharge fitting and swing the can from side to side while pressing the trigger; watch the gauge.
When the gauge indicated the charge was complete, we took the cabin temperature and it was 57.9 degrees – cool!