Trane Thermo King V-520 RT SPECTRUM 50 Installation Manual page 44

Installation - Refrigeration Hoses to Vehicle's Compressor
Manifold Fitting C
Connect to Vehicle's
Compressor Only
TOTAL AMOUNT OF OIL REQUIRED
MODEL 50 SPECTRUM = 32 ounces total
Add 4 oz. to the road compressor, see pages 20-21.
Add 23 oz. into the suction hose, see pages 40-41.
NOTE: 5 oz. is already factory installed in system.
NOTE: All oil quantities assume swash plate style
road compressors only.
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