Ford Motor Co.

Check compressor oil level only if any portion of refrigerant system is being replaced, or if system was discharged due to a leak.

On horizontally mounted compressors, oil check hole is located on side of crankshaft which faces up. On opposite or downward side there is a corresponding boss provided on inner wall as an alternate oil check hole, for different mounting. When checking oil level on such a compressor, angle the dipstick such that it bottoms against lower side of compressor and not against boss.

Fig 1: CHECKING COMPRESSOR OIL LEVEL

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1. After system has been charged, operate for approximately 10 minutes, or until pressures have stabilized (with ambient temperature of 60°F or higher).
2. Stop engine. With suitable Schrader-Type service valve, discharge entire system. Remove oil filler plug, insert suitable dipstick (see Fig 2) until it bottoms. If necessary, slightly rotate compressor crankshaft by hand so that dipstick will clear crankshaft. Level on dipstick must be within specifications.
   Fig 2: TECUMSEH COMPRESSOR OIL LEVEL DIPSTICK

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