Golf GTI L4-1984cc 2.0L DOHC (9A) (1990)
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Install shaft seal sleeve protector over compressor shaft (Mastercool tool No. 90907 or equivalent)
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Dip new shaft seal assembly (4) in clean, new refrigerant oil.
Caution:
Do not touch the sealing surfaces of the shaft seal. Skin oil will contaminate the seal and cause it to leak.
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Engage seal remover/installer (Mastercool tool No. 90906 for Sanden SD-508 or Mastercool tool No. 91138 for Sanden SD-709, or equivalent tools)
into slots of shaft seal assembly (4).
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Insert shaft seal (4) into compressor seal cavity firmly.
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Twist installer tool in opposite direction to disengage tool from shaft seal.
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Remove tool and shaft seal protector from compressor shaft.
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Coat new 0-ring (5) with new clean refrigerant oil.
Caution:
Do not scratch the 0-ring groove. Scratches will cause refrigerant leaks in the seal area.
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On SD-508 model compressors place 0-ring (5) into 0-ring groove in case using 0-ring hook.
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On SD-709 model compressors install new 0-ring on new seal seat and coat with clean refrigerant oil.
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Coat seal seat (6) with clean, new refrigerant oil.
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Install seal seat (6) with installer/removal tool (Mastercool tool No. 90414 for SD-508 and Mastercool tool No. 91139 for SD-709 or equivalent
tools.)
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Press lightly against seal seat (6) with tool to insure proper seating of seal seat.
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Install snap ring (7) with snap ring pliers (Mastercool tool No. 90903 or equivalent.) Beveled edge lies outward (toward clutch) and flat side towards
compressor.
Note:
It may be necessary to lightly tap the snap ring to securely position it in the snap ring groove.
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Dip new felt ring (8) into fresh, clean refrigerant oil and install on to compressor shaft.