LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 1989 >> Astro Van M L4-151 2.5L >> Repair and Diagnosis >> Heating and Air Conditioning >> Compressor HVAC >> Service and Repair >> Major Compressor Repair Procedures >> With SD-709 Compressor >> Leak Check
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Leak Check

Before disassembling any compressor components, check for leaks in the following areas:

1. Feel under the seal area between the clutch and compressor to check for oil seeping in the shaft seal area. If so, the seal will have to be replaced.
2. Check for dislocation of the front housing O-ring (protruding section). Replace the compressor.
3. Oil around the cylinder head gasket or fittings. Replace leaking component.
4. Oil around the filler hole. If the O-ring is damaged, it can be replaced. If the threads are stripped, replace the compressor.
5. Oil leaking from cracks in the cylinder block. Replace the compressor.