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Do NOT pre-lube the seal lip with oil — the Teflon must run dry until break-in
Spring brake fails to release or apply fully
Detroit Diesel: A0029974271
19 in Inner Diameter 6
Freightliner A22-30930-001 Pressure Switch – High Pressure NC 1/4" ETECH Do NOT pre-lube the sealDirect fit pressure switch for heavy duty truck A C systems, marked 2601237. This normally closed switch features a 1 4" female fitting, closes at 180 PSI and opens at 265 PSI, and comes with an integrated harness. Compatible with R12 R134a refrigerant systems on Business Class M2 and FL Series models. Signs You Need a New Pressure Switch Compressor clutch not engaging when A C is activated Air conditioning blows warm air instead of cold High pressure
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