OEM 2009 Chevrolet Cobalt A/C Clutch

2009 Chevrolet Cobalt Parts Questions & Experts Answers

• Q: How to replace the A/C Clutch Assembly (LNF) (2.0L) on 2009 Chevrolet Cobalt?

  A: The first step to replace the compressor clutch assembly (LNF) (2.0L) requires compressor removal. Fit the three 5/16 x 1 inch bolts into the universal spanner wrench (J 37872) after removing its three adjustable dowels. The compressor operates with the j 37872 universal spanner wrench to discard the clutch plate bolt before extracting the compressor clutch plate from the compressor. The compressor pulley snap ring removal requires external snap ring pliers (J 6083) making way for pulley detachment. The external snap ring pliers (J 6083) help remove both the compressor clutch coil snap ring and coil from the compressor assembly. First clear the clutch plate bolt threads with a m6x1.0 tap and then remove any leftover debris using compressed air before adding the compressor clutch coil. Use external snap ring pliers (J 6083) to put back the compressor clutch coil snap ring, followed by reinstalling the compressor pulley and its snap ring with the same tool. Position the 0.4 mm (0.016 in) air gap shim inside the drive plate clutch after applying oil before putting on the compressor clutch plate. First test the drive plate motion by observing its clearance from the pulley while rotating it before performing the gap measurement between the pulley and drive plate. Adjust the shims for a 0.3 to 0.6 mm (0.012 to 0.024 in) air gap. The new drive plate bolt must show colored adhesive across a minimum of five threads prior to its installation. Use the universal spanner wrench (J 37872) to torque the compressor clutch drive plate bolt to 12 nm (9 lb ft). Reinstall the compressor then conduct a leak test on the fittings with the a/c leak detector (J 39400-A).