GM 25886926
Compressor Clutch

Before installing the new compressor clutch assembly (LNF) users must remove the compressor and eliminate the three adjustable dowels from the j 37872 before adding three 5/16 x 1 inch bolts as replacements. Use j 37872 to hold the compressor clutch plate before using it to remove the assembly. First extract the compressor pulley snap ring with j 6083 before removing both the compressor pulley and the compressor clutch coil snap ring with j 6083. Use the j 6083 to remove the compressor clutch coil snap ring then extract the compressor clutch coil from the assembly. Clear the threads of the clutch plate bolt using a m6x1.0 tap then sweep away debris with compressed air before installing the compressor clutch coil. Use the j 6083 to position the clutch coil snap ring before setting the compressor pulley into place using this same tool. Place a 0.4 mm (0.016 in) air gap shim inside the clutch drive plate after it receives a small amount of oil and install the compressor clutch plate while checking for pulley-drag during rotation. Measure the pulley-drive plate distance using shims to create a 0.3 to 0.6 millimeter (0.012 to 0.024 inch) air gap. Use the j 37872 to hang the compressor clutch plate while you install the clutch drive plate bolt with a minimum of 5 threads covered by colored adhesive. Tighten the bolt to 12 n.m (9 lb ft). Reinstall the compressor followed by leak testing all fittings with tool number j 39400-a.

Perform a leak test on the fittings with the A/C Leak Detector (J 39400-A).

Ensure the drive plate does not drag against the pulley when rotated, then measure the air gap between the pulley and the drive plate, adjusting the shims to achieve a 0.3-0.6 mm (0.012-0.024 in) air gap.

Install the new clutch drive plate bolt, ensuring it has colored adhesive on at least 5 threads, and tighten it to 12 N.m (9 lb ft) using the Universal Spanner Wrench (J 37872) to hold the compressor clutch plate from turning.

Use the External Snap Ring Pliers (J 6083) to take off the compressor pulley snap ring.

Reinstall it, then place the clutch plate onto the A/C compressor and secure it with the original retaining nut using J 37872, tightening to 25 Nm (18 lb ft).

Place the clutch plate onto the A/C compressor, install the original clutch plate retaining nut, and use the J 37872 to hold the clutch from rotating while tightening to 25 N.m (18 lb ft).

Perform a leak test on the fittings using the J 39400-A.