Section 12 - Air Equipment - Group 12 Air Compressor - Cleaning and Inspection for Reuse (12-01) M11 Page 12-7 Visually inspect the compressor drive gear and the fuel pump drive coupling for wear or damage. Measure the single cylinder air compressor crankshaft end clearance. Crankshaft End Clearance mm in 0.05 MIN 0.002 0.15 MAX 0.006 Measure the two cylinder air compressor crankshaft end clearance. Crankshaft End Clearance mm in 0.05 MIN 0.002 0.19 MAX 0.008 If cracked or damaged parts are found or the end clear- ance exceeds the limits specified, the air compressor must be rebuilt or replaced. Refer to Shop Manual, Bul- letin No. 3810242 or 3810457, for single cylinder.
Refer to Bulletin No. 3810257 for ST676, or Bulletin No. 3810347 for ST773 two cylinder air compressor rebuild instructions.