. MAINTENANCE SERVICE PROCEDURE CHECK AIR CONDITIONER COMPRESSOR, ADJUST (If equipped) 4 - 66 (3) Rear drive s haft (2 View from rear of machine (4) Center drive shaft (2 places) View from rear of machine CHECK WATER PUMP Check the wate r pump and its r elative parts for water leak, and if anything abnormal i s found, call on your Komatsu distributor for re pairs o r replacement. As special tool i s required for c hecking and adjusting the parts, request Komatsu dis