24. SERVICE PROCEDURE 24.1.10 THERMOSTATS REMOVAL 1. Drain the cooling system. Refer to “DRAINING THE SYSTEM’ in this section. 2. Remove the components and housing to acces the thermostats a. 3. Remove the thermostats and clean all gasket material from either mating surfaces. INSTALLATION 1. Install two new thermostats with new gasket. 2. Re-install thermostat housing and all component parts. 3. Fill the cooling system. Refer to “COOLING THE SYSTEM?” in this section. 24.1.11 FAN A WARNING Personal injury can result from a fan blade failure. Never pull or pry on the fan. This can damage the fan blade(s) and cause fan failure.
Check the fan for cracks, loose rivets (for metal fans) and bent or loose blades. Make sure it is securely mounted. Tighten the capscrews if LOGARO12 loose. Replace damaged fans. 24.1.12 CHECK AND TIGHTEN TRACK SHOE BOLTS lf the machine is used with track shoe bolts @) loose, they will break, so tighten any loose bolts immediately. Method for tightening 1. Tighten first to a tightening torque of 390 + 40 Nm (40 + 4 kgm, 290 + 30Ib ft) , then check that the nut and shoe are in close contact with the link mating surface. 2. £19992 After checking, tighten a further 120° + 10°. 3-32 PC160/180/20: - “NG Order for tightening Tighten the bolts in the order shown in the diagram.
After tightening, check that the nut and shoe are in close contact with the link mating surface.