PREVOST H3-41 Maintenance Manual page 109

CONTENTS
1 TORQUE TABLES ............................................................................................................................................. 4
1.1 HOSE CLAMPS ................................................................................................................................................ 4
1.2 PULLEY, IDLERS & TENSIONERS ...................................................................................................................... 5
1.3 COOLING FAN DRIVE MECHANISM ................................................................................................................ 6
1.4 RIGHT ANGLE GEARBOX ................................................................................................................................. 7
1.5 MISCELLANEOUS TORQUES ........................................................................................................................... 8
DESCRIPTION ......................................................................................................................................................... 9
2 MAINTENANCE ............................................................................................................................................. 10
2.1 GENERAL RECOMMENDATIONS .................................................................................................................. 10
3 HOSES .......................................................................................................................................................... 10
3.1 HOSE CLAMPS ON COOLANT LINES ............................................................................................................. 10
3.1.1 OETIKER SCREW CLAMPS ..................................................................................................................... 12
3.2 CONSTANT-TORQUE HOSE CLAMPS ON CHARGE AIR COOLER (CAC) SYSTEM ............................................ 12
4 THERMOSTAT OPERATION ........................................................................................................................... 13
4.1 THERMOSTAT REPLACEMENT ...................................................................................................................... 13
4.2 CHECKING THERMOSTAT ............................................................................................................................. 13
5 COOLANT ..................................................................................................................................................... 13
5.1 COOLANT LEVEL VERIFICATION ................................................................................................................... 13
5.2 COOLANT LEVEL SENSOR ............................................................................................................................. 13
5.3 THAWING COOLING SYSTEM ....................................................................................................................... 14
5.4 COOLING SYSTEM RECOMMENDATIONS ..................................................................................................... 14
5.5 COOLANT RECOMMENDATIONS FOR VOLVO D13 ENGINE ......................................................................... 14
5.6 COOLANT SAMPLING ................................................................................................................................... 15
6 DRAINING COOLING SYSTEM ........................................................................................................................ 15
7 FILLING COOLING SYSTEM ............................................................................................................................ 17
8 FLUSHING ..................................................................................................................................................... 17
8.1 COOLING SYSTEM DESCALERS ..................................................................................................................... 18
8.2 REVERSE FLUSHING ...................................................................................................................................... 18
9 SPIN-ON COOLANT FILTER ............................................................................................................................ 18
10 RADIATOR ................................................................................................................................................ 19
10.1 MAINTENANCE............................................................................................................................................. 19
10.2 RADIATOR REMOVAL & INSTALLATION ....................................................................................................... 19
11 CHARGE AIR COOLER (CAC) LEAKAGE........................................................................................................ 23
12 COOLING FAN DRIVE MECHANISM ........................................................................................................... 23
12.1 DRIVE PULLEY AND UNIVERSAL JOINT SHAFT .............................................................................................. 23
12.2 IDLER REPLACEMENT ................................................................................................................................... 24
13 VARIABLE SPEED COOLING FAN ................................................................................................................ 25
13.1 LOCKING RADIATOR FAN CLUTCH FOR EMERGENCY OPERATION ............................................................... 25
SECTION 05a: H3 SERIES COOLING SYSTEM
PA1615 Maintenance Manual All Series | Section 05a revised September 2016
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