
4F80W
Contents
12 SCREED������������������������������������������������������������������������������������������������������������������������������������������������115
12.1 Dismounting the screed lifting cylinder ................................................................................................................................................ 116
12.2 Replacement of linear hydraulic motors for screed extension...................................................................................................... 118
12.3 Basic setting of the screed .......................................................................................................................................................................... 120
12.4 Replacement of the friction plates........................................................................................................................................................... 123
12.4.1 Front frame....................................................................................................................................................................................................... 124
12.4.2 Rear frames....................................................................................................................................................................................................... 127
13 SCREED GAS HEATING�����������������������������������������������������������������������������������������������������������������������131
13.1 Gas system diagram...................................................................................................................................................................................... 132
13.2 Ignition process............................................................................................................................................................................................... 133
13.3 Diagnostics....................................................................................................................................................................................................... 135
13.3.1 Gas equipment tightness check .............................................................................................................................................................. 135
13.4 Reducing valve................................................................................................................................................................................................ 137
13.5 Gas hoses........................................................................................................................................................................................................... 137
13.6 Gas manifold.................................................................................................................................................................................................... 137
13.6.1 Gas manifold replacement.......................................................................................................................................................................... 137
13.7 Screed heating burner.................................................................................................................................................................................. 139
13.7.1 Screed heating burner replacement....................................................................................................................................................... 139
13.7.2 Cleaning the gas burner nozzle ................................................................................................................................................................ 140
13.7.3 Gas ame adjustment................................................................................................................................................................................... 142
13.7.4 Test of burner ignition.................................................................................................................................................................................. 143
13.8 Gas supply solenoid valves......................................................................................................................................................................... 145
13.8.1 Valve cleanliness inspection ...................................................................................................................................................................... 145
13.8.2 Measuring resistance of the coils of gas supply valve electromagnets...................................................................................... 146
13.8.3 Measuring power supply of the coils of gas supply valve electromagnets .............................................................................. 147
13.9 Ignition units.................................................................................................................................................................................................... 148
13.9.1 Measuring resistance on the ignition unit............................................................................................................................................ 148
13.9.2 Voltage measurement on the cable harness of ignition units....................................................................................................... 149
13.10 High-voltage cables....................................................................................................................................................................................... 150
13.11 Spark plugs....................................................................................................................................................................................................... 150
13.11.1 Spark plug function test ............................................................................................................................................................................. 150
13.11.2 Spark plug check procedure ...................................................................................................................................................................... 151
13.12 Temperature sensor....................................................................................................................................................................................... 152
14 BELT CONVEYORS AND AUGERS ������������������������������������������������������������������������������������������������������153
14.1 Replacement of the hydraulic motor for driving the augers and the belt conveyor............................................................. 154
14.2 Dismounting the belt conveyor chain.................................................................................................................................................... 157
14.3 Mounting the belt conveyor chain .......................................................................................................................................................... 161
14.4 Setting the belt conveyor chain sag........................................................................................................................................................ 165
14.5 Dismounting the belt conveyor chain drive......................................................................................................................................... 167
14.6 Dismounting the auger chain.................................................................................................................................................................... 170
14.7 Replacement of the drive switch of augers and belt conveyor..................................................................................................... 173
14.7.1 Measuring the belt conveyor drive switch S7...................................................................................................................................... 174
14.8 Dismounting the driving gear wheel of augers.................................................................................................................................. 175
14.9 Replacement of consumables ................................................................................................................................................................... 176
14.9.1 Belt conveyor chain guide plate ............................................................................................................................................................... 176
14.9.2 Cover plates...................................................................................................................................................................................................... 182