6.12.5.1 Assisted brake master cylinders: ............................6-210
6.12.5.2 High-pressure braking ....................................6-214
6.12.5.3 Pedals ...............................................6-216
6.12.6 Service tools .................................................6-217
6.12.6.1 General ..............................................6-217
6.12.6.2 Tractor braking - Service tools ..............................6-217
6.13 GPA20/Hitch/Linkage ...........................................6-218
6.13.1 Linkage - General ..............................................6-218
6.13.2 Hitch - General ...............................................6-218
6.13.3 Layout of components ..........................................6-219
6.13.3.1 View of the assembly ....................................6-219
6.13.3.2 Blown-up view .........................................6-221
6.13.4 Adjustments, bleeding and calibrations ..............................6-223
6.13.4.1 Adjusting the angular position sensor .........................6-223
6.13.5 Disassembly/reassembly ........................................6-224
6.13.5.1 Removing the linkage cover plate ...........................6-224
6.13.5.2 Disassembling the linkage cover plate ........................6-227
6.13.5.3 Reassembling the linkage cover plate .........................6-228
6.13.5.4 Shimming the linkage shaft ................................6-230
6.13.5.5 Refitting the linkage cover plate .............................6-230
6.13.5.6 Disassembling and reassembling a lift ram .....................6-231
6.14 GPA20+/Hitch/Increased capacity linkage - General ...............6-233
6.14.1 Linkage - General ..............................................6-233
6.14.2 Hitch - General ...............................................6-234
6.14.3 Layout of components ..........................................6-235
6.14.3.1 View of the assembly ....................................6-235
6.14.3.2 Blown-up view .........................................6-237
6.14.4 Adjustments, bleeding and calibrations ..............................6-239
6.14.4.1 Adjusting the angular position sensor .........................6-239
6.14.4.2 Adjusting the forward speed sensor ..........................6-243
6.14.5 Disassembly/reassembly ........................................6-244
6.14.5.1 Removing and refitting the increased capacity linkage cover plate ....6-244
6.14.5.2 Removing and refitting the increased capacity linkage cover plate ....6-248
6.14.5.3 Shimming the linkage shaft ................................6-256
6.14.5.4 Disassembling and reassembling a lift ram .....................6-258
6.14.6 Service tools .................................................6-260
6.14.6.1 General ..............................................6-260
6.14.6.2 GPA20 +/Hitch/Increased capacity linkage - Service tools ..........6-260
6.15 Pneumatic trailer braking ........................................6-261
6.15.1 General .....................................................6-261
6.15.1.1 GPA20/20+ ............................................6-261
6.15.1.2 GPA40 and HA140/180 ...................................6-265
6.15.2 Layout of components ..........................................6-271
6.15.3 Test and diagnostics ...........................................6-272
6.15.3.1 Pneumatic system test ...................................6-272
6.15.3.2 Sealing test on the pneumatic system. ........................6-274
6.15.4 Adjustments, bleeding and calibrations ..............................6-274
6.15.4.1 Adjusting the pressure relief valve ...........................6-274
6.15.4.2 Adjusting the hand brake rod ...............................6-276
6.15.5 Disassembly/reassembly ........................................6-277
6.15.5.1 General ..............................................6-277
6.15.5.2 Compressor ...........................................6-277
6.15.6 Service tools .................................................6-279
6.15.6.1 General ..............................................6-279
6.15.6.2 Pneumatic trailer brake — Service tools .......................6-279
6.16 Auto-hitch ......................................................6-282
6.16.1 General .....................................................6-282
Table of contents
MF 6700 S series tractors
ACT0025630
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