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Technical Product Manual
Fault analysis and repairs 1318
2 Removing and fitting housing cover
Section 2: Removing and fitting housing cover • Edition 12/2005
TU00-1318-0200302 © Siemens VDO Trading GmbH Section 2 2–27
2.8.6 Checking integral potentiometer
Fig. 2-22 Checking potentiometer
Procedure
Connect a measuring device between wires (1) and (3).
Determine the resistance value.
Connect the measuring device to wires (2) and (3).
Turn the spur gear (4) slowly and steadily to determine the resistance value.
1 Wire wt 7 Wire bk
2 Wire wtr 8 Motor pinion
3 Wire pink 9 Collar
4 Spur gear 10 Motor
5 n frame 11 Filister head screws
6 Wire red
8
5
9
10
4
11
3
p2
wt-
1
wt
6
r
7
bk
Note
Defective n frame:
Resistance value changes abruptly when turning the spur gear (4).
Action to be taken:
Replace the n frame (5) and integral unit.
Remark
• Depending on the direction of rotation of the spur gear (4)
, the resistance value must increase or decrease steadily (about 170 Ω...5
KΩ).
• The measured value on the wires must not exceed 5 KΩ ± 10%
.
- Fault analysis and repairs 1
- NEC Tachographs/ 1
- EC Tachographs 1318 1
- Table of contents 3
- Section 8 Lubrication charts 10
- List of illustrations 11
- Section 1 General notes 17
- 1 Contents 18
- 1 General notes 19
- 1.1 History - 1318 19
- 1.2 Preparing repairs 19
- 1.3 Repair hints 20
- 1.4 Workbench setup 21
- 2 Contents and assignment 24
- 2.2 Type plaque labelling 30
- 2.3 Removing front parts 31
- 2.3.2 Replacing dial glass 32
- 2.3.3 Lock cylinder 33
- 2.5.1 Speed indicator 36
- 2.5.2 RPM indicator 36
- 2.5.3 Clock hands 37
- 2.7 Flat cable 42
- 2.7.2 Fitting flat cable 43
- 2.8 n measuring system 46
- 2.8.7 Checking DC motor 50
- 2.9 Quartz mechanism 52
- 2.9.3 Replacing gears 53
- 2.9.5 Speed shaft 57
- 2.10 Cover contact 58
- 2.10.2 Checking cover contact 59
- 2.11.3 Fitting n stylus lever 62
- 2.12.2 Making auxiliary bezel 68
- 0.2 70
- 2.12.6 Fitting clock hands 71
- 2.12.8 Fitting bezel 72
- 2.13.1 Removing cover plate 73
- 2.13.2 Pulling out knobs 74
- 2.14 Distance recorder 75
- 2.15.1 Fitting knobs 78
- 2.15.1.2 Inserting knobs 79
- 2.15.2 Cover plate versions 80
- Section 2 2–59 81
- Cover plate Device type 81
- 2.15.3 Fitting cover plate 82
- 2.16.1 Fitting stylus guide 83
- 2.17.3 Separating plate 87
- 2.18.1 Replacing cover 88
- 10.85 mm (before 11.5 89
- 2.18.3 Replacing cover strap 90
- 3 Contents and assignment 94
- Removing and fitting housing 100
- 3.1 Housing – overall view 101
- 3.2 Removing hood 102
- 3.2.3 Removing fixing cap 103
- 3.2.4 Removing hood 103
- 3.3 Removing socket housing 104
- 3.5 v/ n board identification 106
- 3.6 v board 107
- 1318.71.400.03 110
- 1318.71.400.11 112
- 1318.71.400.12 112
- 318.71.800.10 113
- 3.7 n board 114
- 1318.0210.103.xxx 115
- /1318.71.300.xx 115
- 1318.71.300.xx 115
- 1318.71.900.10 116
- Technical Product Manual 117
- 3.8 Removing frame 118
- 3.8.3 Removing stylus unit 120
- *discontinued 122
- 3.8.5.1 Removing gears 125
- 3.8.5.2 Installing gears 126
- 3.9.1 Removing drive parts 129
- 3.9.2 Fitting stylus holder 129
- 3.10 Speed measuring system 134
- 3.10.3.1 Checking motor 137
- 3.10.4.1 Pull contacts 138
- 3.10.4.2 Fitting contacts 138
- 3.10.5 Speed measuring system 139
- 3.11 Distance/ WT motor 140
- Back until 09.87 141
- Front until 09.87 141
- 0.15 mm thick 145
- 3.14 Fitting frame plate 149
- Tension spring (12) on front 151
- 3.15.1 Replacing grip head 154
- 3.16.1 Fitting the frame 155
- 3.16.1.2 Installing frame 156
- 3.16.4 Fitting n board 158
- 3.16.5 Fitting v board 159
- Back of frame plate 160
- Driver 1 160
- Driver 2 160
- 3.16.7 fixing v and n boards 162
- 6 ± 0.25 164
- 3.17 Data output – data block 168
- Section 4 Checking and 169
- 4 Contents and assignment 170
- (from 01.02) 171
- 4.2.1 Checking speed stylus 172
- 1318-02, -04, -06 177
- 1 1900.1501.054.030 179
- 1 1900.1501.054.090 181
- Checking and adjusting 184
- 1 1900.1501.064.000 186
- 4.10 Function check 192
- Section 5 Sealing points 193
- 5 Contents and assignment 194
- 5.3 Fixing cap versions 196
- 5.4.1 Embossing seals 197
- 5.4.2 Fitting seal caps 198
- 5.4.3 Fitting bezel seal 198
- Sealing points 200
- Additional equipment 201
- 6 Contents and assignment 202
- 6.1.1 Recording widths 205
- 6.1.2 Repair hint 205
- 6 Additional equipment 208
- A1 (+) / A5 (-) 210
- 6.3.6 Checking stop signal 211
- 6.4.1 Function 212
- Level 1: Level 2 212
- 6.4.2 Control 213
- 6.4.4 Checking recording 214
- Section 6 6–15 215
- 1 Straight pin 2 Bearing 215
- 1 day unit: x = 24.5 mm 216
- 7-day unit: x = 28.5 mm 216
- 6.4.6 Clock generator 2154.02 217
- 6.4.6.2 Wiring diagram 218
- Section 6 6–19 219
- 12 V and 24 V 220
- RPM display 221
- 6.5.1 Adjusting 222
- 6.5.2 RPM constant label 222
- (connector D5) 223
- Section 7 Wiring diagrams 229
- 7.2 Colour codes 231
- EC and CH 242
- Bridge for checking only 244
- Bridge Bridge 244
- Lubrication charts 248
- 8 Lubrication charts 250
- 8.2 Distance counter 251
- 8.5 Frame: v measuring system 252
- Section 8 8–7 253
- Fig. 8-5 Front of frame 253
- Do not lubricate! 254
- 8.8 Frame: Driver 2 lever 255
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