Volkswagen Golf/Jetta 2 manual

Distributor - overhaul
Ignition system - transistorised type / Distributor - overhaul


Note: Before commencing work, check that spare parts are available.

1.05 and 1.3 litre engines with hydraulic tappets
1 Distributor overhaul for these engine types is as described in paragraphs 2 to 14 but with reference to the accompanying illustration (see illustration) and the following:

7.1 Transistorised ignition distributor components Ц 1.05 and 1.3 litre
7.1 Transistorised ignition distributor components Ц 1.05 and 1.3 litre engines

1 Bearing plate
2 Tensioning ring
3 Circlip
4 Pin
5 Rotor
6 Cover
7 Shims
8 Hall sender
9 Clip
10 Connector
11 Main body

a) The distributor shaft is supported by a bearing plate which is removed by loosening the two screws securing it to the tensioning ring. Before removing the ring make a mark on the rim of the distributor body in line with the guide lug.

b) Shims are provided above and below the Hall sender and these should be selected to eliminate axial clearance and to provide for movement by the vacuum unit.

All other engines
2 Wipe clean the exterior of the distributor.

3 Pull the rotor arm from the driveshaft then lift off the dust cover. Do not allow the cap retaining clips to touch the rotor during subsequent operations (see illustrations).

7.3a Pull free the rotor . . .
7.3a Pull free the rotor . . .

7.3b . . . and lift off the dust cap
7.3b . . . and lift off the dust cap

4 Prise out the locking ring and withdraw the rotor up the shaft. Collect the locating pin (see illustrations).

7.4a Remove the locking ring and rotor . . .
7.4a Remove the locking ring and rotor . . .

7.4b . . . and locating pin from shaft groove (arrowed)
7.4b . . . and locating pin from shaft groove (arrowed)

5 Undo the retaining screws securing the vacuum unit. Remove the vacuum unit, disengaging its operating arm (see illustration).

7.5 Vacuum unit removal
7.5 Vacuum unit removal

6 Remove the locking ring and collect the washers from the shaft.

7 Undo the cap clip and baseplate retaining screws from the body and lift out the Hall sender unit and the baseplate (see illustration).

7.7 Hall sender unit, retaining ring and washers
7.7 Hall sender unit, retaining ring and washers

8 Clean all the components and examine them for wear and damage.

9 Inspect the inside of the distributor cap for signs of burning or tracking. Make sure that the small carbon brush in the centre of the distributor cap is in good condition and can move up and down freely under the influence of its spring.

10 Check that the rotor arm is not damaged.

Use an ohmmeter to measure the resistance between the brass contact in the centre of the rotor arm and the brass contact at the edge of the arm. The measured value of resistance should be between 600 and 1400 ohm.

11 Suck on the pipe connection to the vacuum diaphragm and check that the operating rod of the diaphragm unit moves.

Retain the diaphragm under vacuum to check that the diaphragm is not perforated.

12 Reassemble the distributor in reverse order of dismantling. Smear a little grease on the bearing surface of the baseplate and the Hall sender bearing surfaces.

13 Before fitting the rotor (trigger wheel) back over the shaft, locate the small engagement pin in the groove in the shaft. Smear the pin with grease to retain it in position. Align the indent in the rotor inner bore with the groove in the shaft and slide it down into position over the pin (see illustration) .

7.13 Align rotor indent with groove in shaft when refitting
7.13 Align rotor indent with groove in shaft when refitting

14 On completion, rotate the distributor shaft by hand to ensure that it moves freely. If it does not, then the rotor is possibly distorted and will need renewal.


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