Delco-Remy type generator (pic. 12.3)
Pic. 12.3. Delco-Remy type current generator:
1 - pulley nut; 2 - pulley; 3 - fan; 4 - casing of the drive shaft; 5 - bearing; 6 - bearing support; 7 - rotor; 8 - through bolt; 9 - casing of contact gauges; 10 - brush holder / voltage stabilizer. 11 - block of diodes; 12 - stator
The brush holder and voltage regulator are combined in one unit. To access the assembly, the generator must be partially disassembled, as indicated below. If the voltage regulator is defective, the entire assembly must be replaced.
Remove the alternator as above.
Draw a line across the drive shaft end housing and slip ring end housing to ensure proper alignment during assembly.
Remove the three through bolts and separate the shaft housing from the slip ring housing and stator.
Check the condition of the slip rings and. if necessary, remove the dirt with a rag or very fine glass wool.
After removing the three nuts and washers securing the stator wires, remove the stator assembly (pic. 12.5).
Remove the screw and remove the diode block.
After removing the two screws securing the brush holder and voltage regulator to the contact track housing, remove the brush holder assembly.
Check that the brushes move freely in their guides and that the length of the brushes is within the limits specified in the specifications.
To install new brushes, unsolder the ends of the holder connections and solder new wires.
Check that the new brushes move freely in the guides.
Before installing the brush holder assembly, move the brushes aside with a suitable tool.
Install the diode block and stator assembly.
Install the generator as outlined in the previous section.
Bosch type current generator (pic. 12.4)
Pic. 12.4. Bosch type current generator:
1 - pulley nut; 2 - pulley; 3 - fan; 4 - casing of the drive shaft; 5 - bearing; 6 - bearing support; 7 - through screws; 8 - brush holder / voltage stabilizer; 9 - casing of contact gauges; 10 - stator cover; 11 - stator; 12 - bearing; 13 - rotor
The brush holder and voltage stabilizer are combined in one unit, which is bolted to the end of the generator. If the voltage regulator is faulty, the entire assembly must be replaced.
Disconnect air lines from air cleaner and air box or throttle body and where required to provide adequate access.
Disconnect the negative battery terminal.
Remove two screws and take out the brush holder/voltage regulator assembly (pic. 12.6).
Make sure that the brushes move freely in the guides and that the length of the brushes is within the limits indicated by the technical specifications (pic. 12.7).
If there is any doubt about the condition of the brushes, it is best to replace them as indicated below.
Clamp the brush wire with pliers and unsolder it. Take out the brush. Do the same with other brushes.
After installing new springs on the brush holder, insert new brushes and make sure that they move freely in the guides. If they stick, lightly polish them with a velvet file or fine glass sandpaper.
Solder the ends of the brush wires to the brush holder.
Check the condition of the slip rings and, if necessary, remove dirt from them with a rag or very thin glass skin.
Install the brush holder/voltage regulator assembly and tighten the screws.
Install the generator as above.
Connect the negative battery terminal.
Install air ducts.
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