Opel 1900 1973 Service Manual page 36

2. Unscrew the four (4) pole shoe attaching bolts and
take field coils out of field frame. See Figure lB-9.
3. To ensure proper installation of the pole shoes,
align shoes exactly parallel with the armature shaft
prior to tightening attaching bolts.
Checking a'nd Replacing Brushes
1. Check b&h positive brush holders for ground. See
Figure lB-,lO. Test lamp must not light up.
Figure 1 g-10 Checking Positive Brush Holder for
Grounds
Figure 1B-11 Removing Rivet
STARTING
2. Check brushes. Replace brushes, if worn down to
brushes.
3. To replace positive brushes, cut off wires at the
connecting strap of the field coil. Clean soldered joint
and solder stranded wire of new brushes. Hold wire
with flatnose pliers so that no tin enters wire strands.
4. On replacement of the negative brushes, the com-
plete brush holder with the welded brush has to be
replaced.
5. Shear off rivet head with a chisel and drive rivet
out. See Figure lB-11.
6. A tool to replace the negative brush holder and
rivet can be made up out of l/4 inch steel. See Figure
Figure 18.12 Negative Brush Holder Installation Tool
7. Place new brush holder and new rivet on installa-
tion tool and insert rivet into bore of field frame. See
Figure lB-13.
Figure 18-13 Brush Holder and Rivet Installed on Tool
SYSTEM