Alternator Removal And Replacement - Graco WB3000 Instructions - Parts Manual

Alternator Removal and Replacement

NOTE: Replace alternator bearings after 2000 hours
of operation. Order Part No. 24N706 Bearing Kit.
Parts included in the kit are marked with a symbol (♦).
1. See Prepare the Gun for Service, page
2. Remove the power supply/alternator assembly
and disconnect the alternator. See
Removal and Replacement, page
3. Measure resistance between the two outer
terminals of the 3-wire connector (PC); it should
be 2.0–6.0 ohms. If outside this range, replace
the alternator coil (15a).
4. Using a flat blade screwdriver, pry the clip (15h)
off the housing (15d). Remove the cap (15f),
using a thin blade or screwdriver.
5. If necessary, rotate the fan (15e) so its blades
clear the four bearing tabs (T) of the housing
(15d).
Figure 34 Fan Orientation
3A2497C
47.
Power Supply
52.
6. Push the fan and coil assembly (15a) out the
front of the housing (15d).
Figure 35 Alternator Cross-Section
Do not scratch or damage the magnet (M) or
shaft (S). Do not pinch or damage the 3–wire
connector (PC) when disassembling and
reassembling the bearings.
7. Hold the coil assembly (15a) on a workbench
with the fan end facing up. Using a wide blade
screwdriver, pry the fan (15e) off the shaft (S).
8. Remove the top bearing (15b2).
9. Remove the bottom bearing (15b1).
10. Install the new bottom bearing (15b1♦) on the
long end of the shaft (S). The flatter side of the
bearing must face away from the magnet (M).
Install in the coil (15a) so the bearing blades are
flush with the surface of the coil.
11. Press the new top bearing (15b2♦) onto the short
end of the shaft so the bearing blades are flush
with the surface of the coil (15a). The flatter side
of the bearing must face away from the coil.
Repair
NOTICE
53