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Repair
Alternator Removal and Replacement
NOTE: Replace
alternator bearings after 2000 hours
of operation.
Order Part No. 24N706 Bearing Kit.
Parts include
dinthekitaremarkedwithasymbol(♦).
1. See Prepare the Gun for Service, page 39.
2. Remove the power supply/alternator assembly
and disconnect the alternator. See Power Supply
Removal and Replacement, page 45.
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
6. Push the fan and coil assembly (15a) out the
front of the housing (15d).
Figure 35
Alternator Cross-Section
NOTICE
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 th
e coil assembly (15a) on a workbench
with th
efanendfacingup.Usingawideblade
screwd
river, pry the fan (15e) off the shaft (S).
8. Remov
e the top bearing (15b2).
9. Remov
e the bottom bearing (15b1).
10. Insta
ll the new bottom bearing (15b1♦) on the
long e
nd of the shaft (S). The flatter side of the
beari
ng must face away from the magnet (M).
Inst
all in the coil (15a) so the bearing blades are
flush
with the surface of the coil.
11. Pres
s the new top bearing (15b2♦) onto the short
end o
f the shaft so the bearing blades are flush
with
the surface of the coil (15a). The flatter side
of t
he bearing must face away from the coil.
46 3A2495C