Graco 3A2495C User Manual

Repair

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

2. Remove the power supply/alternator assembly

and disconnect the alternator. See

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 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.

3A2495C