Impreza 2.5 RS Coupe AWD F4-2.5L SOHC (2001)
2. Checking brush spring for proper pressure Using a spring pressure indicator, push the brush into the brush holder until its tip protrudes 2 mm
(0.08 in). Then measure the pressure of the brush spring. If the pressure is less than 2.648 N (270 g, 9.52 oz), replace the brush spring with a
new one. The new spring must have a pressure of 4.609 to 5.786 N (470 to 590 g, 16.58 to 20.81 oz).
4. DIODE ASSEMBLY
CAUTION: Never use a megger tester measuring use for high voltage or any other similar measure for this test; otherwise, the diodes may be
damaged.
1. Checking positive diode
Check for continuity between the diode lead and the positive side heat sink. The positive diode is in good condition if continuity exists only in
the direction from the diode lead to the heat sink.
2. Checking negative diode
Check for continuity between the negative side heat sink and diode lead. The negative diode is in good condition if continuity exists only in
the direction from the heat sink to the diode lead.
5. BEARING FRONT SIDE.
1. Check front ball bearing. If resistance is felt while rotating, or if abnormal noise is heard, replace the ball bearing.