### Windshield Wiper Motor

#### REMOVAL AND INSTALLATION

The wiper motor is on the firewall under the hood. The operating linkage is located under the cowl panel.

##### Front Wiper Motor

1. Disconnect the negative battery cable.
2. Disconnect the wiper motor electrical connection.
3. Make a chalk mark on the windshield on each side to mark the wiper blade position.
4. Lift the wiper arms. Remove the securing nuts and detach the arms.
5. Remove the cowl cover or air intake grille.
6. Remove the bolts securing the wiper motor to the bulkhead.
7. Turn the wiper motor so that the wiper motor link comes through the oblong hole in the cowl top panel. Disconnect the ball joint which connects the motor link and wiper link by pulling the wiper motor straight out.
8. Remove the nuts holding the wiper pivots to the body.
9. Remove the wiper linkage and pivots as an assembly through the oblong hole in the cowl top panel.

   To install:

10. Install the wiper linkage and pivots through the oblong hole in the cowl top panel.
11. Apply some white lithium grease to the wiper link ball joint. Press the wiper motor link ball joint into the fitting on the wiper arm linkage.
12. Attach the wiper pivots to the body. Tighten the pivot mounting nuts to 3–9 ft. lbs. (4–12 Nm).
13. Install the wiper motor mounting bolts. Tighten the wiper motor mounting bolts to 3–9 ft. lbs. (4–12 Nm).
14. Install the cowl cover panel or air intake grill.
15. To reduce wiper arm looseness, prior to connecting the wiper arm, make sure the motor spline shaft and pivot area is completely free of debris and corrosion. Wire brush as necessary.
16. When installing the wiper arms, make sure the blades align with the chalk marks made during disassembly before attaching the wiper arm to the pivot. Install the wiper arms and tighten the mounting nuts to 9–17 ft. lbs. (13–23 Nm).
17. The distance from the bottom of the windshield glass to the middle of the wiper blades in the rest position should be as follows:
    1. 240SX — 0.689–1.280 in. (17.5–32.5 mm)
    2. Altima — 1.06–1.61 in. (27–41 mm)
    3. Maxima — 0.20–0.79 in. (5–20 mm)

       Fig. 1: Adjusting the front windshield wiper blade clearance — Altima and 240SX

18. Connect the wiper motor electrical connection and negative battery cable.
19. Verify that the wipers operate correctly.
20. Clean chalk marks from the windshield.

##### Rear Wiper Motor

1. Disconnect the negative battery cable.
2. Lift up the cover and remove the nut attaching the rear wiper arm to the pivot. Remove the rear wiper arm.
3. Open the rear hatch and remove the door trim panel.
4. Disconnect the wiper motor electrical connection.
5. Remove the wiper motor mounting bolts.
6. Remove the rear wiper motor.

   To install:

7. Install the wiper motor and its mounting bolts. Tighten the mounting bolts to 3–4 ft. lbs. (4–5 Nm).
8. Connect the wiper motor electrical connection.
9. Install the rear door trim panel.
10. Install the wiper arm. The distance between the edge of the wiper blade in the rest position and the edge of the black print on the rear glass should be:
    1. Altima and 240SX — 0.98–1.38 in. (25–35 mm)
    2. Maxima — 1.18–1.97 in. (30–50 mm)
11. Tighten the wiper blade mounting nut to 9–13 ft. lbs. (13–18 Nm).
12. Verify that the wipers operate correctly.