What is the correct wiper blade park clearance "C"?

Clearance "C" is 15 - 25 mm (0.59 - 0.98 in), measured at the lower windshield molding.

What is the torque spec for the front windshield wiper arm nuts?

Tighten the windshield wiper arm nuts to 13 - 18 N·m (1.3 - 1.8 kg-m, 9 - 13 ft-lb).

How do I test the intermittent wiper amplifier?

Connect test lead wires per diagram SEL406G. The lamp should come on when switch I is connected to "b" and go out in a short time; when connected to "a" and then "b", the lamp should go out in approximately 7 seconds.

How is the washer circuit of the intermittent wiper amplifier checked?

Connect test lead wires per diagram SEL135E. The lamp should come on when switch II is turned ON and go out approximately 3 seconds after switch II is turned OFF.

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Nissan Wiper & Washer Adjustment, Intermittent Amplifier Check (EL-53)

Nissan front and rear wiper washer adjustment and torque specs EL-53

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Windshield wiper and washer service page: wiper blade stop clearance C 15-25 mm, arm-nut torque 13-18 Nm, washer nozzle spray dimensions, and intermittent wiper amplifier circuit checks.

AI caption February 2006 · Photo 399 of 412

This is page EL-53 of a Nissan service manual covering wiper and washer service procedures. The left column details front windshield wiper adjustment: setting the wiper switch to LOW then OFF (Auto Stop) before arm installation, adjusting blades within clearance "C" of 15-25 mm (0.59-0.98 in), and verifying the blades stop within that clearance. Installation requires tightening the wiper arm nuts to 13-18 N·m (1.3-1.8 kg-m, 9-13 ft-lb). A washer nozzle adjustment diagram provides spray aiming dimensions in mm (in), including 430 (16.93), 200 (7.87), 230 (9.06), 375 (14.76), 175 (6.89) and 320 (12.60). A rear wiper and washer diagram gives similar target dimensions (e.g., 240 (9.45), 350 (13.78)) and rear wiper arm torque of 5-7 N·m (0.5-0.7 kg-m, 3.6-5.1 ft-lb). The right column covers the intermittent wiper amplifier check with test-lamp diagrams (SEL406G, SEL135E): the lamp should light and extinguish when switch I is moved between terminals "a" and "b" (going out in about 7 seconds), and in the washer circuit check the lamp should light with switch II ON and go out about 3 seconds after switch II is turned OFF.

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Frequently asked questions

What is the correct wiper blade park clearance "C"?: Clearance "C" is 15 - 25 mm (0.59 - 0.98 in), measured at the lower windshield molding.
What is the torque spec for the front windshield wiper arm nuts?: Tighten the windshield wiper arm nuts to 13 - 18 N·m (1.3 - 1.8 kg-m, 9 - 13 ft-lb).
What is the rear wiper arm torque specification?: 5 - 7 N·m (0.5 - 0.7 kg-m, 3.6 - 5.1 ft-lb).
How do I test the intermittent wiper amplifier?: Connect test lead wires per diagram SEL406G. The lamp should come on when switch I is connected to "b" and go out in a short time; when connected to "a" and then "b", the lamp should go out in approximately 7 seconds.
How is the washer circuit of the intermittent wiper amplifier checked?: Connect test lead wires per diagram SEL135E. The lamp should come on when switch II is turned ON and go out approximately 3 seconds after switch II is turned OFF.