1987 MAZDA 626 window

15 REAR WINDOW WIPER
76G15X-062
76G15X063
15-74

REAR WINDOW WIPER 1 5
86U15X-132
INSPECTION
Operation Check of Rear Wiper Motor
1. Check that the motor operates continuously when
12V is connected to the (a) terminal and ground
is connected to the (b) terminal of the motor.
2. Start the motor again.
Disconnect the ground from the (b) terminal, and
then connect the ground to the motor body im-
mediately. Check that the motor shaft reaches the
auto-stop position, and that there is conductivity
through the grounding of the motor body.
Note:
Be sure to re-install the rubber seal correctly.
Operation Check of Rear Washer Motor
1. Using a voltmeter, measure the voltage between
the (b) terminal and a body ground with the igni-
tion switch ON.
2. If no voltage, check the fuse or repair the harness.
3. If the (b) terminal voltage is 12 V, connect the (a)
terminal to a body ground.
4. If the washer motor does not operate, replace the
washer motor.
76G15X-094
15-75

16 OUTLINE
Thermometer (Dry)
Thermometer
(Dry & Wet)
76G16X-633
69G16X-024
DETERMINING THE RELATIVE HUMI-DITY: Read the temperatures of the dry- and v^et-bulb thermometers at the air inlet (evapo-rator inlet). Then bring them into mutual relation on the chart and determine the intersection, which is the relative humidity^ For exampie, if the dry-bulb temperature^ is 90° F. and the wet-bulb temper- ^ ature is 78° F, the relative humidity is ^ 60%.
DRV BUL8 TEMPERATURE
Performance Test
After finishing repairs, be sure to conduct a perfor-
mance test of the air conditioning system as follows.
Procedure
1. Connect the manifold gauge set. (Refer to page
16-8)
2. Run the engine and keep the engine speed at
1750 rpm.
3. Operate the air conditioner at MAX COOLING.
4. Open all windows and doors.
5. Insert a dry-bulb thermometer in the center of the
ventilator outlet.
6. Place a dry and wet thermometer close to the in-
let of the blower inlet.
7. The high pressure should be within 1374—1569
kPa (14.0—16.0 kg/cm2, 200—227 psi).
Note:
If the pressure is too high, pour water on the
condenser; if it is too low, cover the front sur-
face of the condenser.
8. The dry-bulb thermometer at the inlet should be
within 25—35°C (77—95°F).
Operate the air conditioning system in this condi-
tion until the conditions of the high and low pres-
sure gauges and thermometers are stabilized.
Reading the standard performance curve
1. Read the inlet temperature an get the relative hu-
midity from the psychrometric chart.
2. Read the cool air temperature at the air outlet.
3. Determine the difference between the inlet and out-
let dry-bulb temperature.
4. For example, when the difference is 17°C (30.6°F)
and the relative humidity is 60%:

If
the closing point is the upper part of the line, cool-
ing performance is satisfactory.
76G16X-634
READING THE GRAPH: After reading the temperatures of the wet-and dry-bulb thermometers at the evapo-rator air inlet, the relative humidity (%} can be determined Example: If the dry- and wet-bulb temperatures at the evaporator air inlet are 25°
C
and 19 5°C respectively, find the point of intersection of the dotted lines in the graph, which is

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16—12

40 SPECIAL TOOLS
CHECKER AND OTHER
TOOL NUMBER & DESCRIPTION

49 F018 001
Checker lamp
49 9200
163

Adapter
harness
49 G018 902
Injector
checker
49 0187 280
Oil pressure gauge
49 0305 870A
Tool set,
window
49 0839 285
Checker, fuel
and
thermometer
49 9200
020

V-ribbed belt tension gauge
49 0242 685A
Switch starter

PRIORITY ILLUSTRATION TOOL NUMBER & DESCRIPTION

49 9200
162

Monitor, engine signal
49 U018 003
Adapter harness
49 G018 901
Adapter
harness
49 9200 010
ACC checker
49 H018 9A1
Self-diagnosis
checker
49 9200 750A
Multi-pressure
tester
49 G018 001
Adapter harness

PRIORITY ILLUSTRATION
40—10 expert22 /yia http://rutracker.org