1992 MAZDA PROTEGE Workshop Manual

AIR CONDITIONER U
CONDENSER
Removal / Installation
1. Discharge the refrigeration system. (Refer to page U-32.)
2. Remove the radiator grille. (Refer to Section S.)
3. Remove the receiver/drier. (Refer to page U-52.)
4. Remove the condenser as shown in the figure.
Note
l Insert a protector such as cardboard between the condenser and the radiator.
l Immediately plug the open fittings to keep moisture out of the system.
5. install the condenser in the reverse order of removal.
Note
l Apply clean compressor oil to the O-rings before connecting the fittings.
l Do not apply compressor oil to the fitting nuts.
l Remove the protector before installing the radiator brackets.
l When installing a new condenser, add compressor oil through the high-pressure pipe port
of the compressor.
Compressor oil: 30 cc (1.83 cu in)
Tightening torque
Condenser inlet: 15-25 N*rn (1.5-2.5 m-kg, 11-18 ft-lb)
Condenser outlet: 9.8-20 N#m (1 .O-2.0 m-kg, 7.2-14 ft-lb)
1. Radiator bracket
2. Radiator 3. Condenser
23UOUX-01
Inspection
Check for the following and repair or replace the condenser
as necessary.;
1. Cracks, damage, or refrigerant leakage.
2. Bent fins.
3. Distorted or damaged condenser inlet or outlet.
u-53

AIR CONDITIONER
REFRIGERANT LINES
On-vehicle Inspection
Check for leakage at connections. (Refer to page U-32.)
Repair or replace as necessary.
Replacement
1. Discharge the refrigeration system. (Refer to page U-32.)
2. Replace the faulty pipe or hose.
Note
l Immediately plug the open fittings to keep moisture out of the system.
l Apply clean compressor oil to the O-rings before connecting the fittings.
l Do not apply compressor oil to the fitting nuts.
Tightening torque (fittings):
Location Tightening torque
0 9.8-20 N.m
(1.0-2.0 m-kg, 7.2-14 ft-lb)
0 15-25 N-m (1.5-2.5 m-kg, 11-18 ft-lb)
0 9.8-16 N.m (1.0-1.6 m-kg, 7.2-12 ft-lb)
fa 20-29 N.m
(2.0-3.0 m-ka 15-21 ft-lb)
3. Evacuate, charge, and test the refrigeration system.
1. High-pressure hose
2. Low-pressure hose
3. Cooler pipe No.1 4. Cooler pipe No.2 6. Cooler pipe No.4
5. Cooler
pipe No.3 7. Cooler pipe No.5
u-54

AIR CONDITIONER U
REFRIGERANT PRESSURE
2.0 f 0.2 kg/cm* 27 f 2 kg/cm’
4.1 f 0.5 kg/cm* 21 * 4 kg/cm*
03uoux-09
9
23UOUX-050
REFRIGERANT PRESSURE SWITCH No.1
Inspection
1. Turn the ignition switch OFF.
2. Connect the manifold gauge set and measure the high-
pressure side refrigerant pressure.
High-pressure side:
Above 451 kPa (4.6 kg/cm2, 65 psi)
3. If not as specified, check the refrigerant system, referring
to the troubleshooting information on page U-14.
4. If correct, go to the next step.
5. Disconnect the refrigerant pressure switch No.1 connector.
6. Check for continuity of the switch.
Terminals
1 Continuity
a-b
Yes I
7. If not as specified, replace the switch together with cooler
pipe No.2. (Refer to page U-54.)
Note
l If problems occur in the refrigeration system, caus-
ing abnormally high (above 2,649 SL: 196 kPa [27 f
2 kg/cm2, 384 f 28 PSI]) or low (below 196 f 20
kPa [2.0 f 0.2 kg/cm2, 28 & 2.8 psi]) pressures,
refrigerant pressure switch No.1 cuts power to the
magnetic clutch to protect the mechanical compo-
nents. If the pressure recovers to within normal
operating range (below 2,080 f 392 kPa [21 f 4
kg/cm2, 299 f 57 psi] or above 402 f. 49 kPa t4.1
f 0.5 kg/cm2, 58 f 7 psi]), the power is again re-
stored.
REFRIGERANT PRESSURE SWITCH No.2
(BP ENGINE WITH ATX)
Inspection
1. Turn the ignition switch OFF.
2. Connect the manifold gauge set and measure the high-
pressure side refrigerant pressure.
High-pressure side:
below 1,177 kPa (12 kg/cm2, 171 psi)
3. Disconnect the refrigerant pressure switch No.2 connector.
4. Check continuity of the switch.
Terminals
a-b I Continuity
No
5. If not as specified, replace the switch together with cooler
pipe No.2. (Refer to page U-54.)
6. If correct, go to next stop.
u-55

AIR CONDITIONER
23UOUX-051
23UOUX-05
23UOUX-05
U-56
Caution
l While testing refrigerant pressure switch No.2, care-
fully note the high-pressure side refrigerant pres-
sure. If the pressure increases above 1,766 kPa (18
kg/cm2, 256 psi), stop the testing. _,
7. Disconnect the condenser fan connector.
8. Run the engine at 2,000 rpm, and operate the air condi-
tioner at maximum cooling position.
9. Check that the refrigerant pressure switch turns on when
the high-pressure side refrigerant pressure increases above
1,570 f 98 kPa (16 f 1 kg/cm2, 228 f 14 psi).
IO. If not as specified, replace the switch together with cooler
pipe No.2. (Refer to page U-54.)
A/C RELAY
Inspection
1. Disconnect the A/C relay connector.
2. Check continuity between terminals of the switch.
Terminals
Tester probe: + 1 Tester probe: -
a b Continuity
Yes
3. If not as specified, replace the relay.
4. If correct, go to the next step.
5. Apply battery voltage to terminal d and ground terminal a.
6. Check for continuity between terminals a and d.
Terminals
a-d Continuity
Yes
7. If not as specified, replace the relay.
CONDENSER FAN RELAY
Inspection
1. Disconnect the condenser fan relay connector.
2. Check continuity between terminals of the relay.
Terminals Continuity
I a-b Yes I
2
I c-d I No I
A 3. If not as specified, replace the relay.
4. If correct, go to the next step.
5. Apply battery voltage to terminal a and ground terminal b.
6. Check for continuity between terminals c and d.
Terminals Continuity
c-d Yes
7. If not as specified, replace the relay.

AIR CONDITIONER U
CONDENSER FAN
Removal / Installation
1. Remove the radiator grille. (Refer to Section S.)
2. Disconnect the condenser fan connector.
3. Remove the bolts and remove the condenser fan.
4. Install in the reverse order of removal.
I 03uoux-106
I
23UOUX-05
I
r 23UOUX-OE
a
19
Inspection
1. Disconnect the condenser fan connector.
2. Apply battery voltage to terminal a and ground terminal b,
and verify that the condenser fan operates.
3. If not as specified, replace the condenser fan.
A/C SWITCH
Inspection
1. Remove the A/C switch and check continuity between ter-
minals.
0-O: Indicates continuity
G-k0 Indicates diode
2. If not as specified, replace the A/C switch.
u-57

TD
TECHNICAL DATA
MEASUREMENTS .................................... TD- 2
ENGINE (B6 AND BP SOHC)
ENGINE (BP DOHC) ... .................................................. ;;- f
LUBRICATION SYSTEM ........................... TDI 6
COOLING SYSTEM .................................. TD- 6
FUEL AND EMISSION CONTROL
SYSTEMS ............................................. TD- 9
ENGINE ELECTRICAL SYSTEM ................ TD-10
CLUTCH ................................................. TD-11
MANUAL TRANSAXLE (F5M-R) ................ TD-12
MANUAL TRANSAXLE (GSM-R) ................ TD-13
AUTOMATIC TRANSAXLE ....................... TD-14
FRONT AND REAR AXLES.. .....................
STEERING SYSTEM ................................ ;;-;;
-
BRAKING SYSTEM .................................. TD-16
WHEELS AND TIRES ............................... TD-19
SUSPENSION ......................................... TD-19
BODY ELECTRICAL SYSTEM ................... TD-20
HEATER AND AIR CONDITIONER
SYSTEMS ............................................. TD-21
STANDARD BOLT AND NUT TIGHTENING
TORQUE .............................................. TD-21
23UTDX-001

TD TECHNICAL DATA
MEASUREMENTS
I ._.____2_ nem
Overall length
Overall width
Overall height
Wheel base
Front tread
Rear tread Body ) mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in) PRfWFr.f! . . ..s .-VW Hatchback 4,355 (171.5) 4,155 (163.6)
1,675 (65.9) 1,670 (65.7)
1,375 (54.1) 1,380 (54.3)
2,500 (98.4) 2,450 (96.5)
1,430 (56.3)
1,435 (56.5)
Bl. ENGINE (B6 AND BP SOHC)
1 Type
1 Cylinder arrangement and number Engine
86 SOHC BP SOHC
^ . . _
,?
I
uasollne, 4-cyw
. . *. 4
in-line 4-cyrinaer
Pentroof
1
I Combustion chamber I Multispherical
J Valve system OHC, belt-driven OHC, belt-driven 16 valves
. , I (3.07 x 3.29) 83.0 x 85.0 (3.27 x 3.35)
Total piston displacement cc (cu in) 1,597 (97.4) 1,839 (112.2)
Compression ratio 9.3 8.9
) Standard 1,236 (12.6, 179)-300 1,197 (12.2, 173)300
I
863 (8.8, 125)-300 834 (8.5, 121)300 1 Bore x Stroke
mm (in) I 78.0 x 83.6
Compression pressure
kPa (kg/cm’, psi)-rpm
E cvlinders 1 Maximum difference
196 (2.0, 28)
I
, ------- ---- -J - IN Open BTDC 14O 2O
Close ABDC 50°
Valve timing
Open BBDC 52O 55O
EX
Close ATDC 12O 8O
IN 0 Maintenance-free I \/AIo &-in --
Valve clearance EX 0 Maintenance-free
(Warm engine) mm (in) / ,,syi: 1
IN 0 Maintenance-free
I , EX 0 Maintenance-free
I Cylinder head
Height
Distortion
Grinding Valve and T _
Valve head diameter
Valve head margin thickness
Valve face angle IN mm (in) EX
IN
mm b-4 Fx mm (in) 107.4-107.6 (4.228-4.236)
mm (in) 0.15 (0.006) max. 0.10 (0.004) max.
mm (in) 0.20 (0.008) max. 0.10 (0.004) max.
37.9-38.1 (1.492-l ,500) 29.9-30.1 (1.177-1.185)
31 .Q-32.1 (1.256-l ,264) 24.85-25.15 (0.978-0.990)
0.8 (0.031) 0.9 (0.035)
1.1 10.043) 1 .o (0.039)
-, ,
\- I
IN 45O
EX 45O
I I Standard
IN
Minimum
Valve length mm (in)
EX Standard
Minimum I”L. I, \*.“cL
Valve stem diameter IN
mm On) EX 6.970-6.985 (0.2744-
6.965-6.980 (0.2742-
Guide inner diameter
I Valve stem-to-guide clearance mm (in) lTj7---- ,
Maximum 103.77 (4,085) 101.77 (4.007)
103.27 (4.066) 101.27 (3.987)
102.67 (4.042) 102.97 (4.054)
,n+ 47 IA noo
1 102.47 (4.034)
-0.2750) 5.970-5.985 (0.2350-0.2356)
-0.2748) 5.965-5.980 (0.2348-0.2354)
3.2760-0.2768) 6.01-6.03 (0.2366-0.2374)
0.025-0.060 (0.001 O-0.0024)
0.030-0.065 (0.001 l-0.0026)
-.
I
mm (in) 1 7.01-7.03 (r ‘
1 IN
Guide projection (Height “A”) IN
mm (in) Ex 13.2-l 3.8 (0.520-
13.2-13.8 (0.520-
TD-2