1987 MAZDA 626 alternator belt

5 OUTLINE
Item
Engine F6 F8 FE
(8 VALVE)
FE (12 VALVE) FE (DOHC)
F6 and F8
-2-2/100 6-10/300
FE (8 VALVE)—Carbu retor Unleaded fuel -2—2/120 8—12/245
Distributor
Vacuum spark advance (Crank angle/Vacuum)
Others (MTX) -2-(ATX) -2--2/100 16-
-2/100 10-
-20/250
-14/200
degree/mmHg (inHg) FE (12 VALVE)—Carburetor
-2-2/120 11-15/300
FE—Fuel injection (except FE DOHC) [A chamber] -2-2/125 18-22/300
[B chamber] -2-2/125 -6 10/200
Spark plug
Type
FE (8 VALVE)*1 NGK: BPR5ES-11, BPR6ES-11 Nippon Denso: W16EXR-U11, W20EXR-U11 Others
NGK: BPR5ES, BPR6ES Nippon Denso: W16EXR-U, W20EXR-U
NGK:
BCPR5E, BCPR6E Nippon
Denso: Q16PR-U, Q20PR-U
Unleaded fuel
NGK: BCPR5E-11 BCPR6E-11 BCPR7E-11
Leaded fuel NGK: BCPR5E BCPR6E
Plug gap mm (in)
0.75-0.85 (0.030-0.033), FE (8 VALVE)*1 1.0-1.1 (0.039-0.043)
0.7-0.8
(0.028-0.031)
1.0-1.1 "
/n noo
n n/9
0.7-0.8 *2 (0.028-0.031)
Firing order 1-3—4-2 76G05X-504
Diesel Engine
——Engine Item RF-N RF-CX
Battery
Voltage V 12, Negative ground Battery Type and capacity
(20 hour rate) 80D26L (65)
50D20L, 50D20R (50)-ECE 80D26L (65)
65D23L, 65D23R (55)
Alternator
Type A.C.
Alternator
Output V-A 12-70 12-75
Alternator
Regulator type Transistorized (built-in IC regulator)
Alternator Regulated voltage V 14.1-14.7 Alternator
Brush length mm (in)
Standard 16.5 (0.650) 21.5 (0.846)
Alternator
Brush length mm (in) Minimum 8.0 (0.315) 8.0 fO.315)
Alternator
Drive belt tension
mm (in)/98 N (10 kg. 92 lb) New: 9-11 (0.35-0.43), Used: 12-14 (0.47-0.55)
Starter
Type Reduction
Starter Output V—kW 12—2.0, 12-2.2 (Cold area) Starter Brush length
mm (in)
Standard 2.0 kW: 17.0 (0.669). 2.2 kW: 18.0 (0.709) Starter Brush length
mm (in) Minimum 2.0 kW: 11.0 (0.453), 2.2 kW: 11.0 (0.453)
Firing order 1-3-4-2
Unleaded fuel model *2 Leaded fuel model
76G05X-505
5-6

TROUBLESHOOTING GUIDE 5
TROUBLESHOOTING GUIDE
Problem Possible cause Remedy Page
Starter does not turn at all, or Its turning speed Is too slow to start the engine.
Battery and related parts Poor contact of battery terminals Poor grounding of negative cable Voltage drop caused by discharged battery Insufficient voltage caused by battery malfunction
Clean and tighten Clean and repair Recharge Replace
5- 8
5- 8 5- 8
Ignition switch and related parts Poor contact of ignition switch Loose ignition switch wiring or connector Broken wire between ignition switch and magnetic switch
Replace Repair Repair or replace 5-38,45,56,66
Magnetic switch and related parts Loose wiring and/or connectors Burnt magnetic switch contact plate or improper contact Broken wire in magnetic switch pull-in coil Broken wire magnetic switch holding coil
Repair Replace
Replace Replace
5-38,45,56,66 5-43,54,64,74
5-43,54,64,74 5-43,54.64,74
Starter Poor contact of brushes
Fatigued brush spring Poor grounding of field coil Poor soldering of field coil Commutator mulfunction Grounded armature Worn parts
Adjust contact or replace Replace Replace Repair Repair or Replace Replace Replace
5-43,54,64,74
Starting problem Gasoline engine Insufficient battery capacity Malfunction of spark plug (s)
Loose positive terminal Damaged distributor cap or rotor Ignition coil malfunction laniter malfunction
Recharge Clean, adjust or replace Tighten Replace Replace Renlane
5— 8 5— 9
5—16 5—10 5-16,20
Diesel engine Insufficient battery capacity QSS svstem malfunction Recharge ReDlace 5— 8 5-76
Starter turns but pinion gear does not mesh with ring gear
Starter Tip of overrunning clutch pinion is worn Weakened overrunning clutch drive spring Worn overrunning clutch Improper sliding of spline
Worn bushing Worn ring gear
Replace Replace Replace Adjust contact and repair, or replace Replace ReDlace
5-40,54,70
Starter turns continuously (does not stop) Magnetic switch Sticking contact place of magnetic switch Layer shorting coil of magnetic switch Ignition switch does not return
Replace Replace Rfinlanfi
5-43,54,64,74 5-43,54,64,74
Misfiring Dirty or damaged spark plug (s) Malfunction of wiring, or open circuit Damaged distributor cap
Clean or replace Repair or Replace Replace
5- 9 5—10 5—16
Discharging of battery Alternator Loose drive belt Grounded or broken stator coil Broken rotor coil Poor contact of brush and slip ring
Malfunction of rectifier Malfunction of IC regulator Battery and related parts Insufficient or unsuitable battery electrolyte Malfunction of battery electrode (internal short-circuit) Poor contact of battery terminal (s) Excessive electric load
Adjust Replace Replace Clean, repair or replace Replace Replace
Adjust Replace
Clean and tighten Check power consump-tion and short circuit
5-37 5-32 5-32 5-32
5-34
5— 8 5- 8
5— 8
Overcharging of battery IC regulator malfunction Operating in extremely high temperature Replace Reoair
Poor acceleration Mis-adjusted ignition timing Distributor malfunction Adjust Repair or replace 5—11 5—11
Knocking Mis-adjusted ignition timing | Distributor malfunction Adjust Repair or replace 5—11 5—11
76G05X-003
5-7

ALTERNATOR 5
TEST 6
1. Turn the ignition switch ON.
2. Turn all electric loads off and release
the brake pedal.
3. Check that voltage between S terminal
and ground is battery voltage.
S terminal
76G05X-057
76G05X-030
86U05X-074
REMOVAL (GASOLINE)
Remove in the sequence shown in the figure.
1. Disconnect the negative battery terminal.
2. Disconnect the wire and connector from the al-
ternator.
3. Remove the bolts.
4. Remove the V-belt.
-5. Remove the alternator to upper side (LHD) or lower
side (RHD).
REMOVAL (DIESEL)
1. Disconnect the negative battery terminal.
2. Remove the right hand driveshaft (Refer to Sec-
tion 9).
3. Disconnect the wire and connector from the al-
ternator.
4. Loosen the idle pulley nuts and remove the drive
belts.
5. Remove the bolts and remove the alternator from
under the vehicle.
76G05X-031
5-27

ALTERNATOR 5
Adjusting bar bolt
Mounting bolt
Alternator
drive pulley
Mounting bolt
Drive pulley
76G05X-037
-Adjusting bolt
tidier pulley
v v Ml/v — Locknut
/
Alternator x
V-BELT TENSION (GASOLINE)
Adjustment
1. Loosen the alternator mounting bolt and adjusting
bar bolt.
2. Adjust the alternator belt deflection while pushing
the V-belt with a force of 98 N (10 kg, 22 ft-lb).
Deflection:
New: 6—8 mm (0.24—0.31 in)
Used: 7—9 mm (0.27—0.35 in)
3. Tighten the bolts and recheck the tension.
V-BELT TENSION (DIESEL)
Adjustment
1. Looson the alternator idler pulley locknut.
2. Adjust the alternator belt deflection while pushing
the V-belt with a force of 98 N (10 kg, 22 ft-lb).
Deflection:
Alternator
New: 8—10 mm (0.31—0.39 in)
Used: 9—11 mm (0.35—0.43 in)
76G05X-038
—" , ^Comprex pulley
/ Locknut
/ ^"Wvl If Adjusting bolt^
Idler pulley
Alternator pulley—-V-
(rear) >
Comprex
New: 4.0—5.0 mm (0.16—0.20 in)
Used: 4.5—5.5 mm (0.18—0.21 in)
3. Tighten the bolts and nuts and recheck the tension.
76G05X-058
5—37

TECHNICAL DATA 30
Item Engine model RF-CX RF-N
Connecting rod and connecting rod bearing

Length (Center
to
center) mm (in) 151.95-152.05 (5.9823—5.9862)
Maximum twisting and bending mm (in) 0.080 (0.0031)
per 50
(1.969)
Small end bushing inner diameter mm (in) 30.014-30.030 (1.1817-1.1823) 25.014-25.030 (0.9848-0.9854)
Big end bore mm (in) 54.002-54.017 (2.1261-2.1266)
Big end width mm (in) 25.900—26.100 (1.0197—1.0276)
Connecting rod side clearance mm (in) Standard 0.11-0.262 (0.0043-0.0103) Connecting rod side clearance mm (in) Maximum 0.30 (0.012)

Crankshaft

Crankshaft runout mm (in) 0.05 (0.002) max.
Standard Standard 59.937-59.955 (2.3597-2.3604)
size Minimum 59.89 (2.358)
0.25 (0.010) Standard 59.687-59.705 (2.3499-2.3506)
Main journal diameter undersize Minimum 59.64 (2.348) mm (in) 0.50 (0.020) Standard 59.437-59.455 (2.3400-2.3407)
undersize Minimum 59.39 (2.338)
0.75 (0.030) Standard 59.187-59.205 (2.3302-2.3309)
undersize Minimum 59.14 (2.328)
Main journal taper and out-of-round mm (in) 0.05 (0.002) max.
Standard Standard 50.940-50.955 (2.0055—2.0061)
size Minimum 50.89 (2.004)
0.25 (0.010) Standard 50.690-50.705 (1.9957-1.9963)
Crankpin diameter undersize Minimum 50.64 (1.994) mm (in) 0.50 (0.020) Standard 50.440-50.455 (1.9858—1.9864)
undersize Minimum 50.39 (1.984)
0.75 (0.030) Standard 50.190-50.205 (1.9760-1.9766)
undersize Minimum 50.14 (1.974)
Crankpin taper and out-of-round mm (in) 0.05 (0.002) max.

Main bearing

Main journal bearing
oil
clearance Standard 0.031-0.050 (0.0012-0.0020)
mm (in) Maximum 0.08 (0.0031)
Available undersize bearina mm fin) 0.25 (0.010), 0.50 (0.020), 0.75 (0.030)

Crankpin bearing

Crankpin bearing
oil
clearance mm (in) Standard 0.027-0.055 (0.0011-0.0022) Crankpin bearing
oil
clearance mm (in) Maximum 0.08 (0.0031)
Available undersize bearing mm (in) 0.25 (0.010), 0.50 (0.020), 0.75 (0.030)

Thrust bearina (center main bearina)

Crankshaft end play mm (in) Standard 0.04-0.282 (0.0016—0.0111) Crankshaft end play mm (in) Maximum 0.30 (0.012)
Bearing width mm (in) Standard size 2.00-2.05 (0.0787-0.0807) Bearing width mm (in) Oversize 2.175-2.225 (0.0856-0.0876)

Timing belt

Deflection mm (in)/N (ka,
lb)
9.0-11.5 (0.35--0.45V98 (10,
22)
Drive belt deflection

Alternator mm (in) New 8-10 (0.31-0.39) Alternator mm (in) Used 9-11 (0.35-0.43)
A/C compressor mm (in) New 8.5-9.5 (0.33-0.37) A/C compressor mm (in) Used 9.5-10.5 (0.37-0.41)
Vacuum pump mm (in) New 7.5-8.5 (0.30—0.33) Vacuum pump mm (in) Used 8.5-9.5 (0.33-0.37)
P/S pump with vacuum pump mm (in) New 6.5-7.5 (0.26—0.30) P/S pump with vacuum pump mm (in) Used 7.0-8.0 (0.28—0.31)
Pressure wave supercharger
mm
(in) New 4.0-5.0 (0.16-0.20) Pressure wave supercharger
mm
(in) Used 4.5-5.5 (0.18-0.22)

30—13

TECHNICAL DATA 30
5. ENGINE ELECTRICAL SYSTEM
Gasoline Engine
——— Engine
F6 F8 FE FE FE
Item ____ F6 F8 (8 VALVE) (12 VALVE) (DOHC)

Battery
Voltage
Type and capacity
12, Negative ground
(20 hour rate) 34B19L(S) (33 Ah): General 50D20L (50 Ah), 55D23L (60 Ah):
ECE

Alternator
Type A.C.
Output V-A 12-70
Regulator type Transistorized (built-in
IC
regulator)
Regulated voltage 14.1-14.7
Brush length
mm (in) Standard 16.5 (0.650)
Minimum 8.0 (0.315)
Drive belt tension
mm (in)/98
N (10
kg,
22 lb)
New:
6-8
(0.24-0.32), Used:
7-9
(0.28—0.35)
Starter
Type Coaxial reduction: Middle East
&
General (FE
•
carburetor)
Non-reduction: Others
Output V-kW 12-0.85
Brush length mm (in)
12-0.95
Standard 17.0 (0.669)
Minimum 11.5 (0.453)

Unleaded fuel

17,0 (0.669)

Others

17.5 (0.689)

Unleaded fuel
11.5 (0.453)
Others
10.0 (0.394)

12-1.4 12-0.95
17.0 (0.669)
11.5 (0.453)
Ignition timing 6
±
1
°
BTDC (Vacuum hose disconnected) 12
±
1° BTDC
(Test connector
grounded)
Distributor
Type Fully transistorized (HEI)
Electronic spark advance
Centrifugal spark advance
(crank angle/engine speed)
degree/rpm
F6
-2-2/1,000 6-10/2,100 14-18/6,100
F8 -2-2/1,000 10—14/2,100 18-22/6,100
FE
(8
VALVE)—Carburetor Unleaded fuel
(MTX)-2—2/1,760 12—16/3,360 22—26/5,320 (ATX)-2-2/1,300 12-16/3,360 22-26/5,320
Others
-2-2/1,460 10-14/2,540 22-26/5,540
FE (12 VALVE)—Carburetor -2-2/1,200 10-14/2,400 10-14/4,000 16-20/5,000
FE—Fuel injection (except
FE
DOHC)
-2-2/1,000 10-14/2,600 10-14/4,600 16-20/5,800

30—23

30 TECHNICAL DATA
Engine
Item F6 F8 FE FE FE F8 (8 VALVE) (12 VALVE) (DOHC)

Distributor
Vacuum spark advance
(Crank angle/Vacuum)
degree/mmHg (inHg)
Type
Spark plug
F6 and
F8
-2-2/100
6-10/300
FE
(8
VALVE)—Carburetor Unleade fuel -2-2/120 8-12/245
Others (MTX)-2-2/100 16-20/250
(ATX) -2-2/100 10-14/200
FE (12 VALVE)—Carburetor
-2-2/120 11-15/300
FE—Fuel injection (except
FE
DOHC) [A chamber] -2-2/125 18—22/300
[B chamber] -2-2/125
-6--10/200

FE
(8
VALVE)* NGK: BPR5ES-11, BPR6ES-11 Nippon Denso: W16EXR-U11, W20EXR-U11
Others NGK: BPR5ES, BPR6ES Nippon Denso: W16EXR-U, W20EXR-U
Plug
gap
mm (in)

Firing order

0.75-0.85 (0.030-0.033),
FE

(8 VALVE)* 1.0-1.1
(0.039-0.043)

1-3-4-2

NGK:
BCPR5E, BCPR6E Nippon Denso: Q16PR-U, Q20PR-U
0.7-0.8
(0.028-0.031)

NGK:

Unleaded fuel BCPR5E-11 BCPR6E-11 BCPR7E-11
Leaded fuel BCPR5E BCPR6E

1.0-1.1 (0.039-0.043)*1
0.7-0.8
(0.028-0 031)'2
Diesel Engine
————Engine Item " RF-N RF-CX

r5a!:ery
Voltaae
V
12, Negative around
r5a!:ery Type and capacity (20 hour rate) 80D26L (65)
50D20L, 50D20R (50)-ECE 80D26L (65) 65D23L, 65D23R (55)
Alternator

TvDe
A.C.
Alternator
Output
V—A
12-70 12-75
Alternator
Regulator tvoe Transistorized (built-in
IC
reaulator)
Alternator Regulated voltaae
V
14.1-14.7 Alternator
Brush length mm (in)
Standard 16.5 (0.650) 21.5 (0.846)
Alternator
Brush length mm (in) Minimum 8.0 (0.315) 8.0 (0.315)
Alternator
Drive belt tension
mm (in)/98
N
(10 ka,
92 lb)
New: 9-11 (0.35-0.43), Used: 12-14 (0.47-0.55)
Starter
Type Reduction
Starter Output V—kW 12-2.0, 12-2.2 (Cold area) Starter Brush length
mm (in)
Standard 2.0 kW: 17.0 (0.669),
2.2
kW: 18.0 (0.709) Starter Brush length
mm (in) Minimum 2.0 kW: 11.0 (0.453).
2.2
kW: 11.0 (0.453)
Firina order 1-3-4-2
*1 Unleaded fuel model
*2 Leaded fuel model

30-24

30 TECHNICAL DATA
Body type Specification (W) (BULB TRADE NO)
Item MX-6/Coupe Sedan Hatchback

Brake 1.4
Oil pressure 1.4
Fuel 1.4
Washer level 1.4
Rear 1.4
4WS
— —
1.4 (ECE)
Indicator and warning lights
Door 1.4 Indicator and warning lights Seat belt 1.4 Indicator and warning lights ABS 1.4
Alternator 1.4
High beam 3.4
Turn signal 3.4
O/D OFF 0.8
A/T mode 0.8 (ECE)
A/T position 0.8
Glove compartment light 3.4
Interior lights Interior light 10
Luggage compartment light 5
Motor 4.8
Hazard switch 1.4
Cigar lighter 3.4
Auto cruise main switch 0.5
Illumination lights AAS switch 1.4
Rear defroster switch 1.4
A/T switch 1.4
A/T 3.4
IG switch 1.4

STANDARD BOLT AND NUT TIGHTENING TORQUE
Diameter
mm (in)
Pitch
mm (in)
4T 6T 8T Diameter
mm (in)
Pitch
mm (in) N-m m-kg ft-lb N-m m-kg ft-lb N-m m-kg ft-lb

6 (0.236) 1 (0.039) 4.2-6.2 0.43-0.63 3.1-4.6 6.9-9.8 0.7-1.0 5.0-7.2 7.8-11.8 0.8-1.2 5.8—8.8
8 (0.315) 1.25 (0.049) 9.8—14.7 1.0-1.5 7.2-10.8 16-23 1.6-2.3 12-17 18—26 1.8-2.7 13-20
10 (0.394) 1.25 (0.049) 20-28 2.0—2.9 14-21 31-46 3.2-4.1 23—34 36-54 3.7-5.5 27-40
12 (0.472) 1.5 (0.059) 34—50 3.5-5.1 25-37 55-80 5,6-8.2 41-59 63-93 6.4-9.5 46-69
14 (0.551) 1.5 (0.059)
— — —
75-103 7.7-10.5 56-76 102—137 10-14 75-101
16 (0.630) 1.5 (0.059)
— — —
116-157 12-16 85-116 156-211 16-22 115-156
18 (0.709) 1.5 (0.059)
— — —
167-225 17-23 123-166 221-299 23-31 163—221
20 (0.787) 1.5 (0.059)
— — —
231-314 24-32 171-231 308—417 31-43 227-307
22 (0.866) 1.5 (0.059)
— — —
314—423 32-43 231-312 417—564 43-58 307-416
24 (0.945) 1.5 (0.059)
— — —
475—546 41—56 298—403 536-726 55-74 396-536

30—40