1987 MAZDA 626 suspension

Mazda
626
Workshop
Manual
FOREWORD
This workshop manual is intended for use
by service technicians of authorized Mazda
dealers to help them service Mazda vehicles.
This manual can be also useful in diagnosing
certain problems and performing some repair
and maintenance on Mazda vehicles.
For proper repair and maintenance, it is im-
portant to be thoroughly familiarized with this
manual. It is recommended that this manual al-
ways be kept in a handy place for quick and
easy reference.
All the contents of this manual, including pho-
tographs, drawings, and specifications, are the
latest available at the time of printing. As modifi-
cations affecting repair or maintenance occur,
relevant information supplementary to this
volume will be made available at Mazda deal-
ers. This manual should be kept up-to-date.
Mazda Motor Corporation reserves the right
to alter the specifications and contents of this
manual without obligation or advance notice.
All rights reserved. No part of this book may
be reproduced or utilized in any form or by any
means, electronic or mechanical, including
photocopying, recording, or by any informa-
tion storage and retrieval system, without per-
mission in writing.
Mazda Motor Corporation
HIROSHIMA JAPAN
Refer to the following wiring diagrams if
necessary.
Refer to From No.
5095-10-87 G L.H.D.
5096-10-87 G R.H.D.
5096-20-871 Germany
5095-30-871 French
CONTENTS
Title Section
General Information G
Pre-Delivery Inspection and Scheduled
Maintenance 0
Gasoline F6, F8, FE 1A
Engine
Gasoline
FE (DOHC) 1B
Diesel RF-CX, RF-N 1C
Lubrication System
Gasoline 2A
Lubrication System
Diesel 2B I
Cooling System
Gasoline 3A 1
Cooling System
Diesel 3B
Carburetor F6, F8, FE 4A
Fuel and Emission Fuel FE 4B I
Control Systems Injection FE (DOHC) 4C
Diesel RF-CX, RF-N 4D j
Engine Electrical System 5
Clutch 6
Manual 7A
Transaxle
Automatic
EC-AT
and
4-Speed
7B
3-Speed 7C
Front and Rear Axles 9
Steering System 10
Braking System 11
Wheels and Tires 12
Suspension 13
Body 14 |
Body Electrical System 15
Air Conditioning System 16
Technical Data 30
Special Tools 40
© 1987 Mazda Motor Corporation
PRINTED IN JAPAN, JULY'87 ©
1163-10-87G
expert22 flna http://rutracker.org

CHASSIS NUMBER LOCATION/ABBREVIATIONS/UNITS G
CHASSIS NUMBER LOCATION UNITS
67U0GX-005
ENGINE MODEL AND
NUMBER LOCATION
Nm (m-kg, ft-lb or in-lb). Torque
rpm Revolutions per minute A Ampere(s) V Volt(s) U Ohm(s) (resistance) kPa (psi) Pressure
(usually positive) mrriHg (in Hg) Pressure
(usually negative) W Watt
76G0GX-004
ABBREVIATIONS
67U0GX-007
AAS Auto adjusting suspension A/C Air conditioner ACC Accessories ABDC After bottom dead center ATDC After top dead center ATX Automatic transaxle ATF Automatic transmission fluid ABS Anti-lock brake system BBDC Before bottom dead center BTDC Before top dead center EX Exhaust EC-AT Electronically controlled automatic transaxle ESPS Engine speed sensing power steering EC PS Electronically-controlled power steering HLA Hydraulic lash adjuster IG Ignition IN Intake IC Integrated circuit INT Intermittent LH Left hand
MTX Manual transaxle M Motor OFF Switch off ON Switch on PCV Positive crankcase ventilation P/S Power steering P/W Power window RH Right hand RF-CX Comprex supercharged RF
engine
RF-N Normally aspirated RF engine ST Start sw Switch SST Special tools 4WS 4-wheel steering
PWS 2-wheel steering
4HAT 4-speed hydraulic automatic
transaxle Fl Fuel injection
76GQGX-005
G—9

0 PRE-DELIVERY INSPECTION
PRE-DELIVERY INSPECTION TABLE
EXTERIOR
INSPECT and ADJUST, if necessary, the following items
to the specifications:
• Glass, exterior bright metal and paint for damage
• Wheel lug nuts
88—118 N m (9—12 m-kg, 65—87 ft-lb)
• Tire pressures (Refer to section 12)
• All weatherstrips for damage or detachment
• Operation of bonnet release and lock
• Operation of fuel lid and trunk lid (Back door) opener
• Door operation and alignment
• Headlight aiming
INSTALL following parts:
• Wheel caps or rings (if equipped)
• Outside rear view mirror(s)
UNDER BONNET—ENGINE OFF
INSPECT and ADJUST, if necessary, the following items
to the specifications:
• Fuel, coolant and hydraulic lines, fittings, connections and
components for leaks
• Engine oil level
• Power steering fluid level (if equipped)
• Brake and clutch master cylinder fluid level (if equipped)
• Windshield washer reservoir fluid level
• Radiator coolant level and specific gravity
Protection °C (°F) Specific gravity at 20°C (68°F)
-4 (25) 1.028
-16(3) 1.054
-26 (-15) 1.066 -40 (-40) 1.078
• Tightness of water hose clamps (including heater hoses)
• Tightness of battery terminals
• Manual transaxle oil level
• Drive belt tensions (Refer to section 1)
• Accelerator cable and its linkage for free movement
• Headlight cleaner fluid level (if equipped)
CLEAN spark plugs
INTERIOR
INSTALL the following parts:
• Rubber stopper for inside rear view mirror
• Fuse for accessories
CHECK the operations of the following items:
• Seat controls (sliding and reclining) and head rest
• Door locks including childproof door locks (if equipped)
• Seat belts and warning system
• Ignition switch and steering lock
• Inhibitor switch (ATX only)
• All lights including warning and indicator lights
• Sound warning system
• Headlight cleaner (if equipped)
• Horn, wipers and washers (front and rear, if equipped)
• Radio and antenna (if equipped)
• Cigarette lighter and clock
• Remote control outside rear view mirrors (if equipped)
• Power windows (if equipped)
• Heater, defroster and air conditioner at various mode
selection (if equipped)
• Sunroof (if equipped)
ADJUST antenna trimmer on radio (if equipped)
CHECK the following items:
• Presence of spare fuse
• Upholstery and interior finish
CHECK and ADJUST, if necessary, the following items:
• Operation and fit of windows
• Pedal height and free play of brake and clutch pedal
Pedal height mm (in) free play mm (in)
Clutch pedal 216.5-221.5 (8.52-8.72) 5-13 (0.2-0.51)
Brake pedal 222-227 (8.74-8.94) 4-7 (0.16-0.28)
• Parking brake
5-7 noches/98 N (10 kg, 22lb)
UNDER BONNET—ENGINE RUNNING AT
OPERATING TEMPERATURE
CHECK the following items:
• Operation of idle-up system for air conditioner or power
steering (if equipped)
• Automatic transaxle fluid level
• Operation of dash pot
• Initial ignition timing
• Idle speed
ON HOIST
CHECK the following items:
• Underside fuel, coolant and hydraulic lines, fittings, con-
nections and components for leaks
• Tires for cuts or bruises
• Steering linkage, suspension, exhaust system and all un-
derside hardware for looseness or damage
REMOVE protective cover from brake discs
ROAD TEST"
CHECK the following items:
• Brake operation
• Clutch operation
• Steering control
• Operation of meters and gauge
• Squeaks, rattles or unusual noise
• Engine general performance (including turbo)
• Emergency locking retractors
• Cruise control system (if equipped)
AFTER ROAD TEST
REMOVE seat and floor mat protective covers
CHECK for necessary owner information materials, tools and
spare tire in vehicle
-76G00X-002
0-2

Interval
Procedure & item
Number of Months or km, whichever corns first
©1 ©2 ©3 ©4 Service data and inspection point Page
Interval
Procedure & item
Months — 6 12 18 24 30 36 42 48 ©1 ©2 ©3 ©4 Service data and inspection point Page
Interval
Procedure & item
x 1000 Km 1 10 20 30 40 50 60 70 80 ©1 ©2 ©3 ©4 Service data and inspection point Page
Interval
Procedure & item Miles x 1000 0.6 6 12 18 24 30 36 42 48
©1 ©2 ©3 ©4 Service data and inspection point Page
Idle-up solenoid valve I I I I O MTX o X X — 4A—56
All electrical system *4 I I I I I I I I o o o o • Check the all electrical system Section 15
Head light aligment A A A A o o o o • Check the head light aiming 14-31
Steering and front suspension I I I I o o o 0 • Damage 10—28
Front and rear power steering system
and hoses (For 4WS) I I X X o X • Operation and looseness • Fluid leakage or oozing 10—44 10—14
4-Wheel steering system operation
and linkage (For 4WS) I I X X o X • Operation and looseness
• Fluid leakage or oozing
10—33 10—14
Rear wheel steering steering angle
(For 4WS) I I X X o X • Steering wheel angle: Inner 5°00' ± 45' Outer 5°00' ± 45'
13-54
Solenoid valve oil filter (For 4WS) R R X X o X — 10-41
Rear suspension outer ball joints
(For 4WS) I I X X o X • Damage, looseness and grease
leakage 13—37
Manual transaxle oil A R o o o 0 • Oil capacity 3.35 liters (3.6 US qt, 3.0 Imp qt) 7A-6
Automatic transaxle fluid level A A o o X X • Oil capacity 4-Speed 6.8 liters (7.2 US qt, 6.0 Imp qt) 3-Speed 6.2 liters (6.6 US qt, 5.5 Imp qt)
7B-2
Bolts and nuts on chasis and body T T T T T o o o o — —
Disk brakes/Drum brakes I I I I o o o o
• Min. pad thickness: Front 2.0 mm (0.08 in) Rear 1.0 mm (0.04 in) • Min. disc thickness: Front 14 or 15 inch-wheel
22 mm (0.87 in) 13 inch-wheel 18 mm (0.71 in) Rear 8.0 mm (0.31 in)
• Disc run out:
Front 0.1 mm (0.004 in) Rear 0.1 mm (0.004 in)
• Min. lining thickness: 1.0 mm (0.04 in) • Max, drum inner dia: 230.1 mm (9.06 in)
11—45
11—54
11—45
11—54
11-45 11—54
11-60
11—60

GO
Interval
Procedure & item
Number of Months or km, whichever corns first
©1 ©2 ©3 ©4 Service data and inspection point Page
Interval
Procedure & item
Months — 6 12 18 24 30 36 42 48 ©1 ©2 ©3 ©4 Service data and inspection point Page
Interval
Procedure & item
x 1000 Km 1 10 20 30 40 50 60 70 80 ©1 ©2 ©3 ©4 Service data and inspection point Page
Interval
Procedure & item Miles x 1000 0.6 6 12 18 24 30 36 42 48
©1 ©2 ©3 ©4 Service data and inspection point Page
Dashpot (only for MTX) I I I I X X o X • Operation 4A—50
Coast enrichment solenoid valve I I I I X X o X — 4A—54
All electrical system *4 I I I I I I I I o o o o • Check the all electrical system Section 15
Head light aligment A A A A o o o o • Check the head light aiming 14-31
Steering and front suspension I I I I o o o o 10—28
Front and rear power steering system
and hoses (For 4WS) I I X o X X • Operation and looseness
• Fluid leakage or oozing 10—44
10-14
4-Wheel steering system operation
and linkage (For 4WS) I I X o X X • Operation and looseness
• Fluid leakage or oozing
10—33 10—14
Rear wheel steering angle (For 4WS) I I X o X X • Steering wheel angle: Inner 5°00' ± 45' Outer 5°00' ± 45'
13-54
Solenoid valve oil filter (For 4WS) R R X o X X — 10—41
Rear suspension outer ball joints
(For 4WS) I I X o X X • Damage, looseness and grease
leakage 13-37
Manual transaxle oil A R o o o o • Oil capacity 3.35 liters (3.6 US qt, 3.0 Imp qt) 7A—6
Automatic transaxle fluid level A A o o o X
• Oil capacity 4-Speed and EC-AT 6.8 liters (7.2 US qt, 6.0 Imp qt) 3-Speed 6.2 liter (6.6 US qt, 5.5 Imp qt)
7B—71
7C—25
Bolts and nuts on chasis and body T T T T T o o o o — —
Brake lines, Hoses, and connections I I I l_
I
o o o o • Proper attachment and connections 11-8
Disk brake/Drum brake I I I
l_
I o o o 0
• Min. pad thickness: Front 2.0 mm (0.08 in) Rear 1.0 mm (0.04 in)
• Min. disc thickness: Front 14 or 15 inch-wheel 22 mm (0.87 in)
13 inch-wheel 18 mm (0.71 in) Rear 8.0 mm (0.31 in)
• Disc run out:
Front 0.1 mm (0.004 in) Rear 0.1 mm (0.004 in) • Min. lining thickness: 1.0 mm (0.04 in)
• Max. drum inner dia: 230.1 mm (9.06 in)
11—45 11—54
11—45
11-54
11—45
11-54
11—60
11-60

0 1 ro o
interval
Procedure & item
Number of Months or km, whichever corns first
©1 ©2 ©3 ©4 Service data and inspection point Page
interval
Procedure & item
Months — 6 12 18 24 30 36 42 48 ©1 ©2 ©3 ©4 Service data and inspection point Page
interval
Procedure & item

x 1000 Km
1 10 20 30 40 50 60 70 80 ©1 ©2 ©3 ©4 Service data and inspection point Page
interval
Procedure & item
Miles x 1000
0.6 6 12 18 24 30 36 42 48
©1 ©2 ©3 ©4 Service data and inspection point Page
Front suspension ball joints I I O o o o • Damage, looseness and grease
leakage 13—20
Drive shaft dust boots I I I I o o 0 o • Cracking and damage 9-32 9—36
Bolts and nuts on chassis and body T T T T T o 0 o o —

ELECTRICAL COMPONENTS OF ELECTRONICALLY-CONTROLLED POWER STEERING (ECPS) 1 0

ELECTRICAL
COMPONENTS
OF
ELECTRONICALLY-CONTROLLED POW-
ER STEERING (ECPS)
CIRCUIT DIAGRAM
J POWER STEERING CONTROL SYSTEM (Electronically-Controlled: FE DOHC Engine Without 4WS) AUTO ADJUSTING SUSPENSION CONTROL SYSTEM (AAS)

MAIN FUSE

IcLJ=.cLLJX..=L1.| T'TTTTT'P LB YL GW GY * B «
I-02
Solenoid Valve
[EM] J-04
Check Connector |F|

VG-j-Ijj-LW
J-05
AAS
Conlorl Unit |R| YR YL GR BY B GY WY WR \LL L LuL I 1 L I T. T TTT T T. T,i B G GW LY WL IT TT TI
J-07 Aclualor (FL) |F] WY WR J-08 Aclualor (FR) [D] WY WR J-09 Aclualor (RL) [R| YL YR J-10 Aclualor
(RR) |R|
Yl YR
86U10X-208
Note
Refer to page 10—4 for the component location.
TROUBLESHOOTING GUIDE
The power steering control unit contains a self-diagnosis function to detect malfunctions within itself,
the ECPS electrical components and circuits.
If a malfunction is detected, the control unit indicates where the problem is located by outputting specific
voltage pulsations at terminal wire (YB) of the check connector.
Troubleshooting of the ECPS system, then, is easily performed by comparing the output pattern with
those of the Diagnosis Table on pages 10—89 and 90. 76G10X-019
TROUBLESHOOTING
How To Use Self-Diagnosis System
By using the control unit's self-diagnosis function and
a voltmeter, malfunctions of the system are easily de-
termined. When diagnosing malfunctions, follow the
steps below.
1. Connect a voltmeter to terminal wire (YB) of the
check connector in the engine compartment.
2. Check the output patterns as described on the fol-
lowing page.
86U10X-209
10—87

WHEELS AND TIRES 1 2
86U12X-004
\k
y
i jYj

/ <4/

/ v Wear platform
Wear indicators
86U12X-005
(a) (b)
Shoulder wear Center wear
(c)
Feathered edge
(d)
*f tftiit t
Toe-in or toe-out wear Uneven wear
WHEELS AND TIRES
INSPECTION AND ADJUSTMENTS
Check the following, and adjust or replace as
necessary.
1. Air pressure
Check the air pressure of all tires, including the
spare tire, with an air pressure gauge.
(Refer to page 12—2.)
Caution
The air pressure must be measured when the
tire is cold.
2. Tire wear
Specifications
Remaining tread
Ordinary tires: 1.6 mm (0.063 in) min.
(Tire should be replaced if wear indicators are
exposed.)
Snow tires: 50% of tread
(Tire should be replaced if wear indicators are
exposed.)
Troubleshooting guide
Abnormal tire wear patterns shown in the illustra-
tion can occur. Refer to the chart for the probable
causes and remedies.
Probable cause Remedy
(a) • Underinflation (both sides worn) • Incorrect camber (one side worn) • Hard cornering • Lack of rotation
• Measure and adjust pressure • Repair or replace axle and suspension parts • Reduce speed • Rotate tires
(b) • Overinflation
• Lack of rotation
• Measure and adjust pressure • Rotate tires
(c) • Incorrect toe-in • Adjust toe-in
(d) • Incorrect camber or caster • Malfunctioning suspension • Unbalanced wheel • Out-of-round brake drum or disc • Other mechanical con-ditions • Lack of rotation
• Repair or replace axle and suspension parts • Repair or replace • Balance or replace • Correct or replace
• Correct or replace
• Rotate tires
76G12X-003
12-3