Mazda1984–1987Technical specifications

626 2.0: Technical specifications

Workshop data for the 2-litre diesel (engine code RF). Covers engine, fluids, brakes, service and torques: the figures to check before a job or a parts order.

Summary

Match the engine code (RF) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make
Mazda
Model
626
Years
1984–1987
Fuel
Diesel
Engine code
RF

Performance & efficiency

Power
46 kW (63 hp)
Engine size
1,998 cc
Cylinders
4 · OHC
Compression ratio
23:1

Fluids & capacities

Engine oil (with the filter)
6.8 litres
All 99 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type4/OHC
Capacity cc1998
Compression ratio :123

Injection system

Fuel/injection pump assembly MakeKiki
Fuel/injection pump assembly TypeVE LNP216
Injector nozzle MakeBosch
Nozzle and holder assembly Part No.0 430 610 007
Nozzle opening pressure - new/used bar135/116

Injection sequence

The injection sequence for the Mazda 626 2.0 (1984–1987) is 1-3-4-2.

Injection sequence1-3-4-2

Valve clearances

Valve clearances for the Mazda 626 2.0 (1984–1987) are 0,25 mm inlet and 0,35 mm exhaust, measured cold.

Valve clearance - INLET mm0,25 cold
Valve clearance - EXHAUST mm0,35 cold

Engine oil & fluids

Engine oil

The Mazda 626 2.0 (1984–1987) takes 6.8 litres of engine oil with the filter.

See the reference table for the complete engine oil entries and their conditions.

Manual gearbox

The manual gearbox has a listed capacity of 3.4 litres. The specified oil is SAE 75W-90.

Coolant

The listed total cooling-system capacity is 7.0 litres.

Grades, filling conditions and capacities

Lubricants and capacities — complete reference
Engine oil options
Ambient temperature range ➞10°C
Engine oil grade SAE 5W-30
Engine oil classification API/ACEA CF/B2
Ambient temperature range -15°C➞40°C
Engine oil grade SAE 10W-30
Engine oil classification API/ACEA CF/B2
Engine with filter(s) litres 6.8
Other lubricants and capacities
Manual transmission oil grade SAE 75W-90
Manual transmission litres 3.4
Automatic transmission fluid Type Dexron II
Automatic transmission (dry fill) litres 6.2
Cooling system - total capacity litres 7.0

Brakes & wear limits

Brake disc thickness

Brake discs on the Mazda 626 2.0 (1984–1987) are replaced at a minimum thickness of 18 mm (ventilated) front and 8 mm rear.

Minimum disc thickness for replacement - ventilated Front18 mm
Minimum disc thickness for replacement Rear8 mm
Maximum drum diameter for replacement Rear201,1 mm

Brake disc and drum dimensions

Disc runout Front0,10 mm
Disc runout Rear0,10 mm
Minimum pad thickness Front1 mm
Minimum pad thickness Rear1 mm
Minimum shoe thickness Rear1 mm
Parking brake travel No. of notches5-7

Service & electrical

Battery

The Mazda 626 2.0 (1984–1987) uses a 12 V, 50 Ah battery (reserve capacity 80 minutes).

Battery V/RC(Ah)12/80 (50)

Glow plugs

Glow plugs for the Mazda 626 2.0 (1984–1987): Beru 705 MJ, Bosch 0 250 202 056, Champion CH97 and Lucas/CAV HDS241.

Glow plug nominal rating V/A10,5/16,5
Glow plug activation time secs20 Max
Glow plug - part no. Beru705 MJ
Glow plug - part no. Bosch0 250 202 056
Glow plug - part no. ChampionCH97
Glow plug - part no. Lucas/CAVHDS241

Tuning and emissions

Plunger travel (pump) mm ABDC1,0
Crankshaft position (n = ATDC) °BTDC—
Adjusting method Engine/PumpPointer/Dial gauge
Dynamic timing v = BTDC, n = ATDCv
- Time Trac Stanadyne, Snap-on °/rpm10,5/800
Idle speed rpm800-850
Rated no load speed rpm5100-5300
Oil temperature °C60
Idle speed - for smoke test rpm800-850
Governed speed range - for smoke test rpm5100-5300
Maximum time at governed speed secs1,0
Test mode A/BB
Probe type 1/21
Smoke opacity - EU limit m-1 (%)2,50 (66)

Starting and charging

Starter motor MakeMitsubishi
Maximum cranking amps A135-165
Alternator MakeMitsubishi
Alternator output A/V/rpm75/14,4/2000

Service checks and adjustments

Compression pressure bar30,0
Oil pressure bar/rpm3,0 Min/3000
Radiator cap bar0,75-1,05
Thermostat opens °C82
Drive belt size - alternator mm12,5x925
Drive belt size - PAS/AC mm12,5x1050
Drive belt tension - alternator/PAS/AC mm9-11

Tightening torques

Cylinder head bolt torque

The cylinder head bolts on the Mazda 626 2.0 (1984–1987) are tightened in 3 stages: 29 Nm, then 90°, then a final 90°.

Cylinder head
Maximum bolt length114,5 mm
Tighten29 Nm
Tighten90°
Tighten90°
Cylinder head instructions—
Other engine tightening torques
Main bearings Renew bolts/nutsNo
Main bearings Stage 140 Nm
Main bearings Stage 285 Nm
Big end bearings Renew bolts/nutsNo
Big end bearings Stage 133 Nm
Big end bearings Stage 267 Nm
Oil pump to cylinder blockM8=19-26 Nm M10=45 Nm
Sump bolts8-11 Nm
Sump drain bolt29-41 Nm
Flywheel/driveplate176-186 Nm
Clutch pressure plate18-26 Nm
Crankshaft pulley/damper centre bolt157-167 Nm
Camshaft sprocket/gear55-65 Nm
Camshaft carrier/cap20-26 Nm
Camshaft/rocker cover7-10 Nm
Inlet manifold to cylinder head16-23 Nm
Exhaust manifold to cylinder head22-26 Nm
Injector/clamp59-69 Nm
Injector pipe unions25-29 Nm
Injector nozzle to holder29-49 Nm
Fuel/injection pump sprocket/gear59-69 Nm
Fuel/injection pump mounting37-52 Nm
Glow plugs15-20 Nm
Chassis tightening torques
Front hub235-319 Nm
Steering track rod end29-44 Nm
Brake caliper to carrier Front36 Nm
Brake caliper/carrier to hub Front88 Nm
Brake caliper to carrier Rear20 Nm
Brake caliper/carrier to hub Rear55 Nm
ABS sensor Front16-23 Nm
ABS sensor Rear16-23 Nm
Road wheels90-110 Nm

Frequently asked questions

What is the injection sequence of the Mazda 626 2.0?

The injection sequence for the Mazda 626 2.0 (1984–1987) is 1-3-4-2.

What glow plugs does the Mazda 626 2.0 use?

Glow plugs for the Mazda 626 2.0 (1984–1987): Beru 705 MJ, Bosch 0 250 202 056, Champion CH97 and Lucas/CAV HDS241.

How much oil does the Mazda 626 2.0 take?

The Mazda 626 2.0 (1984–1987) takes 6.8 litres of engine oil with the filter. See the reference table for the complete engine oil entries and their conditions.

What are the valve clearances for the Mazda 626 2.0?

Valve clearances for the Mazda 626 2.0 (1984–1987) are 0,25 mm inlet and 0,35 mm exhaust, measured cold.

What is the cylinder head torque for the Mazda 626 2.0?

The cylinder head bolts on the Mazda 626 2.0 (1984–1987) are tightened in 3 stages: 29 Nm, then 90°, then a final 90°.

What is the minimum brake disc thickness for the Mazda 626 2.0?

Brake discs on the Mazda 626 2.0 (1984–1987) are replaced at a minimum thickness of 18 mm (ventilated) front and 8 mm rear.

More on the 626