Downloaded from www.Manualslib.com manuals search engine 0A-3 General Information:
There are two kinds of colored wire used in this vehicle. One is single-colored wire and the other is dual-colored
(striped) wire.
The single-colored wire uses only one color symbol (i.e. “GRN”).
The dual-colored wire uses two color sy mbols (i.e. “GRN/YEL”). The first symbo l represents the base color of the wire
(“GRN” in the figure) and the second symbol represents the color of the stripe (“YEL” in the figure).
Fasteners InformationS7RS0B0101004
Metric Fasteners
Most of the fasteners used for this vehicle are JIS-
defined and ISO-defined metric fasteners. When
replacing any fasteners, it is most important that
replacement fasteners be the correct diameter, thread
pitch and strength.
CAUTION!
Even when the nominal diameter (1) of thread
is the same, the thread pitch (2) or the width
across flats (3) may vary between ISO and
JIS. Refer to JIS-TO-ISO Main Fasteners
Comparison Table below for the difference.
Installing a mismatched bolt or nut will cause
damage to the thread.
Before installing, check the thread pitch for
correct matching and then tighten it by hand
temporarily. If it is tight, recheck the thread
pitch.
JIS-TO-ISO Main Fasteners Comparison Table Fastener Strength Identification
Most commonly used metric fastener strength property
classes are 4T, 6.8, 7T, 8.8 and radial line with the class
identification embossed on the head of each bolt. Some
metric nuts will be marked with punch, 6 or 8 mark
strength identification on the nut face. Figure shows the
different strength markings.
When replacing metric fasteners, be careful to use bolts
and nuts of the same strength or greater than the original
fasteners (the same number marking or higher). It is
likewise important to select replacement fasteners of the
correct diameter and thread
pitch. Correct replacement
bolts and nuts are available through the parts division.
Metric bolts: Identification class numbers or marks
correspond to bolt strength (increasing numbers
represent increasing strength).
I2RH01010010-01
Nominal diameter
M6 M8 M10 M12 M14
JIS Thread pitch 1.0 1.25 1.25 1.25 1.5
Width across flats 10 12 14 17 19
ISO Thread pitch 1.0 1.25 1.5 1.5 1.5
Width across flats 10 13 16 18 21
I4RH0A010005-01
1. Nut strength identification
I5RH01010001-01
Downloaded from www.Manualslib.com manuals search engine 1A-42 Engine General Information and Diagnosis:
Engine noise – Piston,
ring and cylinder noise
NOTE
Before checking
mechanical noise, make
sure that:
• Specified spark plug is used.
• Specified fuel is used.
Worn piston, ring and cylinder bore “Cylinders, Pistons and Piston Rings
Inspection in Section 1D”
Engine noise –
Connecting rod noise
NOTE
Before checking
mechanical noise, make
sure that:
• Specified spark plug is used.
• Specified fuel is used.
Worn piston, ring and cylinder bore “Cylinders, Pistons and Piston Rings
Inspection in Section 1D”
Worn rod bearing “Crank Pin and Connecting Rod Bearings
Inspection in Section 1D”
Worn crank pin “Crank Pin and Connecting Rod Bearings
Inspection in Section 1D”
Loose connecting rod nuts “Pistons, Piston Rings, Connecting Rods and
Cylinders Removal and Installation in Section
1D”
Low oil pressure Condition “Low oil pressure”
Engine noise –
Crankshaft noise
NOTE
Before checking
mechanical noise, make
sure that:
• Specified spark plug is used.
• Specified fuel is used.
Low oil pressure Condition “Low oil pressure”
Worn bearing “Main Bearings Inspection in Section 1D”
Worn crankshaft journal “Crankshaft Inspection in Section 1D”
Loose bearing cap bolts “Main Bearings, Crankshaft and Cylinder Block
Removal and Installation in Section 1D”
Excessive crankshaft thrust play “Crankshaft Inspection in Section 1D”
Engine overheating Inoperative thermostat “Thermostat Inspection in Section 1F”
Poor water pump performance “Water Pump Inspection in Section 1F”
Clogged or leaky radiator “Radiator On-Vehicle Inspection and Cleaning
in Section 1F”
Improper engine oil grade “Engine Oil and Filter Change in Section 0B”
Clogged oil filter or oil strainer “Oil Pressure Check in Section 1E”
Poor oil pump performance “Oil Pressure Check in Section 1E”
Faulty radiator cooling fan control
system “Radiator Cooling Fan Low Speed Control
System Check” or “Rad
iator Cooling Fan High
Speed Control System Check”
Dragging brakes Condition “Dragging brakes” in “Brakes
Symptom Diagnosis in Section 4A”
Slipping clutch Condition “Slipping clutch” in “Clutch System
Symptom Diagnosis in Section 5C”
Blown cylinder head gasket “Cylinder Head Inspection in Section 1D”
Air mixed in cooling system
Condition Possible cause Correction / Reference Item
