ABBREVIATIONS
Reference symbol
iH
-H
Original word
Right Hand
Left Hand
Meaning
Right hand side
Left hand side
Front Front
Rear Rear
This refers to the part size used by the maker at the time of assembly
being the standard size.
STD
Standard
For parts that do not engage well anymore due to wear from long use,
or repeated disassembly, by replacing the part that is engaged by a
part of slightly larger dimensions, it's corresponding part can be
reused. These parts that have larger dimensions than STD, and are
referred to as
01s.
As with the OIS parts, by replacing the engaging part with one that has
a smaller hole, it's corresponding part can be reused. These parts that
have smaller dimensions than STD, and are referred to as UIS.
Over Size
UIS
Under Size
After Top Dead Center
Before Top Dead Center
ATDC
BTDC
After the top dead center point of the piston in the cylinder.
Before the top dead center point of the piston in the cylinder.
Refers to the intake system.
Refers to the exhaust system.
IN
EX
SST
Intake
Exhaust
Special Service Tool Special service tool
Torque Tightening torque
ASSY
SU BIASSY
Assembly
A part that consists of two or more single parts or sub-assembled parts
that have been assembled together into an intergrated whole.
Sub Assembly
A part in which two or more parts are joined together by welding,
casting, riveting etc.
WI
LWR
The following items are attached.
(Example: WI washer
...
With a washer attached)
Lower
Lower
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