Mazda 6 - Valve, Valve Spring, Valve Seal, Valve Guide

VALVE MECHANISM
B25
B
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VALVE, VALVE SPRING, VALVE SEAL, VALVE GUIDE
A6E221112111T02
Structure
• The valves are heat-resistant steel. There are two intake valves, two exhaust valves per No.1 cylinder.
VALVE SPEC.
• The intake valve and the exhaust valve are treated with the tufftride process to improve abrasion resistance.
• The valve spring is an uneven outer dimension type. It has been improved by reducing the size of the upper
seat.
• The valve guide is made of the sintered alloy to improve abrasion resistance.
• The valve seat is integrated with the lower valve spring seat to simplify the unit and improve its serviceability.
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1 Hole for a rachet lock
2 Oil supply hole
3Check ball
4 Piston spring
5Piston
6Rack
7 Ratchet
8 Ratchet spring
9 Cross-section
ITEM L8 LF L3
Valve full length (mm {in})
Intake valve: About 101.6 {4.000}
Exhaust valve: About102.6 {4.039}
Intake valve umbrella diameter (mm {in}) About 32.5 {1.28} About 35 {1.38}
Exhaust valve umbrella diameter (mm {in})
About 28
{1.10}
About 30 {1.18}
Stem diameter (mm {in})
Intake valve: About 5.5 {0.22}
Exhaust valve: About 5.5 {0.22}
1 Valve keeper
2 Upper valve spring seat
3Valve spring
4Valve seal
5 Valve guide
6Valve
AME2211N008