Mazda 6 - Timing Chain, Chain Tensioner

B24
VALVE MECHANISM
TIMING CHAIN, CHAIN TENSIONER
A6E221112040T01
Structure
• The timing chain is the silent chain (link grounding type), by which the tapping noise caused by matching each
sprocket is reduced.
• Engine oil inside the engine front cover lubricates the timing chain and each sprocket. The pin part of the timing
chain is nitrite-treated to improve abrasion resistance.
Timing Chain Specification.
.
• The timing chain tensioner is the oil pressure type chain tensioner. The tension of the timing chain is kept
constant, using the oil pressure and the spring force in the chain tensioner.
• The tension of the timing chain is kept constant by the oil pressure and the piston spring force.
• The oil pressure type chain tensioner is configured with the following parts: Piston spring, which depresses the
tensioner arm, Check ball which maintains pressing in the tensioner arm.
ITEM L8 LF L3
Pitch size (mm {in}) 8 {0.32} 6.35 {0.25}
Pitch number 134 174
AME2211N002
1 Camshaft sprocket
2 Tensioner arm
3 Chain tensioner
4 Chain guide
5 Crankshaft sprocket
6Timing chain
7 Pitch size
8Pitch
9Link
AME2211N003