TIMING CHAIN, CHAIN TENSIONER CONSTRUCTION[ZJ, ZY, Z6]

id0110b1101200

•  A silent chain has been adopted for the timing chain to reduce noise caused when the timing chain is engaged with sprockets.
•  Engine oil inside the engine front cover lubricates the timing chain and each sprocket. The pin part of the timing chain has special surface processing to improve wear resistance.
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1
Camshaft sprocket
2
Tensioner arm
3
Chain guide
4
Chain tensioner
5
Crankshaft sprocket
6
Timing chain
7
Pin
8
Guide plate
9
Inner plate
10
Middle plate

•  A chain tensioner employing a ratchet in conjunction with hydraulic pressure has been adopted for the timing chain tensioner.
•  The tension of the timing chain is constantly maintained using oil pressure and spring force in the chain tensioner.
•  The chain tensioner is composed of a ratchet which controls the plunger movement when the engine is started, a plunger which presses the tensioner arm, a plunger spring, and a check ball which maintains hydraulic pressure.
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1
Check ball
2
Body
3
Cam spring
4
Ratchet
5
Plunger
6
Plunger spring
7
Stopper (attached to service part)
8
Link plate