SsangYong Actyon Sports II. Manual — part 16
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2) Timing Chain and Gear
(1) Timing chain
Simple layout: optimized timing, enhanced
NVH
Single stage layout: minimized chain load
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Chain upper bush
- Single bush type (112 EA)
Chain lower bush
- Single bush type (60 EA)
(2) Tensioner
Tensioner adjusts the chain tension to keep it tight during engine running. This reduces the wear in
guide rail and spoke.
Operating principle
- Use the spring tension in tensioner and hydraulic pressure
Tensioner type
- Compensation and impact absorbing
Static and dynamic force
- Spring + Hydraulic pressure
1.
2.
3.
Plunger
Housing
Spring
Check valve
Hydraulic tensioner assembly
▶
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Clamping guide rail
Installed between exhaust
Camshaft sprocket and
crankshaft sprocket
Tensioner guide rail
Installed between exhaust
Camshaft sprocket and
crankshaft sprocket
(3) Mechanical Tensioner Assembly
Operating principle
- Use only spring tension
Tensioner type
- Compensation and impact absorbing
Static and dynamic force
- Spring
(4) Guide rail
The guide rail is used for optimizing the movement of chain drive system. And it also prevents the chain
from contacting each other when the chain is loose, and reduces the chain wear.
The guide rail is made of plastic, nylon, Teflon, etc. The guide rail is specially required when the distance
between two spokes is too great. It pushes the chain with constant force so that the chain can work
smoothly. The guide rail is fitted by pins.
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Screw plug
Oil seal
Timing gear case cover
(5) Timing gear case cover
Timing gear case cover (TGCC)
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Features
Major function: Protecting the chain drive system, minor function: Shielding the chain noise.
Install crankshaft front seal and screw plug on the timing gear case cover.
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Do not touch the inner lip of crankshaft front seal.
Be careful not to damage the screw thread when removing the lock pin to release the chain
tensioner.
Be careful not to damage the O-ring when installing the screw plug.
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A671 997 01 46
Crankshaft front seal
Location of chain tensioner screw
plug
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