Camshaft Timing Chain
Camshaft Timing Chain
Special tools, testers and auxiliary items required
• Assembly Tool (T10352)
• Counter Hold Tool (T10355)
• Locking Pin (T40011)
• Lever (T40243)
• Locking Tool (T40267)
• Camshaft Clamp (T40271)
• Locking Pin (T10060 A)
Removing
- Remove timing chain upper cove. Refer to => [ Upper Timing Chain Cover ] Upper Timing Chain Cover.
The control valve has a left thread.
- Remove the control valve using the (T10352) or assembly tool (T10352/1) in direction of - arrow - depending on the version.
- Remove the bolts - arrows - and remove the bearing bracket.
- Rotate the vibration damper using the (T10355) into the Top Dead Center (TDC) position.
• The notch on the vibration damper and the marking on the lower timing chain guard must be opposite one another - arrow -.
• The markings - 1 - on the camshafts must point upward.
- Remove the lower timing chain cover. Refer to => [ Lower Timing Chain Guard Section ] Lower Timing Chain Guard Section.
- Press the oil pump chain tensioner in the direction of the - arrow - and secure it with a (T40011).
- Remove the oil pump chain tensioner - 1 -.
- Remove the drive chain for the oil pump.
- Remove the bolts - arrows -.
Two Different Chain Tensioners May be Installed Depending on the Version
Version 1
- Install the (T40243) - arrows -.
- Lift the chain tensioner locking wedge by inserting a scriber or a suitable screwdriver into the hole in the chain tensioner in the direction of the - arrow 1 - and hold it there.
- Slowly press and hold the (T40243) in the direction of - arrow 2 -.
- Secure the chain tensioner using (T40011).
Version 2
- Install the (T40243) - arrows -.
- Press the chain tensioner locking ring - 1 - together and hold it.
- Slowly press and hold the (T40243) in the direction of the - arrow -.
- Secure the chain tensioner with the (T40267).
All Versions
- Remove the (T40243).
- Bolt the camshaft locating tool (T40271/2) to the cylinder head and push the chain sprocket splines in the direction of the - arrow 2 -. If necessary, turn the intake camshaft with a wrench in the direction of the - arrow 1 -.
- Remove the timing chain tensioning rail - 2 -.
- Attach the (T40271/1) to the cylinder head.
- Turn the exhaust camshaft with the wrench in the direction of the - arrow 1 - and slide the camshaft locating tool (T40271/1) in the chain sprocket splines in the direction of the - arrow 2 -.
- Remove the upper guide track - 1 - by unlocking the latch with a screwdriver and pushing the guide track forward.
- Remove the guide rail for the camshaft timing chain - 1 -.
- Remove the timing chain.
Installing
• Tightening specifications, refer to => [ Camshaft Timing Chain Overview ] Camshaft Timing Chain Overview.
• The painted links of the timing chain must be positioned on the markings on the chain sprockets.
- Mount the timing chain on the intake camshaft.
- Mount the timing chain on the exhaust camshaft.
- Lay the timing chain on the crankshaft and hold it there.
- Install the camshaft timing chain guide rail and tighten the bolts - 1 -.
- Install the upper glide track - 1 -.
- Turn the exhaust camshaft in the direction of the - arrow 1 -, slide out the camshaft locating tool (T40271/1) from the chain sprocket splines in the direction of the - arrow 2 - and release the camshaft.
- Remove the (T40271/1).
- Install the timing chain tensioning rail and tighten the bolt - 2 -.
- Turn the intake camshaft in the direction of the - arrow 1 -, slide out the camshaft locating tool (T40271/2) from the chain sprocket splines in the direction of the - arrow 2 - and release the camshaft.
- Remove the (T40271/2).
- Check that the position of the colored chain link is aligned to the markings.
- Install the drive chain for the oil pump and the chain tensioner. Tighten the bolt - 1 - and remove the (T40011).
- Install the bolts - arrows - and tighten them.
- Mount the bearing bracket and the bolts - arrows - hand-tight.
- Remove the (T40011) or the (T40267) , depending on the version.
- Tighten the bolts - arrows -. Refer to => [ Camshaft Timing Chain Overview ] Camshaft Timing Chain Overview.
- Install the control valve - item 6 - => [ (Item 6) Control Valve ] Camshaft Timing Chain Overview.
Further installation is performed in reverse order of removal, noting the following:
- Install the lower timing chain cover. Refer to => [ Lower Timing Chain Guard Section ] Lower Timing Chain Guard Section.
- Install the timing chain guard upper section. Refer to => [ Upper Timing Chain Cover ] Upper Timing Chain Cover.
- Install the ribbed belt tensioning damper. Refer to => [ Ribbed Belt Tensioning Damper ] Service and Repair.
- Install the ribbed belt. Refer to => [ Ribbed Belt ] Ribbed Belt.
- Adjust the subframe mount. Refer to => [ Subframe Mount, Adjusting ] Adjustments.