Oil Pump Drive Timing Chain, Installing
Oil Pump Drive Timing Chain, Installing
• Work sequence only possible when engine is removed from engine compartment!
Special tools, testers and auxiliary items required
• Camshaft bar (T10068 A)
• Counter-holder tool (T10069)
• Torque wrench (VAG 1331)
• Torque wrench (VAG 1332)
• Adjustment tool (T10332) (for vehicles without mechanical vacuum pump)
• Adjustment tool (T10363) (for vehicles with mechanical vacuum pump)
• Sealant (D 176 501 A1)
Procedure
CAUTION!
When doing any repair work, especially in the engine compartment, pay attention to the following due to clearance issues:
• Route lines of all types (e.g. for fuel, hydraulic, Evaporative Emission (EVAP) canister system, coolant and refrigerant, brake fluid, vacuum) and electrical wiring so that the original path is followed.
• Ensure sufficient clearance to all moving or hot components.
• The following work sequence is described with engine removed. The adjustments required depend on how far the engine has been disassembled. Oil pan is removed and must only be installed after assembling sealing flange.
Install the timing chain and the chain tensioner with tensioning plate for the oil pump drive
- First set crankshaft to Top Dead Center (TDC) cylinder 1. To do so, milled tooth of drive pinion - arrow - must align with bearing separating gap.
- Install both bolts without collar for guide rail and tighten to 10 Nm. Place the guide rail on the bolts.
- Now set oil pump shaft - 1 - with flat side - arrow - horizontal to marking - 2 - on oil pump.
• Note direction of rotation of used timing chain, refer to --> [ Identifying the Timing Chain ] Timing Chains and Adjusters Assembly Overview
- Install the timing change into the guide rail and mount it on to the crankshaft.
- Install the large chain sprocket into the timing chain so that the tab on the chain sprocket aligns with the marking on the cylinder block - B -.
- Mount the chain sprocket on to the intermediate shaft.
During installation make sure that the timing chain runs completely straight in the guide rail from the crankshaft to the intermediate shaft.
• Milled drive chain sprocket tooth must align with bearing joint - arrow A -.
• The tab on the intermediate shaft timing chain sprocket must align with the marking - arrow B - behind it.
- If large chain sprocket cannot be installed, rotate the oil pump slightly.
- Now mount the chain tensioner.
- Release locking splines of chain tensioner - A - with a small screwdriver and tensioning rail pressed against chain tensioner.
- Install the chain tensioner in this position and tighten to 8 Nm - arrow -.
- If cylinder head has been removed, install it now. Refer to --> [ Cylinder Head ] Cylinder Head.
- Insert thecamshaft bar (T10068 A) into both shaft grooves.
- Now guide drive chain for camshafts and high pressure pump through opening in cylinder head or cylinder head gasket from above.
- Insert small drive pinion with installed chain into recess - arrow - and bolt it on hand tight.
- Lock vibration damper using counter holder tool (T10069).
- With a new bolt, tighten both chain sprockets on oil pump shaft to 60 Nm, then turn an additional 1/4 (90°). (90°) further only use bolts with strength category 10.9
• Be aware that all chain sprocket bolts must be replaced.
- Insert guide rail - 2 - through opening in cylinder head and secure it tightly with bolts - 1 - and - 3 -.
- Insert guide rail - 4 - and secure it tightly on cylinder block with pivot pin- 5 -.
Without Mechanical Vacuum Pump
- Coat the needle bearing inside the drive pinion - 2 - with clean engine oil.
Continuation for All
- Position the drive pinion with the chain in place in its thrust bearing. Make sure the chain lies taut on the guide rail. Now slide in the bearing shaft - 3 -.
• Vehicles without mechanical vacuum pump: The notch - arrow - must face upward.
• Vehicles with mechanical vacuum pump: The marking on the on high pressure drive cams must be at the top. The input shaft only fits into the drive pinion in one position. Coat the input shaft splines.
- Make sure that alignment bushing - 1 - is inserted. It is used to secure the adjustment tool.
Without Mechanical Vacuum Pump
- Also secure position of drive pinion for high pressure pump using adjustment tool (T10332).
With Mechanical Vacuum Pump
- Also secure position of drive pinion for high pressure pump using adjustment tool (T10363). The marking - A - on the on high pressure drive cams must be at the top.
Continuation for All
Install camshaft adjusters. Refer to --> [ First install camshaft adjuster for intake camshaft as follows ] Camshaft Adjuster with Camshaft Drive Timing Chain, Installing.