Oil Pump, Removing And Installing

WARNING: This page is about a different car, the 2023 Volkswagen Atlas. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Torque Wrench, 6-50Nm:VAG 1331A

Fig 1: Identifying Torque Wrench
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Counterhold:T10587

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Procedure:

-- Remove the transmission. Refer to TRANSMISSION, REMOVING .

-- Remove the drive plate. Refer to DRIVE PLATE, REMOVING AND INSTALLING .

-- Remove the transmission side sealing flange. Refer to SEALING FLANGE, REMOVING AND INSTALLING, TRANSMISSION SIDE .

-- Turn the engine on the vibration damper to the adjusting markings.

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The milled drive chain sprocket tooth -A- must align with the bearing joint.
The marking on the chain sprocket -arrow- must align with the marking on the oil pump.

NOTE:

This position is only reached at every fourth turn.

-- Mark the position of the timing chain -A- to the oil pump chain sprocket -arrow- with a waterproof marker.

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-- Remove the chain tensioner for the camshaft timing chain -arrow-.

Fig 2: Chain Tensioner Bolt Camshaft Roller Chain

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-- Press the chain tensioner together and disconnect with a 3 mm hex socket wrench -A-.

Fig 3: Hex Wrench

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-- Remove the tensioner for the oil pump drive chain -arrows-.

-- Position the Counterhold:T10587/1 -(A)- with :T10587/2 -(B)- as shown on the oil pump chain sprocket and on the cylinder block.

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-- Loosen the chain sprocket bolt -arrow-.

-- Remove the Counterhold:T10587 .

-- Remove the bolt all the way and remove the chain sprocket from the oil pump.

-- Remove the chains from the chain sprocket.

-- Remove the bolts for the oil pump -1 to 6-.

Fig 4: Oil Pump Bolts Tightening Sequence

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-- Remove the oil pump evenly from the tabs -arrows-.

Fig 5: Identifying Oil Pump Retaining Tabs

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Installing:

Fig 6: Oil Pump Bolts Tightening Sequence

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-- Replace the O-ring for the oil pump.

-- Install the oil pump without tilting!

-- Use locking fluid when installing the oil pump bolts.

-- Tighten the bolts in the following sequence: -1 through 6-. Tightening specification. Refer to OVERVIEW - OIL PAN/OIL PUMP.

-- Check the crankshaft position.

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The milled drive chain sprocket tooth -A- must align with the bearing joint.

-- Turn the oil pump shaft -1- upward with the flat side -arrow- horizontal.

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-- Insert the large chain sprocket -1- into the drive chain so that the marking -arrow- is aligned with the marking on the oil pump.

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-- If the chain sprocket cannot be installed, rotate the oil pump shaft slightly.

-- Carefully remove the chain sprocket from the oil pump and tilt it slightly upward. Install the camshaft timing chain in this position. The markings made during removal must align.

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-- Reinstall the chain sprocket on the oil pump shaft and tighten by hand.

-- Install the lower chain tensioner and tighten with 8 Nm -arrows-.

Fig 7: Hex Wrench

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-- Remove the hex socket wrench -A-.

-- Install the chain tensioner for camshaft timing chain -arrow-.

Fig 8: Chain Tensioner Bolt Camshaft Roller Chain

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-- Check the markings one more time.

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The milled drive chain sprocket tooth -A- must align with the bearing joint.
The marked hole -arrow- must be aligned with the marking on the oil pump.
The markings made during removal must align.

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-- Position the Counterhold:T10587 on the chain sprocket as shown.

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-- Tighten the chain sprocket bolt -arrow-. Tightening specification. Refer to OVERVIEW - OIL PAN/OIL PUMP.

-- Remove the Counterhold:T10587 .

-- Install the sealing flange on the transmission side. Refer to Installing: .

Further assembly is performed in reverse order.

Tightening Specifications:

Refer to OVERVIEW - OIL PAN/OIL PUMP