Oil Pump With Balance Shaft Drive: Notes

WARNING: This page is about a different variant/trim than selected.

Special tools and workshop equipment required

Connecting Pin T10027
Silicone Sealant D 176 404 A2

Removing

-- Remove the oil pan. Refer to OIL PAN .

-- Remove the chain guard. Disengage the locking lugs through the openings -arrows- if necessary using a small screwdriver.

Fig 1: Disengage Locking Lugs

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-- Rotate the crankshaft to set cylinder 1 at Top Dead Center (TDC).

Fig 2: Identifying Cylinder 1 At TDC

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NOTE:

Make sure there is a mark on the balance shaft chain sprocket opposite the securing hole -arrow-. Mark the position with a waterproof marker if the mark is missing. The mark will be needed later when installing.

Fig 3: Making Sure There Is A Mark On Balance Shaft Chain Sprocket Opposite Securing Hole

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-- Loosen the oil pump chain sprocket bolt. Counter hold the center bolt for the vibration damper.

Fig 4: Loosening Bolt From Chain Sprocket Of Oil Pump

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CAUTION:

The chain sprocket driving the balance shafts must not be loosened!

-- Release the tension on the chain rail using a screwdriver -arrow- and secure it using a 3 mm hex wrench -1-, across flats.

Fig 5: Relieving Tension On Chain Rail With Screwdriver And Lock Rail With 3 mm Allen Key

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-- Remove the oil pump chain sprocket and disengage the chain from the balance shaft drive.

Fig 6: Removing Chain Sprocket Of Oil Pump And Disengaging Chain On Differential Shaft Drive

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-- Loosen the balance shaft drive bolts working from the outside toward the inside and remove it. Oil pump with balance shaft drive overview. Refer to OIL PUMP WITH BALANCE SHAFT DRIVE .

Fig 7: Identifying Bolts Of Balancer Shaft Assembly

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Installing and Adjusting

Chain tensioner is pre-loaded. Refer to CHAIN TENSIONER, PRETENSIONING .

-- Place the intermediate plate as shown onto the alignment bushings -arrows- in the balance shaft drive.

Fig 8: Placing Intermediate Plate On To Alignment Bushings Of Differential Shaft Gear

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-- Install the oil pump with balance shaft drive and intermediate plate. Tighten the bolts working from the inside toward outside to 15 Nm + 90° (1/4) additional turn.

Fig 9: Identifying Bolts Of Balancer Shaft Assembly

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NOTE:

Note the different length of the bolts. Refer to Fig 14.

-- Rotate the crankshaft to set cylinder 1 to TDC.

Fig 10: Identifying Cylinder 1 At TDC

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-- Set the mark on the balance shaft chain sprocket -arrow- opposite the alignment bore.

Fig 11: Making Sure There Is A Mark On Balance Shaft Chain Sprocket Opposite Securing Hole

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

-- Secure the chain sprocket in this position using the connecting pin T10027. Place the chain onto the balance shaft chain sprocket.

Fig 12: Aligning Mark At Chain Sprocket Of Balancer Shaft With Fixture Hole

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-- Install the oil pump chain sprocket and tighten the bolt by hand.

NOTE:

The oil pump chain sprocket fits only in one position. To install, only the oil pump must be turned.

-- Remove the connecting pin T10027 and 3 mm hex wrench -1-. Secure the oil pump chain sprocket. Tightening specification: 20 Nm + 90° (1/4) additional turn. Counter hold the vibration damper center bolt.

Fig 13: Relieving Tension On Chain Rail With Screwdriver And Lock Rail With 3 mm Allen Key

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

-- Install the oil pan. Refer to OIL PAN .

Further installation is in the reverse order of removal.

Balance Shaft Drive Bolt Allocation

Fig 14: Bolt Allocation Of Differential Shaft Gear

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A - M7 x 40 hex collar bolt

B - M7 x 70 hex collar bolt

C - M7 x 90 hex collar bolt

D - M7 x 55 hex collar bolt

E - Sealing plug with O-ring