Balance shaft module with oil pump, removing and installing: Notes

Special tools, testers and auxiliary items required

Fig 1: Identifying Securing Pin T10027

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Connecting Pin T10027

Removing

Remove oil pan → Oil pan, removing and installing .

CAUTION: Only turn over the engine at the crankshaft in direction of engine rotation (clockwise).

NOTE:

Turning over the engine is performed at the center bolt of the crankshaft.

Fig 2: Setting Crankshaft And Camshaft To TDC At Cylinder 1

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Bring camshaft gear to marking for TDC cylinder 1 by turning crankshaft. Marking on camshaft gear must align with arrow on toothed belt guard.

Fig 3: Disengaging Locking Lugs Through Openings

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

Fig 4: Locating Bolt From Chain Sprocket Of Oil Pump

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

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

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

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

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Remove chain sprocket of oil pump and disengage chain on differential shaft drive.

Fig 7: Removing/Installing Oil Baffle & Bolts

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Remove oil baffle, removing bolts - 1 and 2 -.

Fig 8: Removing Bolts From Balance Shaft Assembly

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Remove bolts - arrows - from balance shaft assembly from outside to inside and remove it.

Installing

Chain tensioner pre-tensioned

Replace all balance shaft assembly bolts.
Replace balance shaft assembly bolt gasket.

Fig 9: Placing Intermediate Plate On To Alignment Bushings Of Differential Shaft Gear

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Place intermediate plate as shown on to alignment bushings of differential shaft gear - arrows -.

Fig 10: Removing Bolts From Balance Shaft Assembly

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Install balance shaft assembly with oil pump and intermediate plate. Tighten bolts - arrows - from inside toward outside.

NOTE:

Observe the different lengths of bolts. Bolt allocation for balance shaft housing

NOTE:

Pay attention to centering sleeves.

Tightening sequence
1st Step	Hand-tight
2nd Step	15 Nm ¹⁾
3rd Step	90 ° additional turn ²⁾
¹⁾ Replace bolt or nut ²⁾ 90° Corresponds to a 1/4 turn

Fig 11: Removing/Installing Oil Baffle & Bolts

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Install oil baffle, thereby inserting tabs into balance shaft assembly - arrows - and tightening bolt - 1 - to 21 Nm and bolts - 2 - to 9 Nm.

NOTE:

Turning over engine is performed at the center bolt of the crankshaft.

Fig 12: Setting Crankshaft And Camshaft To TDC At Cylinder 1

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Set engine to TDC at cyl. 1, by turning crankshaft in engine running direction at the central bolt of the crankshaft toothed belt sprocket. Marking on camshaft sprocket and marking on crankshaft must be positioned at TDC for cyl. 1 - arrows -.

Fig 13: Aligning Mark At Chain Sprocket Of Balancer Shaft With Fixture Hole

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Set marking on chain sprocket of differential shaft - arrow - opposite alignment bore. Secure chain sprocket in this position using connecting pin T10027. Place chain on to differential shaft chain sprocket.
Install oil pump chain sprocket with new bolt and tighten bolt by hand.

NOTE:

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

Fig 14: Relieving Tension On Chain Rail With Screwdriver And Lock Rail With 3 mm Allen Key

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Remove connecting pin T10027 and Allen wrench - 1 -. Secure chain sprocket of oil pump. Counter-hold at center bolt for vibration damper.

The rest of assembly is basically a reverse of disassembling sequence.

Install oil pan → Oil pan, removing and installing .