Balance Shaft Module With Oil Pump

Special tools and workshop equipment required 

• Connecting Pin T10027 A

Removing 

-- Remove oil pan. Refer to OIL PAN .

-- 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 1: Bringing Camshaft Gear To Marking For TDC Cylinder 1

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

Fig 2: Disengage Locking Lugs

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

Fig 3: Identifying Bolt Loosened From Chain Sprocket Of Oil Pump

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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 4: Identifying Screwdriver And 3 mm Allen Key To Relieve Tension On Chain Rail And Lock Rail

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

Fig 5: Identifying Removal Of Chain Sprocket Of Oil Pump And Removal Of Chain On Differential Shaft Drive

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-- Remove the bolts -1 and 2- and the oil baffle.

Fig 6: Identifying Windage Tray Bolts

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

Fig 7: Balance Shaft Housing Bolt Tightening Sequence

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Installing 

• For the correct tightening specifications, refer to BALANCE SHAFT MODULE WITH OIL PUMP OVERVIEW 
• Chain tensioner tensioned, refer to CHAIN TENSIONER, TENSIONING 

-- Replace all balance shaft assembly bolts.

-- Replace balance shaft assembly bolt gasket  BALANCE SHAFT MODULE WITH OIL PUMP OVERVIEW.

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

Fig 8: Identifying Intermediate Plate Placed On Alignment Bushings Of Differential Shaft Gear

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

Fig 9: Balance Shaft Housing Bolt Tightening Sequence

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-- Install oil baffle and insert pins in balance shaft module -arrows-.

Fig 10: Identifying Windage Tray Bolts

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-- Bring the engine to TDC at cylinder 1 by turning the crankshaft in the direction of engine rotation at the crankshaft toothed belt sprocket center bolt. The markings on the camshaft sprocket and the crankshaft must be positioned at cylinder 1 TDC -arrows-.

Fig 11: Bringing Camshaft Gear To Marking For TDC Cylinder 1

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-- Set marking on chain sprocket of differential shaft -arrow- opposite alignment bore. Secure chain sprocket in this position using the T10027 A. Place chain on to differential shaft chain sprocket.

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

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-- Install oil pump chain sprocket with a new bolt and tighten bolt by hand.

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

Fig 13: Identifying Screwdriver And 3 mm Allen Key To Relieve Tension On Chain Rail And Lock Rail

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Assemble in reverse order of disassembly.

-- Install oil pan. Refer to OIL PAN .