Balance Shaft, Removing And Installing, Intake Side: Installing

• The intake side balance shaft must be replaced after removal.
• Because of the small play between the balance shaft and cylinder block, the balance shaft may need to be cooled in order to install it. Check if the balance shaft can be inserted into the cylinder block without forcing it in. If this is not the case, then the balance shaft must be installed cooled.

-- Place the new balance shaft in a freezer for 30 minutes or spray it with commercially available cooling spray.

-- Lubricate the balance shaft bearing with engine oil.

-- Install the new intake camshaft balance shaft and tighten the bolt -2-.

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-- Coat the new O-ring -1- with engine oil.

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-- Coat the mounting pin with engine oil and insert.

• The alignment pin -arrow- for the bearing pins must engage in the hole in the cylinder block.

TIP: 

The new intermediate sprocket has an anti-friction coating that wears off after a short period of use, which automatically adjusts the backlash.

-- Mark the tooth flank on the intermediate sprocket with a color -arrow-.

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-- Install the intermediate sprocket; the marking on the balance shaft must be between the markings on the tooth flanks.

-- Tighten the bolt -1- for the intermediate sprocket. Refer to the illustration below or the tightening sequence.

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-- Check the markings on the intermediate sprocket/balance shaft -arrow-.

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Further installation is performed in reverse order of removal, while noting the following:

-- Install the balance shaft drive chain. Refer to BALANCE SHAFT DRIVE CHAIN, REMOVING AND INSTALLING .

-- Replace the balance shaft intake side seal. Refer to BALANCE SHAFT SEAL, REPLACING, INTAKE SIDE .

-- Install the coolant pump toothed belt. Refer to COOLANT PUMP TOOTHED BELT, REMOVING AND INSTALLING .