Balance Shaft Chain Tensioner: Service and Repair

Balance Chain Tensioner Replacement

Removal Procedure

1. Remove the crankshaft rear oil seal housing. Refer to Crankshaft Rear Oil Seal and Housing Replacement (Service and Repair).





Important: Do Not disassemble the balance shaft assemblies. Remove and install the balance shafts as complete assemblies.


2. Rotate the crankshaft until the left hand balance shaft sprocket timing mark (1) is at 12:00 position.

1. The right hand balance shaft sprocket timing mark (3) should be at 2:30 position.
2. The crankshaft dowel pin hole (2) is at 11:00, and the crankshaft sprocket mark (4) should be at 4:30 position.
3. Make sure the 3 timing marks on the sprockets line up with a dark link on the chain.
4. Every 11 crankshaft rotations, 3 of the 5 dark links on the chain will line up with the timing marks.




3. Remove the balance shaft chain tensioner bolts.
4. Remove the balance shaft chain tensioner.

Installation Procedure




1. Collapse the balance shaft chain tensioner using the following procedure:

1. Rotate the ratchet release lever (2) clockwise and hold.
2. Collapse the tensioner shoe (1) and hold.
3. Release the ratchet lever.

2. Slowly release the pressure on the shoe, until the ratchet lever moves to the first detent and a "click" is heard and felt.




3. Insert a pin through the hole in the release lever in order to lock the tensioner shoe in the collapsed position.





Caution: Refer to Fastener Caution (Fastener Caution).

Note: Ensure the tensioner release lever is facing outward.

4. Install the balance shaft chain tensioner and bolts and tighten the bolts to 10 Nm (89 lb in).
5. Remove the pin holding the tensioner to tighten any slack in the balance shaft drive chain.





Important: Do Not disassemble the balance shaft assemblies. Remove and install the balance shafts as complete assemblies.


6. Verify the correct timing chain and timing mark alignments:

1. The left hand balance shaft sprocket timing mark (1) is at the 12:00 position
2. The right hand balance shaft sprocket timing mark (3) should be at 2:30 position.
3. The crankshaft dowel pin hole (2) is at 11:00, and the crankshaft sprocket mark (4) should be at 4:30 position.
4. The 3 timing marks on the sprockets line up with a dark link on the chain.
5. Every 11 crankshaft rotations, 3 of the 5 dark links on the chain will line up with the timing marks.

7. Install the crankshaft rear oil seal housing. Refer to Crankshaft Rear Oil Seal and Housing Replacement (Service and Repair).