Removal Procedure
- Disconnect the negative battery cable.
- Remove the front cover. Refer to
Engine Front Cover Replacement
.
- Remove
the camshaft cover assembly. Refer to
Camshaft Cover Replacement
.
- Remove the timing chain. Refer to
Camshaft Timing Chain, Sprocket, and Tensioner Replacement
.
- Remove the balance shaft drive chain tensioner.
- Remove the adjustable balance shaft chain
guide.
- Remove the small balance shaft chain guide.
- Remove the upper balance shaft chain guide.
Important: Push on the chain between the water pump
and the camshaft sprockets so that all of the slack is between these 2 points.
This will allow easier removal of the chain.
- Remove the balance shaft drive chain.
- Remove the crankshaft drive sprocket.
Important: Replace the balance shaft drive chain guide
if wear exceeds 1.12 mm (0.045 in).
- Inspect the balance shaft drive chain guides for cracking or wear.
Important: Replace the balance shaft drive chain tensioner
shoe if wear exceeds 1.12 mm (0.045 in).
- Inspect the balance shaft drive chain tensioner shoe for excessive wear.
- Inspect the balance shaft drive chain and sprockets for wear.
- Inspect the camshaft sprocket faces for signs of movement.
- Inspect the alignment notch in the camshaft for cracking or damage.
- Inspect the water pump, crankshaft, and balance shaft sprocket teeth and
chain for signs of excessive wear, chipping, or seizure of the balance shaft drive
chain links.
Installation Procedure
Important: If the balance shafts are not correctly timed
to the crankshaft the engine may vibrate or make excessive noise.
- Orient the timing marks on the balance shafts.
1.1. | The intake side balance shaft timing mark should be pointing up. |
1.2. | The exhaust side balance shaft timing mark should be pointing down. |
- With the balance shafts oriented, install the balance shaft crankcase
sprocket onto the crankshaft.
Important: The crankshaft keyway slot will be pointing
up (12 o'clock position) when set at TDC.
- Place the number 1 piston at top dead center (TDC).
- Install the balance shaft chain with the
colored links lined up with the marks on the balance shaft sprockets with the mark
on the crankshaft sprocket.
| Important: There is 1 copper link (1)
and 2 chrome links (2) on the balance shaft chain.
|
4.1. | Orient the chain so that the copper (1) and chrome (2) links are
visible. |
4.2. | Place the copper colored link (1) onto the timing mark on the intake
side balance shaft sprocket. |
4.3. | Working clockwise along the chain, place the first chrome link in line
with the timing mark on the crankshaft sprocket. |
4.4. | Align the last chrome link with the timing mark on the exhaust side balance
shaft sprocket. |
- Install the upper chain guide and bolt.
Tighten
Tighten the balance shaft chain guide (upper) bolts
to 10 N·m (89 lb in).
- Install the small chain guide and bolt.
- Tighten the chain guide bolt.
Tighten
Tighten the balance shaft chain guide (fixed) bolts
to 10 N·m (89 lb in).
- Install the adjustable chain guide and bolts.
Tighten
Tighten the balance shaft chain guide (adjustable)
bolt to 10 N·m (89 lb in).
- Rotate the plunger on the chain tensioner
90°. Compress the plunger and lock in place by inserting a thin wire, or paper
clip, into the hole on the side of the plunger body.
- Install the balance shaft drive chain tensioner and bolts.
- Tighten the balance shaft drive chain tensioner bolts.
Tighten
Tighten the balance shaft chain tensioner bolts
to 10 N·m (89 lb in).
- Remove the thin wire or paper clip from the chain tensioner to release
the plunger.
- Install the timing chain. Refer to
Camshaft Timing Chain, Sprocket, and Tensioner Replacement
.
- Install
the camshaft cover. Refer to
Camshaft Cover Replacement
.
Tighten
Tighten the camshaft cover bolts to 10 N·m
(89 lb in).
- Install the front cover. Refer to
Engine Front Cover Replacement
.
- Connect the negative battery cable.
Tighten
Tighten the battery terminal bolts to 17 N·m
(13 lb ft).