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1.Use special tool flywheel stopper (MB991883) to secure the drive plate
or flywheel.
2.Remove the drive plate bolts or flywheel bolt.
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1.
| caution |
Reliably secure the plunger of the chain tensioner with hard wire to prevent
it from jumping out of the main body.
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Push in the balancer shaft tensioner lever by hand and push in the plunger of the chain
tensioner until it contacts the bottom. Then, insert hard wire (piano wire, etc.) of Φ1.5 or
hexagonal bar wrench (1.5 mm) into the plunger fixing hole to secure.
2.Remove the balancer shaft chain tensioner.
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3.
| caution |
The balancer shaft module must not be disassembled because of assembly warranty.
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Remove the crankshaft sprocket, balancer chain and balancer shaft module as a unit.
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1.Pry the illustrated position with a screwdriver or tap the boss with a hammer.
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2.If the ladder frame does not come off, insert a flatblade screwdriver into the gap between
the ladder frame and bearing cap as shown in the illustration and lightly pry it to remove the
ladder frame.
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1.
| caution |
Be sure to remove liquid gasket that has entered mounting holes.
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Completely remove liquid gasket adhering to the cylinder block and ladder frame.
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2.
| caution |
Sufficiently check that there is no residual oil on the
place where degreasing is performed. If fingerprints are left, do not touch it with bare hands
after the degreasing, since the oils from your fingers will harm the seal ability.
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Using white gasoline and so on, degrease the surface where the liquid gasket is applied
and the contact surface between the cylinder block and ladder frame.
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3.Squeeze liquid gasket of Φ2.5 ± 0.5 mm in thickness and apply it to
the illustrated position of the ladder frame.
Specified sealant:
Three bond 1227D, Three bond 1217G (MITSUBISHI GENUINE PART 1000A923), Three bond
1207F (MITSUBISHI GENUINE PART MD970389), Loctite 5971, Loctite 5970, Loctite 5900 or equivalent
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4.Tighten the ladder frame to the specified torque of 26 ± 1 N·m in the
order shown in the illustration.
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When the new balancer shaft module is installed, supply oil to the oil pump and the balancer
shaft bearing in the balancer shaft module using the following procedures.
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- Clean the inside of the removed oil pan. Put the
balancer shaft module carefully into the oil pan so that the oil inlet can be upward.
- Pour the engine oil so that the two-third of the balancer module can be immersed.
- Also, pour approximate 50 cc of engine oil from the oil inlet.
- By giving four clockwise rotations or more to the balancer shaft sprocket, the oil
is supplied to the oil pump and the balancer shaft bearing.
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1.Wipe the dirt on the crankshaft sprocket and the crankshaft using a rag,
and then remove the grease from the portion shown in the illustration.
| note |
Remove grease to prevent a drop in the coefficient of friction of the pressing portion
caused by adhesion of oil.
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2.Align the timing mark of the balancer shaft module sprocket with that of the balancer
shaft module.
3.Insert a hexagonal bar wrench (3 mm) as illustrated to prevent the balancer shaft
module sprocket from moving.
4.Loop the balancer chain, aligning its link plate (orange) with the timing mark.
5.Install the crankshaft sprocket on the crankshaft.
| note |
Do not push in the crankshaft sprocket to the normal position. Push it in only up to the
tip of the crankshaft.
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6.While slanting the balancer shaft module, align the link plate (blue) of another balancer
chain with the timing mark of the crankshaft sprocket to loop. Gradually push in the crankshaft
sprocket and fit it into the key groove of the crankshaft. Then, install the balancer shaft
module on the ladder frame.
| note |
Make sure that the balancer shaft module is completely intimate contact with the ladder
frame.
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| note |
Make sure that the key groove of the crankshaft is aligned with the contact surface of
the cylinder block and ladder frame as shown in the illustration.
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7.Apply an appropriate and minimum amount of engine oil to the screw thread of the balancer
shaft module bolt.
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8.Tighten bolts to the specified torque of 20 N·m according to the assembly order
in the illustration, retighten them to 44 N·m, and then completely loosen them.
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9.After tightening them to the specified torque of 20 N·m again, use special tool
angle gauge (MB991614) to tighten them up to 135°.
10.Pull out the hexagonal bar wrench from the balancer module sprocket.
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11.Make sure that the respective timing mark is aligned with each other as illustrated.
12.Install the balancer chain tensioner lever and balancer chain guide.
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1.Attach the chain tensioner to the ladder frame.
2.
| caution |
Install the chain tensioner precisely in place after installing the tensioner
lever and chain guide to prevent the plunger of the chain tensioner from jumping out.
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Remove the hard wire (piano wire, etc.) of Φ1.5 or hexagonal bar wrench (1.5
mm) from the tensioner. This enables the plunger of the chain tensioner to push the balancer
shaft tensioner lever to keep the balancer shaft chain tight.
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After applying a small amount of engine oil to the oil seal lip, use special tool rear
oil seal installer (MD998718) to press fit the oil seal.
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1.Clean off sealant and oil of thread of crankshaft and drive plate bolts or flywheel
bolts.
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2.Use special tool flywheel stopper (MB991883) to secure the drive plate
or flywheel.
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3.Apply engine oil to thread of crankshaft and bolt seat area of drive plate or flywheel.
4.Apply the sealant to the thread of drive plate bolts or flywheel bolts.
Specified sealant:
Three bond 1324 or equivalent
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5.Tighten drive plate bolts or flywheel bolts to temporary torque of 40 N·m in
the order shown to illustration.
6.Tighten drive plate bolts or flywheel bolts to specified torque of 130 N·m
in the order shown in the illustration.
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