Crankshaft Sprocket/Balancer Chain/Balancer Shaft Module Installation

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.

1. 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.
2. Pour the engine oil so that the two-third of the balancer module can be immersed.
3. Also, pour approximate 50 cm³ (3.1 cu in) of engine oil from the oil inlet.
4. 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.
   Fig 1: Pouring Engine Oil To Balancer Shaft Module

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

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.
   Fig 2: Cleaning Crankshaft And Crankshaft Sprocket

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
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 [0.12 inch]) as illustrated to prevent the balancer shaft module sprocket from moving.
4. Loop the balancer chain, aligning its link plate 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.
6. While slanting the balancer shaft module, align the link plate 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.
   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.
   Fig 3: Aligning Timing Mark And Inserting Hexagonal Bar Wrench

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   Fig 4: Installing Balancer Shaft Module On Ladder Frame

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
   Fig 5: Aligning Key Groove Of Crankshaft With Contact Surface Of Cylinder Block And Ladder Frame

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
7. Apply an appropriate and minimum amount of engine oil to the screw thread of the balancer shaft module bolt.
   Fig 6: Applying Engine Oil To Screw Thread Of Balancer Shaft Module Bolt

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
8. Tighten bolts to the specified tightening torque of 20 N.m (14 ft-lb) according to the assembly order in the illustration, retighten them to 44 N.m (32 ft-lb), and then completely loosen them.
   Fig 7: Balancer Shaft Module Tightening Sequence

   Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
9. After tightening them to the specified tightening torque of 20 N.m again, use special tool MB991614 to tighten them up to 135°.
10. Pull out the hexagonal bar wrench from the balancer module sprocket.
    Fig 8: Tightening Up To 135 Degree With Special Tool

    Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
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.
    Fig 9: Aligning Respective Timing Marks With Each Other

    Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.