Crankshaft Assembly Overview

Crankshaft Assembly Overview





1 Cylinder block

• Paired to - 12 -

• Sealant applied on cylinder block (for guide frame).

2 Seals

• Replace

3 Crankshaft Shaft Seal, Belt Pulley Side

• Replacing, refer to => [ Crankshaft Shaft Seal, Belt Pulley Side, Replacing ] Service and Repair.

4 Alignment bushing

• 3 pieces

• Insert into guide frame

5 9 Nm

6 Guide tube for oil dipstick

7 O-ring

• Replace

8 Bolts

• For guide frame

• Replace

• Various bolt sizes

9 Baffle plate

10 9 Nm


11 Bolt

• For sealing surfaces of cylinder block/guide frame

• Different bolt lengths

• Tightening specifications and tightening sequence, refer to => [ Installing Guide Frame ]

12 Bearing bracket

• Paired to - 1 -

• Sealant applied on cylinder block (for guide frame), refer to => [ Guide Frame Sealant Application on Cylinder Block ]

• Tightening order, refer to => [ Installing Guide Frame ]

13 Thrust washer

• Only at the 4th crankshaft bearing

• The oil groove faces outward

• Note locating point in guide frame

• Measuring crankshaft axial clearance, refer to => [ Axial Clearance, Measuring ] Testing and Inspection

14 Bearing shell

• For guide frame without lubricating groove

• Mark used bearing shells for reinstallation but not on the running surface

• Replace the bearing shells worn down to the base layer

• Insert new bearing shells for guide frame with proper color marking: if the crankshafts are new, refer to => [ Main Bearing Shells, New Crankshafts, Allocating ] Main Bearing Shells, New Crankshafts, Allocating; if the crankshafts are worn and reworked, => [ Allocation of Main Bearing Shells for Used and Reworked Crankshafts ] Allocation of Main Bearing Shells For Used and Reworked Crankshafts

15 Crankshaft

• Measuring axial play, refer to => [ Axial Clearance, Measuring ] Testing and Inspection

• Radial clearance, measuring, refer to => [ Radial Clearance, Measuring ] Radial Clearance, Measuring

• Crankshaft dimensions, refer to => [ Crankshaft Dimensions ] [1][2]Crankshaft, Engine

16 Thrust washer

• Only at the 4th crankshaft bearing

• The oil groove faces outward

• Measuring crankshaft axial clearance, refer to => [ Axial Clearance, Measuring ] Testing and Inspection

17 Bearing shell

• For cylinder block with oil groove

• Mark used bearing shells for reinstallation but not on the running surface

• Replace the bearing shells worn down to the base layer

• Insert new bearing shells for cylinder block with proper color marking: if the crankshafts are new, refer to => [ Main Bearing Shells, New Crankshafts, Allocating ] Main Bearing Shells, New Crankshafts, Allocating; if the crankshafts are worn and reworked,=> [ Allocation of Main Bearing Shells for Used and Reworked Crankshafts ] Allocation of Main Bearing Shells For Used and Reworked Crankshafts

18 Seals

• Replace

Baffle Plate Tightening Plate





- Then tighten bolts in sequence - 1 to 21 -.

Guide Frame Sealant Application on Cylinder Block





- Clean the sealing surfaces, they must be free of oil and grease.

- Apply sealant beads - arrows - on clean sealing surfaces of guide frame as shown in illustration.

• Thickness of sealant beads: 2.0 mm.

- Install seals - 1 to 4 -.

Installation Position of Alignment Bushings





- Check whether alignment bushings - arrows - are inserted at locations in guide frame as shown in the illustration.

Installing Guide Frame





- Replace the guide frame bolts - 1 through 24 -.

- Tighten the bolts in 5 steps according to the tightening sequence:





- Tighten the guide frame to cylinder block sealing surface bolts, - highlighted in dark -, diagonally to 9 Nm.