Crankshaft Installation

Special Tools Required 

• Driver Handle, 15 x 135L 07749-0010000
• Oil Seal Driver Attachment, 96 mm 07ZAD-PNAA100

1. Check the main bearing clearance with plastigage (see MAIN BEARING CLEARANCE INSPECTION  ).
2. Check the connecting rod bearing clearance with plastigage (see CONNECTING ROD BEARING CLEARANCE INSPECTION  ).
3. Install the bearing halves in the engine block and the connecting rods.
4. Apply new engine oil to the inside of the main bearings and the rod bearings.
5. Install the CKP pulse plate (A) on the crankshaft (B); face the marked side (C) opposite the crankshaft, and align the tab (D) on the CKP pulse plate with the groove (E) on the crankshaft.
   Fig 1: Tab On CKP Pulse Plate And Groove On Crankshaft With Torque Specifications

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
6. Hold the crankshaft so rod journal No. 2 and rod journal No. 3 are straight up, and lower the crankshaft into the engine block.
7. Apply new engine oil to the side with the thrust washer groove. Install the thrust washers (A) in the No. 4 journal.
   Fig 2: Identifying Thrust Washer

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
8. Inspect the connecting rod bolts (see CONNECTING ROD BOLT INSPECTION  ).
9. Apply new engine oil to the threads and flanges of the connecting rod bolts.
10. Seat the rod journals into connecting rod No. 1 and connecting rod No. 4. Line up the mark (A) on the connecting rod and cap, then install the caps and the bolts finger-tight.
    Fig 3: Identifying Mark On Connecting Rod

    Courtesy of AMERICAN HONDA MOTOR CO., INC.
11. Rotate the crankshaft clockwise, and seat the journals into connecting rod No. 2 and connecting rod No. 3. Line up the mark on the connecting rod and the cap, then install the caps and the bolts finger-tight.
12. Torque the connecting rod bolts to 10 N.m (1.0 kgf.m, 7 lbf.ft).
    Fig 4: Connecting Rod Bolt Tightening Diagram

    Courtesy of AMERICAN HONDA MOTOR CO., INC.
13. Tighten the connecting rod bolts an additional 90°.
    NOTE: Remove the connecting rod bolt if you tightened it beyond the specified angle, and go back to step  8 of the procedure. Do not loosen it back to the specified angle.
14. Install the bearing caps with the arrows facing (A) the cam chain side on the bearing cap bridge.
    Fig 5: Identifying Bearing Caps With Arrows

    Courtesy of AMERICAN HONDA MOTOR CO., INC.
15. Remove old liquid gasket from the bearing cap bridge/No. 5 bearing cap mating surfaces.
16. Clean and dry the bearing cap bridge/No. 5 bearing cap mating surfaces.
17. Apply liquid gasket (P/N 08718-0004) to the engine block mating surface of the bearing cap bridge/No. 5 bearing cap. Install the component within 5 minutes of applying the liquid gasket.
    NOTE:

    • Apply a 2.5 mm (0.098 in) diameter bead of liquid gasket along the broken line (A).
    • If too much time has passed after applying the liquid gasket, remove the old liquid gasket and residue, then reapply new liquid gasket.
      Fig 6: Identifying Diameter Bead Of Liquid Gasket

      Courtesy of AMERICAN HONDA MOTOR CO., INC.
18. Put the bearing cap bridge on the engine block.
19. Apply new engine oil to the threads and flange of the bearing cap bolts.
20. Torque the bearing cap bolts in sequence to 25 N.m (2.5 kgf.m, 18 lbf.ft).
    Fig 7: Bearing Cap Bolts Tightening Sequence

    Courtesy of AMERICAN HONDA MOTOR CO., INC.
21. Tighten the bearing cap bolts an additional 40°.
    Fig 8: Bearing Cap Bolt Tightening Diagram

    Courtesy of AMERICAN HONDA MOTOR CO., INC.
22. Clean the excess liquid gasket off the engine block.
23. Clean and dry the crankshaft oil seal housing.
24. Apply a light coat of new engine oil to the lip of the crankshaft oil seal.
25. Use the driver handle, 15 X 135 L, and the oil seal driver attachment, 96 mm, to drive a new crankshaft oil seal squarely into the block to the specified installed height.
    Fig 9: Installing Crankshaft Oil Seal

    Courtesy of AMERICAN HONDA MOTOR CO., INC.
26. Measure the distance between the cylinder block (A) and the oil seal (B).

    Oil Seal Installed Height: 

    0.2-1.2 mm (0.008-0.047 in) 

    Fig 10: Identifying Oil Seal Installed Height

    Courtesy of AMERICAN HONDA MOTOR CO., INC.
27. Install the cylinder head (see CYLINDER HEAD INSTALLATION ).
28. Install the oil pump (A) with a new O-ring (B).
    Fig 11: Oil Pump, O-Ring, Oil Screen And Gasket With Torque Specifications

    Courtesy of AMERICAN HONDA MOTOR CO., INC.
29. Install the oil screen (C) with a new gasket (D).
30. Install the oil pan (see OIL PAN INSTALLATION  ).
31. Install the cam chain (see CAM CHAIN INSTALLATION ).
32. Install the IMA motor rotor position sensor (see IMA MOTOR ROTOR POSITION SENSOR REMOVAL/INSTALLATION ), the IMA motor housing (see DRAIN COVER REMOVAL/INSTALLATION ), and the IMA motor rotor (see IMA MOTOR ROTOR REMOVAL/INSTALLATION ).
33. Install the transmission.
    • M/T model (see TRANSMISSION INSTALLATION )
    • CVT model (see DRIVE PLATE REMOVAL/INSTALLATION )
34. Install the engine/IMA motor/transmission (see ENGINE INSTALLATION ).
    NOTE: When any crankshaft or connecting rod bearing is replaced, run the engine at idle speed until it reaches normal operating temperature, then continue to run it for about 15 minutes.