Removal and Installation - Camshafts

Special Service Tools / General Equipment

	303-465 Camshaft Timing Tool TKIT-1994-LMH/MH2 TKIT-1994-FX/FMX/FLMX
	303-507 Timing Pin, Crankshaft TDC TKIT-2001N-FLM TKIT-2001N-RYAD
Feeler gauge

Removal

1. 1
   Remove the VCT unit.
   Refer to: Variable Camshaft Timing (VCT) Unit (303-01C, Removal and Installation).
2. 2
   Remove the bolt and the VCT oil control solenoid.

   

3. 3
   Remove the special service tool: 303-465 Camshaft Timing Tool.

   

4. 4
   Loosen the camshaft bearing cap bolts in sequence, one turn at a time, until all tension is released from the camshaft bearing caps. Remove the bolts and the camshaft bearing caps.

   

5. 5
   Remove the camshafts.

   

Installation

1. 1
   Paint a mark on the crankshaft at the 12 o'clock position.

   

2. 2
   Remove the special service tool: 303-507 Camshaft/Crankshaft TDC Pin.

   

3. 3
   Using the crankshaft bolt and a washer, rotate the crankshaft clockwise 270 degrees until the paint mark is at the 9 o'clock position.

   

4. 4
   Lubricate the camshafts with clean engine oil and install.
   Refer to: Specifications (Engine 303-01C, Specifications).

   

5. 5
   • Lubricate the camshaft bearing caps with clean engine oil and install the camshaft bearing caps and bolts.
     Refer to: Specifications (Engine 303-01C, Specifications).

   • Tighten the camshaft bearing cap bolts by hand, one turn at a time, until seated.

   • Tighten the camshaft bearing cap bolts in sequence in 2 stages.
     Torque:
     Stage 1: 62 lb-in (7 N·m)
     Stage 2: 142 lb-in (16 N·m)

   

6. 6
   1. Using the camshaft flats, rotate the camshaft to place the cam lobe on the base circle so that the lobe points away from the tappet.

   2. Using a feeler gauge, measure the clearance of each valve and record its position.
      Use general equipment: Feeler Gauge

   3. Repeat to measure all cam/tappet clearances.

   

7. 7
   • Intake: 0.25 mm (0.0098 in).
   • Exhaust: 0.30 mm (0.0118 in).

   • Intake: 0.23-0.28 mm (0.009-0.011 in).
   • Exhaust: 0.27-0.33 mm (0.010-0.013 in).

   Select the tappet size closest to the ideal available tappet thickness and mark the installation location.
8. 8
   Loosen the camshaft bearing cap bolts in sequence, one turn at a time, until all tension is released from the camshaft bearing caps. Remove the bolts and the camshaft bearing caps.

   

9. 9
   Remove the camshafts.

   

10. 10
    Install the special service tool: 303-507 Timing Pin, Crankshaft TDC.

    

11. 11
    Rotate the crankshaft clockwise 90 degrees until the crankshaft contacts the TDC pin.
    Install the Special Service Tool: 303-507 Timing Pin, Crankshaft TDC.

    

12. 12
    If necessary, lubricate with clean engine oil and install all tappets with the correct tappets selected during the valve clearance check.
    Refer to: Specifications (Engine 303-01C, Specifications).

    

13. 13
    Lubricate the camshafts and camshaft journals with clean engine oil and install the camshafts.
    Refer to: Specifications (Engine 303-01C, Specifications).

    

14. 14
    • Lubricate the camshaft bearing caps with clean engine oil and install the camshaft bearing caps and bolts.
      Refer to: Specifications (Engine 303-01C, Specifications).

    • Tighten the camshaft bearing cap bolts by hand, one turn at a time, until seated.

    • Tighten the camshaft bearing cap bolts in sequence in 2 stages.
      Torque:
      Stage 1: 62 lb-in (7 N·m)
      Stage 2: 142 lb-in (16 N·m)

    

15. 15
    Install the Special Service Tool: 303-465 Camshaft Timing Tool.

    

16. 16
    Install the VCT oil control solenoid and bolt.
    Torque: 97 lb-in (11 N·m)

    

17. 17
    Install the VCT unit.
    Refer to: Variable Cam Timing (VCT) Unit (Engine 303-01C, Removal and Installation).
18. 18
    Road test the vehicle.