Valve Clearance: Adjustments
Cam ClearanceADJUSTMENT
1) Remove the engine from the vehicle.
2) Remove the chain cover.
3) When adjusting #1 and #3 cylinders
(1) Remove the timing chain RH.
(2) Remove the cam carrier RH.
(3) Measure the thickness of valve shim using micrometer.
NOTE:
Measurement should be performed at a temperature of 20°C (68°F).
(4) Select a valve shim of suitable thickness using the measured cam clearance and valve shim thickness.
NOTE:
Use a new valve shim.
(5) Install the cam carrier RH.
(6) Check all the cam clearance of RH side at this time. If the cam clearance is not within the standard value, repeat the procedure over again from step 2). Testing and Inspection
NOTE:
When the removing/installing of cam carrier RH has been performed, cam clearance may be outside the standard value. Checking of all cam clearance of RH side is necessary. Refer to INSPECTION of "Cam Clearance" for the cam clearance inspection. Testing and Inspection
Cam clearance:
Intake
Standard
0.13±0.03 mm (0.0051±0.0012 in)
Exhaust
Standard
0.24±0.03 mm (0.0094±0.0012 in)
4) When adjusting #2 and #4 cylinders
(1) Remove the timing chain LH.
(2) Remove the cam carrier LH.
(3) Measure the thickness of valve shim using micrometer.
NOTE:
Measurement should be performed at a temperature of 20°C (68°F).
(4) Select a valve shim of suitable thickness using the measured cam clearance and valve shim thickness.
NOTE:
Use a new valve shim.
(5) Install the cam carrier LH.
(6) Check all the cam clearance of LH side at this time. If the cam clearance is not within the standard value, repeat the procedure over again from step 2). Testing and Inspection
NOTE:
When the removing/installing of cam carrier LH has been performed, cam clearance may be outside the standard value. Checking of all cam clearance of LH side is necessary. Refer to INSPECTION of "Cam Clearance" for the cam clearance inspection. Testing and Inspection
Cam clearance:
Intake
Standard
0.13±0.03 mm (0.0051±0.0012 in)
Exhaust
Standard
0.24±0.03 mm (0.0094±0.0012 in)
5) After adjustment, install the related parts in the reverse order of removal.