X-90 (2WD) L4-1591cc 1.6L SOHC MFI (1997)
Rocker Arm Assembly: Service and Repair
Inspection
INSPECTION
Adjusting Screw and Rocker Arm
If tip of adjusting screw is badly worn, replace it. Rocker arm must be replaced if its cam-riding face is badly worn.
Rocker Arm Shaft Runout
Using "V" blocks and dial gauge, check runout. If runout exceeds its limit, replace rocker arm shaft.
Runout limit: 0.20 mm (0.008 inch)
Rocker Arm-to-Rocker Arm Shaft Clearance
Using a micrometer and a bore gauge, measure rocker shaft diameter and rocker arm I.D. Difference between two readings is arm-to-shaft clearance
on which a limit is specified. If limit is exceeded, replace shaft or arm, or both.
Rocker Arm I.D.:
Standard: 15.985- 16.005 mm (0.629 - 0.630 inch).
Rocker Arm Shaft Diameter:
Standard: 15.969- 15.984 mm (0.6287 - 0.6293 inch).
Arm-to-Shaft Clearance:
Standard: 0.001 - 0.036 mm (0.0001 - 0.0014 inch).
Limit: 0.09 mm (0.0035 inch).
Cam Wear