CVVT Retaining Bolt - Revised Torque
303-32V8 XJ Series/XK8
DATE
3/99
MODEL
1999 MY-ON XK8 Range
1999 MY-ON V8 XJ Series NA
VIN
031303-ON
853936-ON
Continuously Variable Valve Timing - CVVT Unit Retaining Bolt - Revised Torque Not In JTIS
Issue:
The introduction of Continuously Variable Valve Timing, (CVVT), on 1999 Model Year AJ27 (normally aspirated) engines has required a change of timing unit from the one used on AJ26 engines. The CVVT unit can be identified by the helical splines, (A, Illustration 1), on the unit body.
The retaining bolt for the CVVT unit, (B, Illustration 1), has an oil passage drilled through the center and requires a lower torque specification when the unit is assembled to the camshaft.
Note:
When assembling the CVVT unit on the camshaft, the retaining bolt must be first tightened 30-40 Nm: and then to 85-90 Nm.
Note:
The torque specification of 115 - 125 Nm specified in JTIS section 303-01, which is applied to the VVT retaining bolt on AJ26 engines, must not be applied to the CVVT retaining bolt on A327 engines.