Camshaft Inspection: Inspection

How to use this service information .

1. Camshaft End Play - Inspect

   Preconditions 

   • Cylinder Head/Camshaft Area Parts Removed
     1. -

        VTC actuator A and VTC actuator B

     2. -

        Intake/Exhaust Rocker Arm Assemblies

   Procedure/Specifications 

   NOTE:

   Do not rotate the camshaft during inspection.

   1. Install the camshafts and the camshaft holders to the specified torque .

   2. Zero the dial indicator against the end of the camshaft, then push the camshaft back and forth, and read the end play.

   Tool Details 

   Name
   a	Dial Indicator

   Specifications 

   Standard Value (New)	Service Limit
   0.05-0.20 mm (0.0020-0.0079 in)	0.40 mm (0.0157 in)

   Courtesy of HONDA, U.S.A., INC.

   Result 

   • If the measurement is not within specifications, replace the cylinder head - Refer to: Engine Compression Inspection  or Cylinder Head Removal and Installation and recheck. If it is still beyond the service limit, replace the camshaft .
2. Camshaft-to-Holder Oil Clearance - Inspect
   NOTE:

   Journal No. is No. 1 on the cam chain side.

   Preconditions 

   • Intake and Exhaust Rocker Arm Assemblies Removed

   Procedure/Specifications 

   NOTE:

   Do not rotate the camshaft during inspection.

   1. Wipe the camshafts clean, then inspect the lift ramps. Replace the camshaft if any lobes are pitted, scored, or excessively worn.

   2. Clean the camshaft journal surfaces in the cylinder head, then set the camshafts back in place. Place a plastigage strip across each journal.

   3. Install the camshaft holders to the specified torque

   .4. Remove the camshaft holders. Measure the widest portion of plastigage on each journal.

   Specifications (Intake) 

   Position	Standard Value (New)	Service Limit
   No. 1 Journal	0.030-0.069 mm (0.00118-0.00272 in)	0.150 mm (0.00591 in)
   Except No. 1 Journal	0.060-0.099 mm (0.00236-0.00390 in)

   Specifications (Exhaust) 

   Position	Standard Value (New)	Service Limit
   No. 1 and 2 Journal	0.030-0.069 mm (0.00118-0.00272 in)	0.150 mm (0.00591 in)
   Except No. 1 and 2 Journal	0.060-0.099 mm (0.00236-0.00390 in)

   Courtesy of HONDA, U.S.A., INC.

   Result 

   • If the camshaft-to-holder clearance is within service limits, go to the cam lobe height inspection.
   • If the camshaft-to-holder clearance is beyond the service limit, and the camshaft has been replaced, replace the cylinder head - Refer to: Engine Compression Inspection  or Cylinder Head Removal and Installation .
   • If the camshaft-to-holder clearance is beyond the service limit, and the camshaft has not been replaced, go to the camshaft total runout inspection.
3. Camshaft Total Runout - Inspect

   Preconditions 

   • Camshaft Removed

   Procedure/Specifications 

   • Check the total runout.

   Tool Details 

   Name
   a	Dial Indicator
   b	V- Block (Commercially Available)

   Specifications 

   Standard Value (New)
   0.03 mm (0.0012 in) max.

   Courtesy of HONDA, U.S.A., INC.

   Result 

   • If the camshaft-to-holder clearance is beyond the service limit and the total runout of the camshaft is within the specification, replace the cylinder head - Refer to: Engine Compression Inspection  or Cylinder Head Removal and Installation .
   • If the camshaft-to-holder clearance is beyond the service limit and the total runout of the camshaft is beyond the specification, replace the camshaft, and recheck the camshaft-to-holder oil clearance. If the oil clearance is still beyond the service limit, replace the cylinder head - Refer to: Engine Compression Inspection  or Cylinder Head Removal and Installation .
4. Cam Lobe Height - Inspect

   Preconditions 

   • Camshaft Removed

   Procedure/Specifications 

   • Measure the cam lobe height.

   Specifications (Intake) 

   Position	Standard Value (New)
   a	33.647 mm (1.32468 in)
   b	35.252 mm (1.38787 in)
   c	33.647 mm (1.32468 in)

   d: Cam Chain Side

   Specifications (Exhaust) 

   Standard Value (New)
   34.246 mm (1.34827 in)

   Courtesy of HONDA, U.S.A., INC.