Camshaft Inspection: Inspection

How to use this manual .

1. Camshaft End Play - Inspect

   Preconditions 

   • Rocker Arms Removed
   • VTC Actuators

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

   Procedure/Specifications 

   NOTE:  Do not rotate the camshaft during inspection.

   1. Install the front/rear cylinder head covers 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 (0.016 in)

   Result 

   • If the measurement is not within specifications, replace the cylinder head - Refer to: Cylinder Head Removal and Installation () or Engine Compression Inspection ()  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 Removed

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

   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 cylinder head covers to the specified torque .

   4. Remove the cylinder head covers. Measure the widest portion of plastigage on each journal.

   Specifications 

   Standard Value (New)		Service Limit
   No. 1 Journal	0.035-0.069 mm (0.00138- 0.00272 in)	0.069 mm (0.00272 in)
   No. 2-4 Journals	0.030-0.069 mm (0.00118- 0.00272 in)

   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: Cylinder Head Removal and Installation () or Engine Compression Inspection () .
   • 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

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

   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.

   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: Cylinder Head Removal and Installation () or Engine Compression Inspection () .
   • 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: Cylinder Head Removal and Installation () or Engine Compression Inspection () .
4. Cam Lobe Height - Inspect

   Preconditions 

   • Camshaft Removed

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

   Procedure/Specifications 

   • Measure the cam lobe height.

   Specifications (Front) 

   Position		Standard Value (New)
   a	Intake	34.527 mm (1.35933 in)
   	Exhaust	34.241 mm (1.34807 in)

   b: Timing Belt Side

   Specifications (Rear) 

   Position		Standard Value (New)
   a	Intake	34.638 mm (1.36370 in)
   	Exhaust	34.351 mm (1.35240 in)

   b: Timing Belt Side

   Result 

   • If it is abnormal, replace the camshaft.