Vtec Rocker A R M Test - Honda ACCORD HYBRID 2005 Service Manual

Cylinder Head
V T E C Rocker Arm Test
Special Tools Required
Air pressure regulator 07AAJ-PNAA100
1. Start the engine and let it run for 5 minutes, then
turn off the ignition s w i t c h .
2. Remove the rear cylinder head cover (see page
6-32).
3. Set the No. 1 piston at top dead center (TDC) (see
step 2 on page 6-10).
4. Push on the intake secondary rocker a r m (C) for the
No. 1 cylinder. Make sure that the intake primary
rocker arm A and intake p r i m a r y rocker arm B are
mechanically connected by the pistons and that the
intake secondary rocker a r m does not m o v e w h e n
pushed manually.
• If the intake secondary rocker arm moves
independently, r e m o v e the intake primary rocker
arm A, intake p r i m a r y locker arm B, and intake
secondary rocker a r m as an assembly, and check
that the pistons in the rocker arms m o v e
smoothly. If any intake rocker a r m needs
replacing, replace the primary and secondary
rocker arms as an assembly, and retest.
• If the intake secondary rocker a r m does not m o v e ,
go to step 5.
5. Push on the exhaust secondary rocker arms (A) for
the No. 1 cylinder. Make sure that the exhaust
p r i m a r y rocker arm (B) is mechanically connected
by the pistons and that the exhaust secondary
rocker arm does not m o v e w h e n pushed manually.
• If the exhaust secondary rocker arm moves
independently, remove the exhaust primary
rocker arm and exhaust secondary rocker arm as
an assembly, and check that the pistons in the
rocker arms m o v e s m o o t h l y . If any exhaust
rocker arm needs replacing, replace the primary
and secondary rocker arms as an assembly, and
retest.
• If the exhaust secondary rocker arm does not
m o v e , go to step 6.
6. Repeat steps 4 and 5 for No. 2 and No. 3 cylinders
w i t h each piston at TDC. W h e n the rocker arms
pass the test, go to step 7.
7. Check that the air pressure on the shop air
compressor gauge indicates over 200 kPa
(2.0 kgf/cm 2 , 29 psi).
8. Inspect the valve clearance (see page 6-10).
6-8