Honda HR-V: Cylinder Head Disassembly
NOTE: Examples used in this article are general in nature and do not necessarily relate to a specific engine or system. Illustrations and procedures have been chosen to guide mechanic through engine overhaul process. Descriptions of processes of cleaning, inspection, assembly and machine shop practice are included.
Always refer to appropriate engine overhaul article, if available, in the ENGINES section for complete overhaul procedures and specifications for the vehicle being repaired.
Mark valves for location. Using valve spring compressor, compress valve springs. Remove valve locks.
Carefully release spring compressor. Remove retainer or rotator, valve spring, spring seat and valve. See Fig. 2.
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Fig. 2: Exploded View of Valve Assemblies
CYLINDER HEAD CLEANING & INSPECTION
NOTE: Examples used in this article are general in nature and do not necessarily relate to a specific engine or system. Illustrations and procedures have been chosen to guide mechanic through engine overhaul process. Descriptions of processes of cleaning, inspection, assembly and machine shop practice are included.
Always refer to appropriate engine overhaul article, if available, in the ENGINES section for complete overhaul procedures and specifications for the vehicle being repaired.
Clean cylinder head and valve components using approved cleaning methods. Inspect cylinder head for cracks, damage or warped gasket surface. Place straightedge across gasket surface. Determine clearance at center of straightedge. Measure across both diagonals, longitudinal center line and across cylinder head at several points. See Fig. 3.
On cast iron cylinder heads, if warpage exceeds.003" (.08 mm) in a 6" span, or.006" (.15 mm) over total length, cylinder head must be resurfaced. On most aluminum cylinder heads, if warpage exceeds.002" (.05 mm) in any area, cylinder head must be resurfaced. Warpage specification may vary by manufacturer. If warpage exceeds specification on some cylinder heads, cylinder head must be replaced.
Cylinder head thickness should be measured to determine amount of material which can be removed before replacement is required. Cylinder head thickness must not be less than the manufacturer's specification.
If cylinder head required resurfacing, it may not align properly with intake manifold. On "V" type engines, misalignment is corrected by machining intake manifold surface that contacts cylinder head. Cylinder head may be machined on surface that contacts intake manifold. Using oil stone, remove burrs or scratches from all sealing surfaces.
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Fig. 3: Checking Cylinder Head for Warpage
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Valve Springs
NOTE: Examples used in this article are general in nature and do not
necessarily relate
to a specific engine or system. Illustrations and procedures have been chosen
to guide mechanic through engine
Valves & Valve Seats
NOTE: Examples used in this article are general in nature and do not
necessarily relate
to a specific engine or system. Illustrations and procedures have been chosen
to guide mechanic through engine
Cylinder Head Reassembly
NOTE: Examples used in this article are general in nature and do not
necessarily relate
to a specific engine or system. Illustrations and procedures have been chosen
to guide mechanic through engine
SEE MORE:
DTC Troubleshooting B00D5-17: Short to Power in the Front
Passenger's Airbag Cutoff Indicator (KA/KC)
NOTE:
Before doing this troubleshooting procedure, find out if the vehicle was
in a collision. If so, verify
that all the required components were replaced with new components of the
correct part number,
and that they were properly installed.
Before doing this troubleshooting procedure, rev
Overhaul
ALTERNATOR OVERHAUL
Special Tools Required
Bearing Driver
Attachment, 42 x
47 mm
07746-0010300
Driver Handle, 15
x 135L
07749-0010000
Exploded View
1. Alternator Exploded View
Fig. 1: Alternator Exploded View With Torque Specifications
Disassembly
NOTE: Refer to the Exploded View if needed during
