3.50
CYLINDER HEAD WARP INSPECTION
1. Lay a straight edge (A) across surface of cylinder
head at several different points and measure warp
by inserting a feeler gauge between the straight
edge and the cylinder head surface. If warp exceeds
the service limit, replace the cylinder head.
MEASUREMENT
Cylinder Head Warp Limit:
0.004" (0.10 mm) max
CYLINDER HEAD DISASSEMBLY
WARNING
Wear eye protection when removing and installing
valve springs.
NOTE
Keep mated parts together for assembly. It is important
to put cylinder head parts back in the same location.
Mark parts or place them in a rack as you remove them.
Valve Spring Compressor:
PV-1253 (or PV-4019 with adapter PV-43513-A)
1. Compress valve spring and remove split keepers
w
.
2. Remove compressor, then remove top retainer,
spring and seal
e
. Discard seals. Repeat for all
remaining valves.
3. Clean combustion chamber and head gasket
surface.
4. Measure free length of each spring with a Vernier
caliper and compare to specification.
MEASUREMENT
Valve Spring Free Length:
Std: 1.861" (47.26 mm)
ENGINE / COOLING SYSTEM
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