Service Manual

5.29
ENGINE
5
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.
Cylinder Head Disassembly
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 (B).
2. Remove compressor, then remove top retainer, spring, and
seal (C). 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.
= In. / mm.
Cylinder Head Warp Limit:
.004" (.10 mm) max
A
WARNING
Wear eye protection when removing and installing
valve springs.
= In. / mm.
Valve Spring Free Length:
Std: 1.861" (47.26 mm)
B C