4. ENGJNE
4. VALVES AND VAL VE SPRINGS
A. Disassembly
l. Remove the cylinder head by referring
to section 3. A.
2. Compress the valve springs with a valve
spring compressor (Tool No.
07957-
3290000), remove the valve cotters, and
the valves.
Note:
Do not compress the spring s more than
necessary. Compressing them excessively
may damage the valve ste m seals.
3. Drive the valve guide out of the cylinder
head using the valve guide remover
(Tool No.
07046-32301).
B. Inspection
l. Measure valve stem clearance.
Insert the valve into the guide and measure
the clearance in both the X and Y direc-
tions using a dial gauge. Replace the
valve and guide in set if clearance beyond
the serviceable limit.
Drive the guide into the cylinder head
using a valve guide driver (Tool No.
07942-3290100) and finish ream the guide
to the proper size with the reamer (Tool
No.
07984-0980000). Standard valve guide
inside diameter for both the inlet and
exhaust is
5.475,_,5.4g5 mm (0.2153 in.,_,
0.2157 in.)
Fig. 90 CD Valve spring compressor
(2) Cylinder head
Fig. 91
CD Valve guide remover
Fig. 92 CD Valve
@ Dial gauge
33
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