Suzuki GSXR-1100 1990 Service Manual page 58

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3-25 ENGINE
CYLINDER HEAD DISTORTION
Oacilrbooize t ha combustion c hambers.
Check che oaske,ed surface of the cyli,,der hetld for distortion
with a s traightedge and thic km~ss gauge. taking a clearanc e
rea<fio9 a t
SCVl)(31
~la ces indicau.:d. If IIW IO(fJCSl ((l;)(hll!J a t 3ny
position o f the s traightedgP. exceedr. the limit, replAce the
cylindo1 hood.
09900-20803: Thickn(l:$$ ga:uge
Sorvico Limit: 0 .2 mm (0.008 in)
VALVE STEM RUNOUT
Support the valve w ith "V" block~, as shown. and c hec k its
runout
with
a diol gouge.
The valve most he replaced if the runout exceed s the lirnit.
Service Limit: 0.05 mm iD.002 in]
VALVE HEAD RADIAL RUNOUT
Place the <lial gauge ;:n right Mgles to the valve heMI face. and
mo;;isuro tho valva heutf n'.ltlial runout
If it
mea~ .ures more than the limit. replace the valve.
Service limit: 0.03 mm (0.001 in)
VALVE FACE WEAR
Visually inspect each valve for wear of its seating face. Re place
(ll'Y
valve
wi1h ao abnormally w o,n r-,cc:.
Tha thickness
(D
d ecreases as the wear of t he fac e advances.
Measure the thick.ness aod , ir the thick:oess is fo~•nd to ha ve
been reduced
to
the limit, replace it.
Servico
l.hnh
C):
0.6 mm (0.02 int
VALVE GUIDE-VALVE STEM CLEARANCE
M ea!lure the c le,:1r;,i,nce In two cfoection s, .,X,, and " Y"', perpen•
d ,cul;;ir to oach OlhUr, by µo:.itioning thu dial g.iuga .i:. show11.
If the c learnnce meas urP.d P.xceects the limit, (see belowt then
detormioe who lhc r tlll:
valve
or tha g uid~ should IJa r4.1placad
to reduce the clearance to the s tAndi:ird ,ange:
Sorvico
l..hni l
Intake valves : 0.35 mm (0.014 in)
Exhau~t valves: 0.35 mm (0.014 in)
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