Toyota 2F - Page 39

3-40
ENGINE SERVICE - Cylinder Block
Fig. 3- 122
] f:
Fig. 3· 123
I
~
'·· .:
0
-
Fig. 3· 124
Fig. 3 · 126
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Measure 1he cylinder bore and sub 1r ac 1
the piston measurmen1 If clearance
exceeds spccihca11on . replace 1hc P•SIOI\
P is ton oil clearance:
STD 0. 03 - 0.05 mm
10.001 2 - 0. 0020 in .I
- Note -
Use t he measurement where the wear is at
maximum.
Piston Ring
I Measure 1he 11ng end gap
2
( 1l Using a p1s1on . msen 1he rmg 1n10
1he cylinder Pos111on 11>e ring a1 1he
tower pan ol 1he cyhnde• bOre
(21
Measure 1h e end gap. II 11 ex ceed!
spec1lica1ion. 1 he ring mu sl be rep
laced.
End gap :
No.1 0.20 - 0. 56 mm
(0.0079 - 0. 0220 In.I
No.2 0. 20 - 0. 58 mm
10. 0019 - 0. 0220 in .I
Oil
NP 0.20 - 0. 88 mm
(0.0 079 - 0.03 46 in.I
Aiken 0. 20 - 0. 58 mm
(0.007 9 - 0. 0220 in .I
Measure
1he 11ng groove clearance II
exceeds spec1hca11on. replace lhe rir;
and/or pis1on.
Ring groove clearance:
STD No .1 0. 03 - 0.07 mm
(0. 0012 - 0. 0028 i•
No.2 0. 02 - 0. 06 mm
(0.0008 - 0. 0024 i•
Oil N.S.W
0. 03 - 0. 07 mm
(0.0012 - 0.0028 i•
Others
0. 04 - 0.19 mm
(0.0016 - 0. 0075 i•
Fig. 3· 126
fig . 3- 127
I
Fig. 3·128
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Fig. 3· 129
ENGINE SERVICE Cylinder Bl oc k
3- 41
Crankshaft Pin & Bearing
I Check 1he bea11ngs for flaking or sco11119
If bea11ngs are damaged. replace lhOrn.
Measure 1he crank pm d1amo1or
If wear 1s excessive. 1he crankshah musl
be reground or replaced
Crank pin diameter :
STD 53.98 - 54 . 00 mm
(2. 1 252 - 2. 1 260 In.I
Taper and out-of-round:
- Note -
Limit 0.01 mm
I0.0004 in.I
Measure A and B diameters In two place s.
Mea su re 1 he crank pin oil clearance
1. Clean 1h e cranksha ft pin. rod. cap and
bearing.
Lay
a swp of ptas11gage across 1he pin