Toyota 3R-B 1969, Repair Manual

Page: 48 / 193

E N G I N E - Major S e r v i c e 3-21
1.520 ~ 1.530 mm
(0.0598 ~ 0 .0 6 0 2 ")
U/S-010:
Bearing thickness:
1.622 ~ 1.632 mm
(0.0639 ~ 0 .0 6 4 3 ")
Crank pin finished diameter:
54.731 ~ 54.741 mm
(2.1548 ~ 2 .1 5 5 2")
U /S-0 20:
B e arin g thickness:
1.749 ~ 1.759 mm
(0.0689 ~ 0 .0 6 9 3 ")
Crank pin finished diameter:
54.477 - 54.487 mm
(2.1448 - 2 .1 4 5 2 ")
U /S-0 30 :
B e arin g thickness:
1.876 ~ 1.886 mm
(0.0739 ~ 0.0 743*)
Crank pin finished diameter:
54.223 ~ 54.233 mm
(2.1348 ~ 2 .1 3 5 2 ")
U /S-0 40:
B e arin g thickness:
2.003 ~ 2.013 mm
(0.0789 ~ 0 .0 7 9 3 ")
Crank pin finished diameter:
53.969 ~ 53.979 mm
(2.1248
fs
2 .1 2 5 2 ")
F o r 5R engine:
S T D :
B e arin g thickness:
1.495 ~ 1.505 mm
(0.0589 ~ 0 .0 5 9 3 ")
Crank pin finished diameter:
54.985 ~ 55.000 mm
(2.1664 ~ 2 .1 6 7 0 ")
U . S - 0 . 25:
B earing thickness:
1.625 ~ 1.635 mm
(0.0640 ~ 0 .0 6 4 4 ")
Crank pin finished diameter:
54.730 ~ 54.740 mm
(2.1564 ~ 2 .1 5 6 8 ")
U / S - 0 . 5 0 :
B e arin g thickness:
1.750 ~ 1.760 mm
(0.0690 - 0 .0 6 9 3 ")
Crank pin finished diameter:
54.480 - 54.490 mm
(2.1465 I 2 .1 4 6 9 ")
U / S - 0 .7 5 :
B e arin g thickness:
1,875 ~ 1.885 mm
(0.0739 ~ 0 .0 7 4 3 ")
Crank pin finished diameter:
54.230 ~ 54.240 mm
(2.1367 ~ 2 .1 3 7 1 ")
U / S -1 .0 0 :
B e arin g thickness:
2.000 ~ 2.010 mm
(0.0788 ~ 0 .0 7 9 2 ")
Crank pin finished diameter:
53.980 ~ 53.990 mm
(2.1268 * 2 .1 2 7 2 ")
7. If a new crankshaft is utilized, al­
w a y s use a standard size b e a r ­
ings.
When the bearing clearan ce e x ­
ce e d s the limit, use under size
bearings, and grind the crank pin
journals to the specified finished
d ia m e ters.
A f t e r grinding the crank pin jo u r ­
nals, alw ays check the bearing
c le a r a n c e .
Crankshaft
1. Check the crankshaft f o r run-out,
and straighten o r rep la ce the
crankshaft if the run-out e x c e e d s
0.05 mm ( 0 . 0 0 2 " ) , attach a dial
gauge to the center bearing jo u r ­
nal , and rotate the crankshaft one
complete turn.
Read one-half the difference of the
maximum gauge reading.
F i g . 3-35 Checking C ra n k - V4686
shaft Run-Out
2. Inspect the crank pin journals and
the crankshaft journals f o r w e a r
and s c o r e s , and if the out-of-
round o r taper e x c e e d s 0.01 mm