Cylinder Block - Toyota Supra 1990 Manual

ENGINE MECHANICAL - Cylinder Block EM-71
. . . Front
2 3 4
5
6
EM1471
(d) Arrange the pistons and connecting rod caps in order .
21. CHECK CRANKSHAFT THRUST CLEARANCE
Using a dial gauge, measure the crankshaft thrust clear-
ance while prying the crankshaft back and forth with a
screwdriver.
Standard clearance: 0.05 - 0.25 mm
(0.0020 - 0.0098 in.)
Maximum clearance: 0.30mm (0.0118 in.)
If the clearance is greater than maximum, replace the thrust
washers as a set and/or crankshaft.
L...-_ _ _ _ _ _ _ _ _ _ _ _ _ _
E_M_29_7--'2
HINT: Thrust washer thickness:
4 8 12 14 10 6 2
~,J
3 7 11 13 9
EM2973
STD 2.925 - 2.975 mm (0.1152 - 0.1171 in.)
OIS
0.125 2.988 - 3.038mm (0.1176 - 0.1196in.)
22. REMOVE MAIN BEARING CAPS AND CHECK OIL
CLEARANCE
(a) Uniformly loosen and remove the main bearing cap
bolts in several passes, in the sequence shown.
(b) Using the removed bearing cap bolts, wiggle the bear-
ing cap back and forth, and remove it with the lower
bearing and thrust washers (No.4 journal only).
HINT:
• Keep the lower bearing inserted with the cap.
• Arrange the caps and lower thrust washers in correct
order.
(c) Lift off the crankshaft.
HINT: Keep the upper bearings and upper thrust wash-
F2147
ers (for the No.4 journal only) inserted in the cylinder block.
L...-_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ --'
EM6853
(d) Clean the journals and bearings.
(e) Check the journals and bearings for pitting and
scratches.
If the journal or a bearing is damaged, grind or replace the
crankshaft and replace the bearings.