Toyota Land Cruiser 1988 Repair Manual page 96

ENGINE MECHANICAL- Cylinder Block EM-65
EM1324
3. IF NECESSARY, GRIND AND HONE MAIN
JOURNALS AND/OR CRANK PINS
Grind and hone the main journals and/ or crank pins to
the finished undersized diameter (See procedure step 2).
Install new main journal and I or crank pin undersized
bearings.
INSPECTION AND REPAIR OF
CAMSHAFT BEARINGS
1. INSPECT CAMSHAFT OIL CLEARANCE
(a) Using a cylinder gauge, measure the inside diameter
of the camshaft bearing.
Bearing inside diameter (from front side)
STD size No.1 48.000 - 48.030 mm
{1.8898 -1.8909in.)
No.2 46.500 - 46.530 mm
(1.8307 -1.8319 in.)
No.3 45.000- 45.030 mm
(1.7717 -1.7728 in.)
No.4 43.500- 43.530 mm
(1.7126 -1.7138 in.)
U/S 0.25 No.1 47.750- 47.825 mm
(1.8799 -1.8829 in.)
No.2 46.250 - 46.325 mm
(1.8209 -1.8238 in.)
No.3 44.750-44.820 mm
(1.7618 -1.7646 in.)
No.4 43.250 - 43.320 mm
(1.7028- 1.7055 in.)
U/S 0.50 No.1 47.500-47.575 mm
{1.8701 -1.8730 in.)
No.2 46.000 - 46.075 mm
(1.8110 -1.8140 in.)
No.3 44.500 - 44.570 mm
(1.7520 -1.7547 in.)
No.4 43.000- 43.070 mm
(1.6929 -1.6957 in.)
(b) Subtract the journal diameter measurement (See
page EM-38) from the bearing inside diameter mea-
surement.
Standard clearance:
STD size 0.025 - 0.075 mm
(0.0010- 0.0030 in.)
U/S 0.25 and 0.50
No.1 and No.2 0.025-0.110 mm
(0.0010- 0.0043 in.)
No.3 and No.4 0.025- 0.105 mm
(0.0010- 0.0041 in.)
Maximum clearance:
STD size 0.10 mm (0.0039 in.)
U/S 0.25 and 0.50 0.15 mm {0.0059 in.)
If the clearance is greater than maximum, replace the
camshaft bearings. If necessary, grind or replace the
camshaft.