Crankshaft Inspection And Repair; Inspect Crankshaft For Runout; Inspect Main Journals And Crank Pins - Toyota 3VZ–FE Troubleshooting Manual

ENGINE TROUBLESHOOTING
CRANKSHAFT INSPECTION AND
REPAIR
1.

INSPECT CRANKSHAFT FOR RUNOUT

(a) Place the crankshaft on V–blocks.
(b) Using a dial indicator, measure the circle runout at the center
journal.
Maximum circle runout:
If the circle runout is greater than maximum, replace the
crankshaft.
2.

INSPECT MAIN JOURNALS AND CRANK PINS

(a) Using a micrometer, measure the diameter of each main
journal and crank pin.
Main journal diameter:
STD
U/S 0.25
Crank pin diameter:
STD
U/S 0.25
If the diameter is not as specified, check the oil clearance.
(See page EG–104)
(b) Check each main journal and crank pin for taper and
out–of–round as shown.
Maximum taper and out–of–round:
If the taper or out–of–round is greater than maximum, grind
or replace the crankshaft.
3. IF NECESSARY, GRIND AND HONE MAIN JOURNALS
AND/OR CRANK PINS
Grind and hone the main journals and/or crank pins to the fin-
ished undersized diameter (See procedure step 2).
Install new main journal and/or crank pin undersized bear-
ings.
– ENGINE MECHANICAL
0.06 mm (0.0024 in.)
63.985–64.00 mm (2.5191–2.5197 in.)
63.745–63.755 mm (2.5096–2.5100 in.)
54.987–55.000 mm (2.1648–2.1654 in.)
54.745–54.755 mm (2.1553–2.1557 in.)
0.02 mm (0.0008 in.)
EG–117
EGOFG–01