Toyota Tundra 2005 Service - Repair - Maintenance page 2280

MANUAL TRANSMISSION (RA60)
8.
Using a cylinder gauge, measure the inside diameter of the
gear.
If the inside diameter exceeds the maximum, replace the 6th
gear.
D14057
9.
Using a micrometer, measure the thrust washer thickness.
If the thickness is less than the minimum, replace the 3rd gear
thrust washer.
D14058
− INPUT SHAFT
INSPECT 6TH GEAR
Standard inside diameter:
51.015 to 51.040 mm (2.0085 to 2.0094 in.)
Maximum inside diameter:
51.040 mm (2.0094 in.)
INSPECT 3RD GEAR THRUST WASHER
Standard thickness:
7.12 to 7.18 mm (0.2803 to 0.2827 in.)
Minimum thickness:
7.12 mm (0.2803 in.)
MT−37