621G, 623G and 627G Wheel Tractor-Scrapers Air System and Brakes Caterpillar

Illustration 1	g01460718

(1) Lubricate the sealing lip with the lubricant that is being sealed in four places.

Note: Do not reuse bolts (2) after removal. Install new bolts prior to reassembly.

(2) Torque for 42 bolts on each wheel

Tighten the bolts to the following torque. ... 100 ± 10 N·m (75 ± 7 lb ft)

Then, tighten the bolts. ... 120° ± 5°

Note: Then turn the bolts by an additional 120 ± 5 degrees.

(A) Install the bearing to the following depth. ... 5.0 ± 1.0 mm (0.20 ± 0.04 inch)

(B) Install the seal to the following depth. ... 10.0 ± 1.0 mm (0.39 ± 0.04 inch)