623F Wheel Tractor-Scraper Hydraulic System Caterpillar

Illustration 1	g00528771

Cylinder stroke ... 1352.7 mm (53.26 inch)

(1) Diameter of the new piston ... 151.90 ± 0.05 mm (5.980 ± .002 inch)

(2) Bore of the new cylinder ... 152.45 ± 0.10 mm (6.002 ± .004 inch)

(3) Diameter of the new rod ... 101.55 ± 0.04 mm (4.000 ± .002 inch)

(4) Lubricate the seals with the lubricant that is being sealed.

(5) Torque for the nut with the lubricant on the threads ... 7000 ± 700 N·m (5163 ± 516 lb ft)

(6) Bore of the new head ... 101.88 ± 0.03 mm (4.011 ± .001 inch)

(7) Tighten the head bolts when the rod is fully extended.