3406 INDUSTRIAL & MARINE ENGINES Caterpillar

(1) Tighten nut until the washer makes complete contact with the pad, then tighten the nut an additional 1.5 ± .5 turns. Install the second nut and tighten to ... 32 ± 5 lb. ft.(43 ± 7 N·m)

(2) 6L8617 Pressure Relief Cap:

Pressure valve must start to open between ... 6.5 and 8.0 psi(45 and 55 kPa)

4N3311 Pressure Relief Cap

Pressure valve must open at ... 7 psi(50 kPa)

NOTE: The vacuum relief valve must open to prevent a vacuum condition in the cooling system.

(3) Torque for bolts ... 15 ± 3 lb. ft.(20 ± 4 N·m)

NOTE: Use the tightening procedure shown to install top and bottom tanks to radiator core.

TIGHTENING PROCEDURE FOR TYPICAL TWO-ROW TANK

TIGHTENING PROCEDURE FOR TYPICAL THREE-ROW TANK