3408 & 3408B INDUSTRIAL & MARINE ENGINE ATTACHMENTS Caterpillar


Radiators

Usage:


TYPICAL ILLUSTRATION

4N3013, 4N3019, 7N9948 and 7N9949 Radiators:

NOTE: Item (1) is not necessary on 7N9948 and 7N9949 Radiators.

(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 ... 43 ± 7 N·m (32 ± 5 lb. ft.)

(2) 6L8617 Pressure Relief Cap:

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

Vacuum valve must open at a maximum of ... 4 kPa (.6 psi)

(3) Torque for bolts that hold the guard to the front of the radiator ... 20 ± 4 N·m (15 ± 3 lb. ft.)

4N3017, 4N3024, 7N9950 and 7N9951 Radiators

NOTE: Item (1) is not necessary on 7N9951 and 7N9950 Radiators.

(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 ... 43 ± 7 N·m (32 ± 5 lb. ft.)

(2) 4N3311 Pressure Relief Cap:

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

(3) Torque for bolts that hold the guard to the front of the radiator ... 20 ± 4 N·m (15 ± 3 lb. ft.)

4N6513 Radiator

(2) 6L9850 Pressure Relief Cap:

Pressure valve must open at ... 25 kPa (4 psi)

Caterpillar Information System:

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