3408 VEHICULAR ENGINE Caterpillar


Water Pump

Usage:

(1) Torque for three long studs in cylinder block ... 20 ± 3 lb. ft.(25 ± 4 N·m)

Put 9S3263 Thread Lock on threads of short stud in front housing.

(2) Oil seal. Put engine oil on the seal lip. Assemble with the lip toward the bearings.

(3) Seal. Put a thin layer of engine oil in the bore for the seal.

(4) Rubber water seal and ceramic ring:

a. Put clean water on the seal and ring.

b. Use the seal installation tool (part of the replacement seal assembly) and hand pressure to install the rubber seal and ceramic ring as a unit in the housing bore. Make sure the identification marks (holes) on the ceramic ring face are installed inside the rubber seal.

(5) Seal assembly:

a. Remove the spring from the seal.

b. Put clean water inside the seal assembly.

c. Use the seal installation tool (part of the replacement seal assembly) and hand pressure to install the seal assembly on the shaft until the carbon face makes light contact with the smooth face of the ceramic ring.

d. Install the spring.

(6) Torque for the nut that holds the impeller ... 28 ± 2 lb. ft.(39 ± 3 N·m)

(7) Clearance between impeller and housing ... .022 to .059 in.(0.56 to 1.50 mm)

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