PUMP GP-WATER 1009347 - Caterpillar

9L6233 Top Ring (1) has the mark "UP-1".*Install 9L9316 or 2W8045 Oil Control Ring (2) with the gap in the spring 180° away from the gap in the ring. Use 5P3519 PISTON RING GROOVE GAUGE to check the top ring groove only. For instructions on the use of the gauge, see the GUIDELINE FOR REUSABLE PARTS; PISTONS AND CYLINDER LINERS, Form No. SEBF8001. Two different pistons are used in 3208 Truck engines. One piston has a crater volume of 3.08 .07 in.3(50.4 1.2 cm3), and the other piston has a crater volume of 3.59 .07 in.3 (58.8 1.2 cm3). Check the part number stamped on the top of the piston, and refer to the parts book to be sure the correct replacement piston is used.
The correct piston must be installed in the engine. If the wrong piston is installed, much damage to the engine will result.
(3) Bore in piston for pin ... 1.5005 to 1.5009 in.(38.113 to 38.123 mm)Clearance between pin and bore in piston (new) ... .0004 to .0012 in.(0.010 to 0.030 mm)Maximum permissible clearance between piston pin and bore in piston (worn) ... .003 in.(0.08 mm)