9P7757 Gear-Sun for Caterpillar Equipment

The 9P7757 gear-sun is a steel spur gear used in power-transmission assemblies of Caterpillar earthmoving compactors and Caterpillar engine-machine applications. It is intended for use with the Caterpillar equipment models listed below. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is identified by the Caterpillar reference number 9P-7757, also written without the hyphen as 9P7757. The component has a cylindrical gear form with externally arranged teeth and is supplied as an individual gear; the available product data does not indicate that additional parts are included.

Fitment

The gear is listed for the following Caterpillar equipment and engine-machine applications:

• Caterpillar earthmoving compactors
• Caterpillar engine-machine applications
• Caterpillar 816F
• Caterpillar 816F II
• Caterpillar 815B
• Caterpillar 815F
• Caterpillar 815F II
• Caterpillar 3176C
• Caterpillar 3196
• Caterpillar 3306
• Caterpillar 3406
• Caterpillar 3406B

Compatibility should be checked against the machine model, serial-number range and the part number installed in the specific assembly before ordering, because the available fitment information identifies the equipment and models but does not provide serial-number restrictions.

Cross-reference numbers

9P7757 and 9P-7757 designate the same part-number sequence, with the second format using a hyphen. No additional supplier or equipment-manufacturer cross-reference numbers are provided in the available product data.

Specifications

The inch and centimetre measurements are reproduced according to the available part data. The listed width and depth values are provided as separate product dimensions; the available specification does not identify a different geometric reference for these measurements.