9T0656 Ring for Caterpillar Equipment

9T0656 is a transmission seal back-up ring used in sealing assemblies on Caterpillar equipment. The ring is made of plastic and is intended to help prevent seal extrusion in high-pressure applications and during pressure surges. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

Fitment

The 9T0656 ring is used on the following Caterpillar machine models and series:

• Skidders: 515, 525, 525B, 525C, 535B, 535C, 545, 545C.
• Backhoe loaders: 416, 416B, 416C, 416D, 420D, 424D, 426, 426B, 426C, 428, 428B, 428C, 428D, 430D, 432D, 436, 436B, 436C, 438, 438B, 438C, 438D, 442D, 446, 446B, 446D.

Compatibility should be checked against the machine model, serial number and the part number of the seal assembly before installation.

Cross-reference numbers

• 9T-0656
• 9T0656

9T-0656 is the Caterpillar equipment part number associated with this ring. The number may be shown with or without the hyphen depending on the parts catalogue or ordering system.

Specifications

Application

The ring is installed as a supporting element in a sealing system. Its function is to support the seal against extrusion when the assembly is exposed to high pressure or short-term pressure increases. The listed dimensions are the supplied product specifications and should be compared with the removed part and the applicable Caterpillar parts documentation.