COUPLING 5L8856 - Caterpillar

DUO CONE SEALS
Illustration 1 g03150736Background
To reduce the risk of leaks or failures, assemble the duo cone seals correctly. This document applies to cast, formed, conventional, and inverted Duo-Cone seals and to installations on factory assembly lines, at dealer shops, and in the field.
Illustration 2 g03150396
Duo-Cone seal
(1) Seal ring
(2) Rubber toric The two main components of a Duo-Cone seal are shown in Illustration 2.
Illustration 3 g03150397
Duo-Cone seal assembly
The standard naming nomenclatures for Duo-Cone seals are listed below. (1) Seal Ring - The metal component of a seal group. (2) Rubber Toric (Load Ring) - Elastomeric component of a seal group that applies a face load in the application. This o-ring style seal retains oil and excludes debris. (3) Housing (Retainer) Lip - The lip inside the housing (retainer) that helps to retain the seal ring/rubber toric during installation. (4) Housing Ramp - The angled ramp that is located on the housing. Maintaining the proper surface finish is critical. (5) Housing Retainer - The recess in which a seal ring and a load ring are installed. (6) Seal Face - The “active surface” of the seal. In a finished seal the face contains the seal band, seal band to taper radius, and taper. (7) Seal Ramp - The inclined surface on the exterior of the Duo-Cone seal ring that positions the toric between the seal ring and the housing. (8) Seal Retaining Lip - The function of the retaining lip is to provide a seat for the toric. This radius allows the toric to stay on the ring for ease of assembly. (9) Installation Tool - Assembly tool used to install the Duo-Cone seal into housing. (10) Seal Assembled Height (not shown in Illustration 2) - The final installation height of Duo-Cone seal once installed into the housing (retainer). Assembled height measured in three places approximately 120 degrees apart. Not to exceed 1.0 mm (0.04 inch) variation.For a full Duo-Cone seal assembly there are three components that comprise a full assembly: (1) Seal ring (2) Rubber toric (5) Housing retainerThese three components help create three separate and distinct sealing areas. If one aspect of the seal assembly goes wrong, then a leak path may occur at one or more of following sealing locations.
Metal-to-Metal Face
Metal Seal Ring-to-Toric
Toric-to-HousingGENERAL INFORMATION
Recommended Cleaning Wipes
Refer to Table for approved lint free wipes.Cleaners used should not be oil-based products.
Table 1
Lint Free Wipe Crib IBM Number CAT Part Number
Chemtool CT Clean 15861 Wipe With Cleaner 3-0124698 169-5420
Chemtool Lint-Free Wipes 3-0080298 265-2256
Kimtex Lint-Free Polypropylene Towels 3-0039125
New Pig Low-Lint Wipes WIP230
WIP232 Service Kits
Service kits and products are available. A list of approved Duo-Cone seal service items is listed below in Table 2.
Table 2
Dealer Service Network Part Number Dealer Service Network Description Description Manufacturer CAT IBM Crib Part Number
169-5418 Cat Seal Lubricant 1 Gallon Seal Lubricant Chemtool None
169-5420 Cat Duo-Cone Seal Cleaner 1 Gallon Seal Cleaner Chemtool None
169-0503 Duo-Cone Seal Installation Kit Seal Installation Kit CAT None STORAGE
Seal and Seal Ring Storage
Contamination Storage Requirements - Regardless of size or shape, seals