HOSE AS 4646842 - Caterpillar

Put identification marks on the pump housings (1) and separate the housings. Remove gasket (2) between the housings.
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Remove locknut (4), the washer, and gear (3).
Remove retainer ring (5) with Tooling (A).
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Remove nut (6) from the impeller shaft.
Use Tooling (B) and a suitable press to remove the impeller shaft from the impeller.
Remove impeller (7) from the housing.
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Remove water pump seal assembly (8). Separate the components. Inspect each component.
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Use Tooling (B) and a suitable press to remove the impeller shaft completely out of the pump housing.
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Remove key (9) and shims (11). Remove retainer ring (10 ) from bearing with Tooling (C).
Remove key (13), spacer (12), and the retainer ring. Remove the retainer ring with Tooling (C).
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Use Tooling (D) and a suitable press. Push the shaft from bearings (14) and spacer (15).
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Remove lock (17) and remove gear assembly (16).
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Use Tooling (D) and a suitable press to push gear from the shaft.
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Use Tooling (D) and a suitable press. Push the shaft from bearings (18) and spacer (19).
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Remove ceramic ring (20).
Remove slinger (21) from the pump housing.
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Remove lip seal (22) from the pump housing.