2008/01/21 Caterpillar

Inspection of Steel Braided Hoses with Reusable Connectors {7553, 7554}

Usage:

3512 1LM

Caterpillar Products:
3500C Engines
Engine: Commercial
3500 and 3500B Family All
Engine: Commercial
3500 and 3500B Family All

The reusable connector on some steel braided hoses may be incorrectly installed. Refer to Illustration 1. If the gap between the permanent portion of the connector (1) and the swivel portion of the connector (2) is too large, a leak may result. If the fluid in the hose is flammable, a fire may result.

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Illustration 1	g01447349
Typical steel braided hose with reusable fitting (1) Permanent portion of the connector (2) Swivel portion of the connector

Inspect the gap between the permanent portion of the connector (1) and the swivel portion of the connector (2). Zero gap is acceptable. The maximum allowable gap is 1.57 mm (0.062 inch). A feeler gauge can be used in order to measure the gap with acceptable accuracy. Replace the hose assembly if the gap exceeds 1.57 mm (0.062 inch).

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