2006/09/11 Caterpillar


A New Exhaust Bypass Valve (Wastegate) is Used {1057}

Usage:

793B 1HL
Off-Highway Truck/Tractor:
793 (S/N: 3SJ1-UP)
793B (S/N: 1HL1-UP)
793C (S/N: 4AR1-UP; ATY1-UP; 4GZ1-UP)
Service Magazine SEPD0774, 07 March 2005, "New Exhaust Bypass Valve (Wastegate)". Disregard the above article. Use the following information.

Description of Change:




Illustration 1g01300694

Typical example

A new exhaust bypass valve is used. A snap ring has been installed in order to improve the retention of the valve guide.

Adaptable To:




Illustration 2g01300827

Typical expanded view

(1) Snap ring

(2) Guide

(3 ) Base





Illustration 3g01301049

Installed Snap ring

(1) Snap ring

(2) Guide

(3 ) Base

The former 136-4405 Exhaust Bypass and the former 257-6358 Exhaust Bypass have been cancelled and replaced by the new 298-5340 Exhaust Bypass. The new exhaust bypass valve is adaptable to all of the Machines that are listed above.

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