Interference From The Hose Routing Of The Fuel Return Hose Caterpillar

Interference From The Hose Routing Of The Fuel Return Hose

Usage:

Interference From The Hose Routing Of The Fuel Return Hose

CONFIDENTIAL TIBU3839-00

Show/hide table

TECHNICAL INFORMATION BULLETIN	APRIL 23, 2003
EXCAVATORS	345B II (AGS1-1100, ALB1-314, APB1-220, CDY1-308) EXCAVATORS
	Component Code 1274

SUBJECT: INTERFERENCE FROM THE HOSE ROUTING OF THE FUEL RETURN HOSE

PROBLEM:

The hose routing of the fuel return hose may develop interference between the hose assembly and the counterweight. The hose assembly connects the fuel tank to the fuel manifold adapter on the engine. The fuel return hose is a low pressure line.

The usual location of the interference is approximately two feet from the connection at the fuel manifold adapter. Remove the engine access panel in order to inspect the fuel line. The location of the hose assembly is shown in Illustration 1.

SOLUTION:

If interference exists, protect the affected area of the 127-7688 Hose Assembly with a length of 7I-7439 Guard.

An alternative solution is to replace the former 127-7688 Hose Assembly with a new 199-0368 Hose Assembly. The new 199-0368 Hose Assembly has the 7I-7439 Guard installed.

April 23, 2003
Component Code 1274

Illustration 1. Fuel Return Hose
(A) 127-7688 Hose Assembly

COPYRIGHT 2003 CATERPILLAR
ALL RIGHTS RESERVED

Caterpillar Information System:

AIR FILTER CLOGGED (EVENT CODE E272) EVENT ERRONEOUSLY LOGGED ON M300C-SERIES WHEELED EXCAVATORS AIR FILTER CLOGGED (EVENT CODE E272) EVENT ERRONEOUSLY LOGGED ON M300C-SERIES WHEELED EXCAVATORS

A New Relief Valve May Improve The Transmission Hydraulic Control Pressure On Certain M325B Material Handlers A New Relief Valve May Improve The Transmission Hydraulic Control Pressure On Certain M325B Material Handlers

PRIMER/PAINT ON THE FINISHED SURFACE OF CYLINDER RODS FOR SOME WORK TOOLS PRIMER/PAINT ON THE FINISHED SURFACE OF CYLINDER RODS FOR SOME WORK TOOLS

Improvements To The Heating Ventilating And Air Conditioning (HVAC) System Increase Operator Comfort Improvements To The Heating Ventilating And Air Conditioning (HVAC) System Increase Operator Comfort

Loose Connections on Voltage Regulators Can Lead to Above Normal Voltage Output and Regulator Failure Loose Connections on Voltage Regulators Can Lead to Above Normal Voltage Output and Regulator Failure

Check For Clearance When Installing New Electric Starting Motors Check For Clearance When Installing New Electric Starting Motors

Use of the 9Y-5710 Auxiliary Sea Water Pump in 3500 and 3500B applications Use of the 9Y-5710 Auxiliary Sea Water Pump in 3500 and 3500B applications

Automatic Engine Control Regulates Erratically on M300C-Series Wheeled Excavators Automatic Engine Control Regulates Erratically on M300C-Series Wheeled Excavators

Engine Speed Hunting on WEX M300C Series Engine Speed Hunting on WEX M300C Series

MODIFICATION TO PREVENT OIL BLOWING THROUGH THE 165-8460 VENT AS. MODIFICATION TO PREVENT OIL BLOWING THROUGH THE 165-8460 VENT AS.

Hydraulic Oil Overcooling Hydraulic Oil Overcooling

Little or No Heat is Produced by the Heating Unit Little or No Heat is Produced by the Heating Unit

Check Bolt Torque on Flex Plates of Certain 3508B Single Bearing Generator Sets Check Bolt Torque on Flex Plates of Certain 3508B Single Bearing Generator Sets

Certain 3E-5239 Relay Assemblies May Fail Certain 3E-5239 Relay Assemblies May Fail

Bracket Adjustment Improves The Seal Of The Cab Windshield Bracket Adjustment Improves The Seal Of The Cab Windshield

INTERFERENCE BETWEEN THE LIFT ARMS ; CERTAIN WORK TOOLS INTERFERENCE BETWEEN THE LIFT ARMS & CERTAIN WORK TOOLS

Procedure For The Preload Of The Bearings In The Final Drive Procedure For The Preload Of The Bearings In The Final Drive

MAIN CONTROL VALVE PLUGS LEAKS ON M300C-SERIES WHEELED EXCAVATORS MAIN CONTROL VALVE PLUGS LEAKS ON M300C-SERIES WHEELED EXCAVATORS

MODIFICATIONS ARE NECESSARY IN ORDER TO USE THE 165-9889 BROOM BRACKET GP ON ALPHA XR MACHINES MODIFICATIONS ARE NECESSARY IN ORDER TO USE THE 165-9889 BROOM BRACKET GP ON ALPHA XR MACHINES

EXPANSION/SPLITTING OF THE STICK AS A RESULT OF WATER ENTERING THE STICK AND FREEZING DURING EXTREME COLD WEATHER CONDITIONS EXPANSION/SPLITTING OF THE STICK AS A RESULT OF WATER ENTERING THE STICK AND FREEZING DURING EXTREME COLD WEATHER CONDITIONS

Governor Motor Governor Motor

A Shuttle Valve In The Main Hydraulic Control Valve May Cause Error Code 1192-07 And Hydraulic Function Shutdown A Shuttle Valve In The Main Hydraulic Control Valve May Cause Error Code 1192-07 And Hydraulic Function Shutdown

Shock Hazard for the VR-6 and K65-12B Voltage Regulators Shock Hazard for the VR-6 and K65-12B Voltage Regulators

HESITATION TO THE LEFT DURING SWING INITIATION HESITATION TO THE LEFT DURING SWING INITIATION