735, 740 and 740 EJECTOR Articulated Trucks, Hydraulic Test Lines May Fail [TIBU4441]

HYDRAULIC SYSTEM

LINES GP-HYDRAULIC

735, 740 and 740 EJECTOR Articulated Trucks, Hydraulic Test Lines May Fail

CONFIDENTIAL TIBU4441-01

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TECHNICAL INFORMATION BULLETIN	January 12, 2005
Articulated Trucks	THIS TIB REPLACES THE JANUARY 5, 2005, ARTICULATED TRUCK TIB, COMPONENT CODE 5057, "735, 740 AND 740 EJECTOR ARTICULATED TRUCKS, HYDRAULIC TEST LINES MAY FAIL". IGNOR THE FORMER PUBLIAVSION. 735 (AWR1-852) 740 (AXM1-2023) 740 EJECTOR (AZZ1-383)
	Component Code(s) 5057

SUBJECT: 735, 740 AND 740 EJECTOR ARTICULATED TRUCKS, HYDRAULIC TEST LINES MAY FAIL

PROBLEM:

Improper routing and manufacturing of hydraulic test lines may allow oil to contact the hot surface of the exhaust. This is a containment action. A Containment PIP is forthcoming.

Note: Please claim any work carried out in this TIB to the forthcoming PIP.

SOLUTION:

Disconnect the five test lines that are identified in the following Table and Illustrations. Before you disconnect the test lines, first mark the test lines and test points with suitable identification labels and marks. This is for the purpose of identifying the test lines and test points at a later date.

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Item	Test Point	Test Line Part Number Type 1	Test Line Part Number Type 2
1	Front Brake Pressure	189-5344 Hose	257-8092 Hose
2	Rear Brake Pressure	189-5344 Hose	257-8092 Hose
3	Main Steering Pressure	198-7583 Hose	257-8083 Hose
4	Secondary Steering Pressure	198-7583 Hose	257-8083 Hose
5	Load Sensing Pressure	198-7588 Hose	257-8096 Hose

Remove the cover from the right side of the cab. Disconnect test lines (1) and (2).

Plug the test lines with two 6V-9508 Plugs (6) and cap the test points with two 6V-9829 Caps (7). Move the test lines aside and secure the test lines in place with a suitable cable strap (8). Ensure that the test lines do not crimp. Reinstall the cover.

Raise the footplate on the right side of the cab. Disconnect test lines (3) and (4).

Plug the test lines with two 6V-9508 Plugs (6) and cap the test points with two 6V-9829 Caps (7).

Move the test lines aside and secure the test lines in place with a suitable cable strap (8). Ensure that the test lines do not crimp. Lower the footplate.

Raise the hood. Disconnect test line (5).

Plug the test line with a 6V-9508 Plug (6) and cap the test point with a 6V-9829 Cap (7). Move the test line aside and secure the test line in place with a suitable cable strap (8). Ensure that the test line does not crimp. Lower the hood.