- Articulated Truck:
- 725 (S/N: AFX1-UP; B1L1-UP)
- 730 (S/N: AGF1-UP; B1M1-UP)
- 730 EJECTOR (S/N: B1W1-UP)
- 735 (S/N: AWR1-UP; B1N1-UP)
- 740 (S/N: AXM1-UP; B1P1-UP)
- 740 EJECTOR (S/N: AZZ1-UP; B1R1-UP)
- 730 (S/N: AGF1-UP; B1M1-UP)
Introduction
This Technical Information Bulletin details the history of test lines on the listed machines. The purpose of this Technical Information Bulletin is as a reference for the history of changes to the test lines. The reference will ensure that service personnel can identify machines with test lines that are not connected to the appropriate test points.
For any machine, it is important to check if any of the test lines are disconnected before conducting a Testing and Adjusting procedure that requires the use of the test panel. If a required test line has been disconnected, connect the required test line to the required test point and remember to disconnect the test line upon completion of the Testing and Adjusting procedure.
Problem
Initially, the routing of some of the test lines across the engine was considered poor. The poor routing of those test lines could result in leaks.
At a later stage, leakage from any of the test lines was considered to be a potential problem for the containment of oil.
Solution
The first production of the listed machines left the factory with test lines that lead directly from the test panel to the appropriate test points on the tractor of the machine.
When specific test lines were identified as having the potential of leaking, the identified test lines were disconnected before the machine left the factory. The identified test lines were plugged and the appropriate test points were capped. The test lines were folded away from the test points and secured with cable straps. At the same time, a Technical Information Bulletin and Service Letter were published in order to identify the potential problem to the field. Subsequently, earlier machines may have been reworked in order to disconnect the identified test lines as a permanent configuration. For 725 (S/N: AFX) and 730 (S/N: AGF), the lines that were affected were different because earlier machines had different hydraulic systems.
Later when all the test lines were identified as a potential source of oil leaks, all the test lines were disconnected from the test points before the machines left the factory. All of the test lines were plugged. All of the test points were capped. Each of the test lines were moved to a safe position and the test lines were secured with cable straps. In order to avoid confusion in identifying the correct test line for a test point, all of the test lines were marked with a colored tag.
Finally on 725 (S/N: B1L), 730 (S/N: B1M) and 730 EJECTOR (S/N: B1W), the test lines were no longer installed from the factory. For testing and adjusting procedures, service personnel must connect to the test points that are installed on the different machine components.
Important Notice
For any machine, it is important to check if any of the test lines are disconnected before conducting a Testing and Adjusting procedure that requires the use of the test panel. If a required test line has been disconnected, connect the required test line to the required test point and remember to disconnect the test line upon completion of the Testing and Adjusting procedure.
History of Changes to the Test Lines
Test Lines that were Disconnected on 725 (S/N: AFX) and 730 (S/N: AGF) Before the Change in the Hydraulic System
The following 725 Articulated Trucks might have the specified test lines that were disconnected in the field:
- AFX1-1178
The following 730 Articulated Trucks might have the specified test lines that were disconnected in the field:
- AGF1-1091
Illustration 1 | g01283128 |
Test panel on 725 and 730 |
Illustration 2 | g01283124 |
Legend for the 725 and 730 Test Panel |
Refer to Illustration 1, Illustration 2 and Table 1 for the position of the remote test points on the test panel and the purpose of the test points on the 725 and 730 Articulated Trucks.
Test Points     | ||
---|---|---|
Position on Panel     | 725 730     |
Item     |
A     | Hoist (Ejector) System     | Not Disconnected     |
B     | Secondary Steering System     | Not Disconnected     |
C     | Front Brake Pressure     | 1     |
D     | Combiner Valve (Brake) Brake Pump     |
2     |
E     | Output Transfer Gear Differentials     |
Not Disconnected     |
F     | Steering Load Sensing Pressure     |
Not Disconnected     |
G     | Steering System     | Not Disconnected     |
H     | Fan Drive System     | Not Disconnected     |
J     | Combiner Valve (Brake) Hoist Pilot Pressure     |
3     |
Refer to Illustration 3 and Table 1 for the purpose of the test points and positions of the test points on the Machine.
For any machine, it is important to check if any of the test lines are disconnected before conducting a Testing and Adjusting procedure that requires the use of the test panel. If a required test line has been disconnected, connect the required test line to the required test point and remember to disconnect the test line upon completion of the Testing and Adjusting procedure.
Illustration 3 | g01283293 |
725 (S/N: AFX1-1178) and 730 (S/N: AGF1-1091) Articulated Trucks 184-6320 Pressure Test Lines . (A) Test point for the Hoist (Ejector) System (B) Test point for the Secondary Steering System (C) Test point for the Front Brake Pressure (D) Test point for the Brake Pump at the Combiner Valve (Brake) (E) Test point for the Output Transfer Gear and Differentials (F) Test point for the Load Sensing Pressure for the Steering System (G) Test point for Steering System (H) Test point for the Fan Drive System (J) Test point for the Pilot Pressure for the Hoist System at the Combiner Valve (Brake) |
Locations of Disconnected Test Points
Illustration 4 | g01283219 |
View from the front of the machine and looking at the area of the right suspension cylinder |
Illustration 5 | g01283225 |
View at the rear of the cab and looking at the area behind the right suspension cylinder |
Initial Group of Test Lines that were Disconnected on 725 (S/N: AFX; B1L), 730 (S/N: AGF; B1M) and 730 EJECTOR (S/N: B1W)
The following 725 Articulated Trucks might have the specified test lines that were disconnected in the field:
- AFX1179-1586
The following 725 Articulated Trucks have specific test lines that were disconnected at the factory:
- AFX1587-UP
- B1L1-881
The following 730 Articulated Trucks might have the specified test lines that were disconnected in the field:
- AGF1092-1502
The following 730 Articulated Trucks have specific test lines that were disconnected at the factory:
- AGF1503-UP
- B1M1-802
The following 730 EJECTOR Articulated Trucks might have the specified test lines that were disconnected in the field:
- B1W1-169
The following 730 EJECTOR Articulated Trucks have specific test lines that were disconnected at the factory:
- B1W170-214
Illustration 6 | g01243195 |
Test panel on 725, 730 and 730 EJECTOR |
Illustration 7 | g01242889 |
Legend for the 725, 730 and 730 EJECTOR Test Panel |
Refer to Illustration 6, Illustration 7 and Table 2 for the position of the remote test points on the test panel and the purpose of the test points on the 725, 730 and 730 EJECTOR Articulated Trucks.
Test Points     | ||
---|---|---|
Position on Panel     | 725 730 730 EJECTOR     |
Item     |
A     | Hoist (Ejector) System     | Not Disconnected     |
B     | Steering System     | Not Disconnected     |
C     | Hoist (Ejector) System Pilot Pressure     |
Not Disconnected     |
D     | Front Brake Pressure     | 1     |
E     | Piston Pump Steering and Hoist (Ejector)     |
Not Disconnected     |
F     | Fan Drive System     | Not Disconnected     |
G     | Brake Charging     | Not Disconnected     |
H     | Parking Brake System     | Not Disconnected     |
J     | Output Transfer Gear Differentials     |
Not Disconnected     |
K     | Piston Pump Brake, Hoist (Ejector) and Fan     |
Not Disconnected     |
Refer to Illustration 8 and Table 2 for the purpose of the test points and positions of the test points on the Machine.
For any machine, it is important to check if any of the test lines are disconnected before conducting a Testing and Adjusting procedure that requires the use of the test panel. If a required test line has been disconnected, connect the required test line to the required test point and remember to disconnect the test line upon completion of the Testing and Adjusting procedure.
Illustration 8 | g01243224 |
725 (S/N: AFX1179-UP; B1L1-UP), 730 (S/N: AGF1092-UP; B1M1-UP) and 730 EJECTOR (S/N: B1W1-UP) Articulated Trucks 234-5611 Pressure Test Lines . (A) Test point for the Hoist (Ejector) System (B) Test point for the Steering System (C) Test point for the Pilot Pressure for the Hoist (Ejector) System (D) Test point for the Front Brake Pressure (E) Test point for the Piston Pump (Steering and Hoist) (F) Test point for the Fan Drive System (G) Test point for Brake Charging (H) Test point for the Parking Brake System (J) Test point for the Output Transfer Gear and Differentials (K) Test point for the Piston Pump (Brake, Hoist and Fan) |
Locations of Test Points
Illustration 9 | g01283968 |
View from the front of the machine and looking at the area of the right suspension cylinder (1) Test point for the Front Brake Pressure |
Initial Group of Test Lines that were Disconnected on 735 (S/N: AWR; B1N), 740 (S/N: AXM; B1P) and 740 EJECTOR (S/N: AZZ; B1R)
The following 735 Articulated Trucks might have the specified test lines that were disconnected in the field:
- AWR1-852
The following 735 Articulated Trucks have specific test lines that were disconnected at the factory:
- AWR853-UP
- B1N1-535
The following 740 Articulated Trucks might have the specified test lines that were disconnected in the field:
- AXM1-2023
The following 740 Articulated Trucks have specific test lines that were disconnected at the factory:
- AXM2024-UP
- B1P1-1334
The following 740 EJECTOR Articulated Trucks might have the specified test lines that were disconnected in the field:
- AZZ1-383
The following 740 EJECTOR Articulated Trucks have specific test lines that were disconnected at the factory:
- AZZ384-UP
- B1R1-241
Illustration 10 | g01243213 |
Test panel on the 735, 740 and 740 EJECTOR |
Illustration 11 | g01242889 |
Legend for the 735, 740 and 740 EJECTOR Test Panel |
Refer to Illustration 10, Illustration 11 and Table 3 for the position of the remote test points on the test panel and the purpose of the test points on the 735, 740 and 740 EJECTOR Articulated Trucks.
Test Points     | ||
---|---|---|
Position on Panel     | 735 740 740 EJECTOR     |
Item     |
A     | Hoist System (S/N: AWR), (S/N: AXM) and (S/N: AZZ) only     |
Not Disconnected     |
B     | Secondary Steering System     | 3     |
C     | Front Brake Pressure     | 1     |
D     | Combiner Valve (Brake) Brake Pump     |
Not Disconnected     |
E     | Output Transfer Gear and Differentials     | Not Disconnected     |
F     | Steering Load Sensing Pressure     |
5     |
G     | Steering System     | 4     |
H     | Fan Drive System     | Not Disconnected     |
J     | Combiner Valve (Brake) Hoist Pilot Pressure     |
2     |
K     | Center Brake Pressure     | Not Disconnected     |
Refer to Illustration 12 and Table 3 for the purpose of the test points and positions of the test points on the Machine.
For any machine, it is important to check if any of the test lines are disconnected before conducting a Testing and Adjusting procedure that requires the use of the test panel. If a required test line has been disconnected, connect the required test line to the required test point and remember to disconnect the test line upon completion of the Testing and Adjusting procedure.
Illustration 12 | g01283624 |
735 (S/N: AWR1-UP), 740 (S/N: AXM1-UP) and 740 EJECTOR (S/N: AZZ1-UP) Articulated Trucks 179-1712 Pressure Test Lines . 735 (S/N: B1N1-UP), 740 (S/N: B1P1-UP) and 740 EJECTOR (S/N: B1R1-UP) Articulated Trucks 251-3503 Pressure Test Lines . (A) Test point for the Hoist (Ejector) System (B) Test point for the Secondary Steering System (C) Test point for the Front Brake Pressure (D) Test point for the Brake Pump at the Combiner Valve (Brake) (E) Test point for the Output Transfer Gear and Differentials (F) Test point for the Load Sensing Pressure for the Steering System (G) Test point for Steering System (H) Test point for the Fan Drive System (J) Test point for the Pilot Pressure for the Hoist System at the Combiner Valve (Brake) (K) Test point for the Center Brake Pressure |
Locations of Disconnected Test Points
Illustration 13 | g01282563 |
735 (S/N: AWR), 740 (S/N: AXM) and 740 EJECTOR (S/N: AZZ) The hood is raised and the cab panel is removed for photographic clarity. View at the right side of the cab |
Illustration 14 | g01283034 |
735 (S/N: B1N), 740 (S/N: B1P) and 740 EJECTOR (S/N: B1R) The floor panel is raised and the cab panel is removed for photographic clarity. View at the right side of the cab |
Illustration 15 | g01282566 |
The cab panel is removed for photographic clarity. View at the right side of the cab |
Illustration 16 | g01282567 |
The floor panel is raised for photographic clarity. View at the right side of the cab |
Illustration 17 | g01282568 |
735 (S/N: AWR), 740 (S/N: AXM) and 740 EJECTOR (S/N: AZZ) The hood is raised for photographic clarity. View at the right side of the engine |
Illustration 18 | g01283037 |
735 (S/N: B1N), 740 (S/N: B1P) and 740 EJECTOR (S/N: B1R) The floor panel is raised for photographic clarity. View at the right side of the cab |
All Test Lines that were Disconnected on 725 (S/N: B1L), 730 (S/N: B1M) and 730 EJECTOR (S/N: B1W)
The following 725 Articulated Trucks have all test lines that are disconnected at the factory:
- B1L880-1414
The following 730 Articulated Trucks have all test lines that are disconnected at the factory:
- B1M803-1308
The following 730 EJECTOR Articulated Trucks have all test lines that are disconnected at the factory:
- B1W215-262
Illustration 19 | g01243195 |
Test Panel on the 725, 730 and 730 EJECTOR |
Illustration 20 | g01242889 |
Legend for 725, 730 and 730 EJECTOR Test Panel |
Refer to Illustration 19, Illustration 20 and Table 6 for the position of the remote test points on the test panel and the purpose of the test points on the 725, 730 and 730 EJECTOR Articulated Trucks.
Test Points     | ||
---|---|---|
Position on Panel     | 725 730 730 EJECTOR     |
Color Code     |
A     | Hoist (Ejector) System     | Redish Brown     |
B     | Steering System     | Yellow     |
C     | Hoist (Ejector) System Pilot Pressure     |
Orange     |
D     | Front Brake Pressure     | Red     |
E     | Piston Pump Steering and Hoist (Ejector)     |
Light Green     |
F     | Fan Drive System     | Dark Green     |
G     | Brake Charging     | Light Blue     |
H     | Parking Brake System     | Dark Blue     |
J     | Output Transfer Gear Differentials     |
Gray     |
K     | Piston Pump Brake, Hoist (Ejector) and Fan     |
White     |
Refer to Illustration 21 and Table 6 for the purpose of the test points and positions of the test points on the Machine.
For any machine, it is important to check if any of the test lines are disconnected before conducting a Testing and Adjusting procedure that requires the use of the test panel. If a required test line has been disconnected, connect the required test line to the required test point and remember to disconnect the test line upon completion of the Testing and Adjusting procedure.
Illustration 21 | g01243224 |
725 (S/N: B1L1-1414), 730 (S/N: B1M1-1308) and 730 EJECTOR (S/N: B1W1-262) Articulated Trucks 234-5611 Pressure Test Lines . (A) (Color Code: Redish Brown) Test point for the Hoist (Ejector) System (B) (Color Code: Yellow) Test point for the Steering System (C) (Color Code: Orange) Test point for the Pilot Pressure for the Hoist (Ejector) System (D) (Color Code: Red) Test point for the Front Brake Pressure (E) (Color Code: Light Green) Test point for the Piston Pump (Steering and Hoist) (F) (Color Code: Dark Green) Test point for the Fan Drive System (G) (Color Code: Light Blue) Test point for Brake Charging (H) (Color Code: Dark Blue) Test point for the Parking Brake System (J) (Color Code: Gray) Test point for the Output Transfer Gear and Differentials (K) (Color Code: White) Test point for the Piston Pump (Brake, Hoist and Fan) |
Locations of Test Points
Illustration 22 | g01244711 |
The cab raised for photographic clarity. The test point is on the left side of the main control valve. (A) (Color Code: Redish Brown) Test point for the Hoist (Ejector) System |
Illustration 23 | g01244712 |
The cab raised for photographic clarity. The test point is on the left side of the main control valve. (B) (Color Code: Yellow) Test point for the Steering System |
Illustration 24 | g01244713 |
The cab raised for photographic clarity. The test point is on the right side of the main control valve. (C) (Color Code: Orange) Test point for the Pilot Pressure for the Hoist (Ejector) System |
Illustration 25 | g01244726 |
View from the front of the machine and looking at the area of the right suspension cylinder (D) (Color Code: Red) Test point for the Front Brake Pressure |
Illustration 26 | g01244727 |
The cab raised for photographic clarity. The test point is on the right side of the main control valve. (E) (Color Code: Light Green) Test point for the Piston Pump (Steering and Hoist) |
Illustration 27 | g01245106 |
The cab raised for photographic clarity. The test point is on the right side of the main control valve. (F) (Color Code: Dark Green) Test point for the Fan Drive System (K) (Color Code: White) Test point for the Piston Pump (Brake, Hoist and Fan) |
Illustration 28 | g01245107 |
The cab raised for photographic clarity. The test point is on the right side of the main control valve. (G) (Color Code: Light Blue) Test point for Brake Charging |
Illustration 29 | g01245112 |
The cab raised for photographic clarity. The test point is on the left side of the main control valve. (H) (Color Code: Dark Blue) Test point for the Parking Brake System |
Illustration 30 | g01245114 |
View from the underside of the machine in the area at the rear of the output transfer gear (J) (Color Code: Gray) Test point for the Output Transfer Gear and Differentials |
All Test Lines that were Disconnected on 735 (S/N: B1N), 740 (S/N: B1P) and 740 EJECTOR (S/N: B1R)
The following 735 Articulated Trucks have all test lines that are disconnected at the factory:
- B1N536-UP
The following 740 Articulated Trucks have all test lines that are disconnected at the factory:
- B1P1335-UP
The following 740 EJECTOR Articulated Trucks have all test lines that are disconnected at the factory:
- B1R242-UP
Illustration 31 | g01243213 |
Test panel on 735, 740 and 740 EJECTOR |
Illustration 32 | g01242889 |
Legend for 735, 740 and 740 EJECTOR Test Panel |
Refer to Illustration 31, Illustration 32 and Table 5 for the position of the remote test points on the test panel and the purpose of the test points on the 735, 740 and 740 EJECTOR Articulated Trucks.
Test point (A) that was originally connected to the hoist control valve is no longer serviced by the test panel. The pressure of the ejector system is now tested by using a test point that is mounted on top of the hoist control valve. Access to this test point is via raising the cab. Refer to Illustration 34 in ""Locations of Test Points" ".
Test Points     | ||
---|---|---|
Position on Panel     | 735 740 740 EJECTOR     |
Color Code     |
A     | Unused     |     |
B     | Secondary Steering System     | Yellow     |
C     | Front Brake Pressure     | Orange     |
D     | Piston Pump Brake     |
Red     |
E     | Output Transfer Gear and Differentials     | Light Green     |
F     | Steering Load Sensing Pressure     |
Dark Green     |
G     | Steering System     | Light Blue     |
H     | Fan Drive System     | Dark Blue     |
J     | Hoist (Ejector) System Pilot Pressure     |
Gray     |
K     | Center Brake Pressure     | White     |
Refer to Illustration 33 and Table 5 for the purpose of the test points and positions of the test points on the Machine.
For any machine, it is important to check if any of the test lines are disconnected before conducting a Testing and Adjusting procedure that requires the use of the test panel. If a required test line has been disconnected, connect the required test line to the required test point and remember to disconnect the test line upon completion of the Testing and Adjusting procedure.
Illustration 33 | g01243227 |
735 (S/N: B1N1-UP), 740 (S/N: B1P1-UP) and 740 EJECTOR (S/N: B1R1-UP) Articulated Trucks 251-3503 Pressure Test Lines . (B) (Color Code: Yellow) Test point for the Secondary Steering System (C) (Color Code: Orange) Test point for the Front Brake Pressure (D) (Color Code: Red) Test point for the Piston Pump (Brake) (E) (Color Code: Light Green) Test point for the Output Transfer Gear and Differentials (F) (Color Code: Dark Green) Test point for the Load Sensing Pressure for the Steering (G) (Color Code: Light Blue) Test point for the Steering System (H) (Color Code: Dark Blue) Test point for the Fan Drive System (J) (Color Code: Gray) Test point for the Pilot Pressure for the Hoist (Ejector) System (K) (Color Code: White) Test point for the Center Brake Pressure |
Locations of Test Points
Illustration 34 | g01243566 |
The cab raised for photographic clarity. The test point is above the hoist control valve. Test point for the Hoist (Ejector) System |
Illustration 35 | g01243567 |
The underside of the cab and on the right hand side next to the hydraulic tank (B) (Color Code: Yellow) Test point for the Secondary Steering System (G) (Color Code: Light Blue) Test point for the Steering System |
Illustration 36 | g01243568 |
The underside of the cab on the right hand side The cover on the right hand side of the cab is removed for photographic clarity. (C) (Color Code: Orange) Test point for the Front Brake Pressure (K) (Color Code: White) Test point for the Center Brake Pressure |
Illustration 37 | g01243570 |
View from the left hand side steering cylinder and looking at the area of the rear of the transmission (D) (Color Code: Red) Test point for the Piston Pump (Brake) (J) (Color Code: Gray) Test point for the Pilot Pressure for the Hoist (Ejector) System |
Illustration 38 | g01243576 |
View from the underside of the machine and looking at the area of the rear of the transmission (D) (Color Code: Red) Test point for the Piston Pump (Brake) (J) (Color Code: Gray) Test point for the Pilot Pressure for the Hoist (Ejector) System |
Illustration 39 | g01243603 |
View from the underside of the machine in the area at the rear of the output transfer gear (E) (Color Code: Light Green) Test point for the Output Transfer Gear and Differentials |
Illustration 40 | g01243606 |
The underside of the cab on the right hand side next to the hydraulic tank (F) (Color Code: Dark Green) Test point for the Load Sensing Pressure for the Steering |
Illustration 41 | g01243609 |
The rear of the cab on the right hand side The cover to the radiator is removed for photographic clarity. (H) (Color Code: Dark Blue) Test point for the Fan Drive System |
All Test Lines Were Removed on 725 (S/N: B1L), 730 (S/N: B1M) and 730 EJECTOR (S/N: B1W)
The following 725 Articulated Trucks no longer have test lines that are installed from the factory:
- B1L1415-UP
The following 730 Articulated Trucks no longer have test lines that are installed from the factory:
- B1M1309-UP
The following 730 EJECTOR Articulated Trucks no longer have test lines that are installed from the factory:
- B1W263-UP
Locations of Test Points
Test Points     | |
---|---|
Test Point     | 725 730 730 EJECTOR     |
A     | Hoist (Ejector) System     |
B     | Steering System     |
C     | Hoist (Ejector) System Pilot Pressure     |
D     | Front Brake Pressure     |
E     | Piston Pump Steering and Hoist (Ejector)     |
F     | Fan Drive System     |
G     | Brake Charging     |
H     | Parking Brake System     |
J     | Output Transfer Gear Differentials     |
K     | Piston Pump Brake, Hoist (Ejector) and Fan     |
Illustration 42 | g01359764 |
(A) This test port is for the hoist system or the ejector system. This test port is located on the back, left side of the main control valve. (H) This test port is for the parking brake system. This test port is located on the middle, left side of the main control valve. |
Illustration 43 | g01359766 |
(B) This test port is for the steering system. This test port is located on the front, left side of the main control valve. |
Illustration 44 | g01359768 |
(C) This test port is for the pilot pressure for the hoist system or the ejector system. This test port is located on the top, right side of the main control valve in the middle. |
Illustration 45 | g01359770 |
(D) This test port is for the front brake pressure. This test port is located on the right side of the engine just in front of the cab. |
Illustration 46 | g01359772 |
(E) This test port is for the piston pump for the steering system and the hoist system or the ejector system. This test port is located on the top right side of the main control valve at the back. |
Illustration 47 | g01359774 |
(F) This test port is for the fan drive system. This test port is located on the bottom, right side of the main control valve at the back. (K) This test port is for the piston pump for the brake system, the hoist system or the ejector system, and the fan system. This test port is located on the top right side of the main control valve at the front. |
Illustration 48 | g01359769 |
(G) This test port is for brake charging. This test port is located on the bottom right side of the main control valve in the middle. |
Illustration 49 | g01359775 |
(J) This test port is for the output transfer gear and the differentials. This test port is located at the rear of the hoist control valve or the ejector control valve. |