Figure 69. Stracker Cable Socket D Test Point

Introduction, Maintenance, And Troubleshooting of the Primary/Backup Hydraulic System
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multimeter in socket D and grounding the black probe. Set the

MASTER switch to the ON position and test for voltage (Fig. 69).

If voltage is not indicated, repair or replace the cable. Assume

that voltage was indicated, set the MASTER switch to the OFF

position, connect the cable, and continue troubleshooting.

Figure 69.

Stacker Cable Socket D Test Point.

o Disconnect the cable connector at the stacker directional control

valve, place the red probe of the multimeter on the directional

control valve cable connector pin A, and the black probe on pin

C. Set the MASTER switch to the ON position, push the UP push

button on the stacker control switch box, and test for voltage.

Set the MASTER switch to the OFF position, place the red probe of

the multimeter on the directional control valve cable connector

pin B and the black probe on pin C, set the MASTER switch to the

ON position, push the DOWN push button on the stacker control

switch box, and test for voltage (Fig. 70). If voltage is not

indicated at both test points, repair or replace the cable.

Assume that voltage was indicated at both test points, set the

MASTER switch to the OFF position, and continue to troubleshoot

the system.

o Using a multimeter, test the directional control valve solenoid

resistance between solenoid pins socket A and C, and B and C

(Fig. 71). Each test must indicate

OD1703

Index