CRANE DOES NOT SWING COUNTER CLOCKWISE (CCW).

TM 9-2320-364-34-1

2-15. MATERIAL HANDLING CRANE TROUBLESHOOTING (CONT).

10. CRANE DOES NOT SWING COUNTER CLOCKWISE (CCW).

INITIAL SETUP

References

Tools and Special Tools

TM 9-2320-364-10

Tool Kit, General Mechanic's

TM 9-2320-364-20

(Item 240, Appendix F)

Cap and Plug Set (Item 26, Appendix F)

Equipment Condition

Pan, Drain 4 gal (Item 144, Appendix F)

Engine OFF, (TM 9-2320-364-10)

Pressure Test Kit (Item 165, Appendix F)

Parking brake applied, (TM 9-2320-364-10)

Wheels chocked, (TM 9-2320-364-10)

Materials/Parts

Outriggers down with weight off

Oil, Hydraulic (Item 34, Appendix B)

vehicle suspension, (TM 9-2320-364-10)

Tags, Identification (Item 72, Appendix B)

Lockwasher (4) (Item 282, Appendix E)

Packings, Preformed (11) (Item 347, Appendix E)

Packings, Preformed (3) (Item 389, Appendix E)

START

KNOWN INFO

TEST OPTIONS

WARNING

Read WARNING

Unit Troubleshooting

Operation test.

on Page 2-541

tasks completed.

Crane swings CW.

REASON FOR QUESTION

Does crane swing CCW with

If SWING valve on four valve

POSSIBLE PROBLEMS

hoses to swing motor

bank is faulty, fluid going to

crossed and SWING control

Four valve bank faulty.

swing motor valve will be

Swing motor valve.

restricted.

lever in CW position?

Go to Step 2 of this

Fault.

YES

Repair four valve

bank (Para 16-26).

Verify repair, go to

Step 4 of this Fault.

2-540