ORGANIZATIONAL TROUBLESHOOTING - continued

TM 9-2320-269-20-1

ORGANIZATIONAL TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

HYDRAULIC SYSTEM - CONTINUED

DERRICK WILL NOT RAISE OR HOLD LOAD - CONTINUED

Step 5. Inspect hydraulic system for leaks.

Do steps for loss of fluid (page 2-135).

Step 6. Inspect derrick (1) for damage and loose parts.

a. If derrick (1) or parts are broken or loose, notify Direct Support Maintenance.

b. If elevation cylinder (2) is cracked or broken, replace (page 2-1086).

If elevation cylinder lines (3) are loose or broken, tighten using 7/8-inch wrench, and

repair or replace (page 2-1086) as needed.

Step 7. Test elevation cylinder (2) and lines (3) for leaks.

a. Have assistant engage power takeoff, start engine, and operate derrick controls (TM

9-2320-269-10).

b. If elevation cylinder (2) leaks, shut off engine, disengage power takeoff, remove gage,

and replace cylinder (2) (page 2-1086).

If lines (3) leak, shut off engine, disengage power takeoff, remove gage, and repair or

replace as needed (page 2-975).

d. Shut off engine (TM 9-2320-269-10).

Step 8. Adjust elevation cylinder (2) holding valve pressure.

a. Install gage, and check pressure (page 2-1086).

b. If pressure is within proper range, remove gage and notify Direct Support

Maintenance.

Adjust pressure.

d. If derrick (1) still does not raise or hold load, remove gage and notify Direct Support

Maintenance.

2-138

Index