ORGANIZATIONAL TROUBLESHOOTING - continued

TM 9-2320-269-20-1

ORGANIZATIONAL TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

HYDRAULIC SYSTEM - CONTINUED

DERRICK WILL NOT LOWER - CONTINUED

Step 2. Test elevation cylinder (1) holding valve - Continued

c. If derrick (2) moves, unscrew adjusting screw (3) the same number of times turned in,

and tighten jamnut (4) using 9/16-inch box-end wrench and 3/16-inch socket key.

Step 3. Inspect hydraulic system, and adjust holding valve.

a. Do steps 2 thru 8 of DERRICK WILL NOT RAISE (page 2-136).

b. If derrick still will not lower, notify Direct Support Maintenance.

OUTRIGGERS OPERATE IMPROPERLY - JERKY, WILL NOT HOLD, OR NOT AT ALL

Step 1. Inspect outriggers (5) for damage and loose parts.

a. If outriggers (5) are broken, cracked, or loose, tighten or replace as needed (page 2-

1003).

b. Lubricate outriggers (5) (LO 9-2320-269-12).

A228646

2-140

Index