TM 9-2510-247-13&P
UNIT TROUBLESHOOTING - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
HYDRAULIC SYSTEM
1. HYDRAULIC FUNCTIONS SLOW OR INOPERATIVE
Step 1.
Is there minimum12VDC on batteries?
If no, go to step 2.
If yes, go to step 3.
Step 2.
Is NATO slave cable connected?
If no, install NATO cable in receptacle on prime mover and receptacle on 12/24
volt junction box.
If yes, go to step 3.
Step 3.
Is pressure gauge reading 300-800 psi when performing MAST RETRACT and
If no, adjust flow control valves (WP 0003).
If yes, go to step 4.
Step 4.
Is the temperature below 0F (-18C)?
If no, purge hydraulic oil (WP 0056 00-5) and fill with new hydraulic fluid.
If yes, purge hydraulic oil (WP 0056 00-5) and fill with 5606 Arctic oil (WP 0056 00-5).
2. BOOM HYDRAULIC CYLINDER LEAKS
Step 1.
Is pressure gauge reading 300-800psi when performing MAST RETRACT and
If no, adjust flow control valves (WP 0003).
If yes, go to step 2.
Step 2.
Did adjusting the flow valves stop leak?
If no, replace hydraulic cylinder (WP 0064).
If yes, discontinue with troubleshooting.
0028 00-1
