TM 5-3805-290-23-1
TROUBLESHOOTING INTRODUCTION - CONTINUED
0004 00
EXPLANATION OF TROUBLESHOOTING TABLE COLUMNS
0004 00
The columns in troubleshooting Tables 1 thru 8 in WP 0008 00 and Tables 1 thru 6 in WP 0009 00 are defined as fol-
lows:
1.
MALFUNCTION. Indicates fault that has occurred in system/equipment.
INSPECTION OR TEST. Indicates inspection or test to be performed to isolate probable cause for fault symptom.
2.
CORRECTIVE ACTION. Indicates procedure to correct the problem.
3.
0004 00
OPERATIONAL CHECKS (BRAKING AND HYDRAULIC FAN SYSTEM)
WARN I N G
When servicing this machine, performing maintenance, or disposing of materials such as engine cool-
ant, hydraulic fluid, lubricants, battery acids or batteries, and CARC paint, consult your unit/local
hazardous waste disposal center or safety office for local regulatory guidance. If further information is
needed, please contact The Army Environmental Hotline at 1-800-872-3845.
DO NOT disconnect or remove any hydraulic system line or fitting unless engine is shut down and
hydraulic system pressure has been relieved. Tighten all connections before applying pressure. Escap-
ing hydraulic fluid under pressure can penetrate the skin, causing injury to personnel.
At operating temperature, hydraulic oil is hot. Allow hydraulic oil to cool before disconnecting any
hydraulic lines. Failure to follow this warning may result in injury to personnel.
Lubricating/hydraulic oils used in the performance of maintenance can be very slippery. Immediately
wipe up any spills. Failure to follow this warning may result in injury to personnel.
To prevent injury to personnel, wear protective eye covering and gloves.
C AU T I O N
Wipe area clean around all connections to be opened during removal. Cap lines and hoses and plug open-
ings after removing lines. Contamination of system could result in premature failure.
N OT E
Tag hoses prior to removal to ensure correct installation.
Use a container to catch any fluid that may drain from hoses or system. Dispose of fluid IAW local pol-
icy and ordinances. Ensure all spills are cleaned up.
Many of these problems can create diagnostic or event codes in ET. These codes can help find root
cause of problem. ET should be used to retrieve logged and active codes.
When you diagnose a problem in braking and hydraulic fan system, a visual inspection of system is
first step. Before any tests are performed, visually inspect entire braking and hydraulic fan system for
oil leaks and damaged parts.
1.
Shut down engine (TM 5-3805-290-10).
2.
Lower implement to ground (TM 5-3805-290-10).
3.
Engage parking brake (TM 5-3805-290-10).
4.
Check oil level in sight gage (TM 5-3805-290-10).
5.
Look for air in oil in hydraulic tank immediately after engine is stopped. Use a clear container to obtain a sample of oil
if necessary. Look for air bubbles in oil in container.
6.
Check all oil lines and all connections for damage and for leaks.
