HYDRAULICS SYSTEM TROUBLESHOOTING

MAIN WINCH FAILS TO OPERATE OR FAILS TO DEVELOP FULL POWER - TM-9-2350-292-10_260

TM-9-2350-292-10 Carrier Ammunition Tracked M992A1(NSN 2360-01-362-3021) EIC:AE6 Manual
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TM 9--2350--292--10 0091 00--1 HYDRAULICS SYSTEM TROUBLESHOOTING 0091 00 THIS WORK PACKAGE COVERS: Hoist winch fails to operate or develop full power 0091 00--1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydraulic oil constantly overheats 0091 00--1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Insufficient or no auxiliary oil pressure 0091 00--1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Insufficient main hydraulics system pressure 0091 00--1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Main winch fails to operate or fails to develop full power 0091 00--2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Winch operates on auxiliary hydraulic power, but does not operate on main engine hydraulic power 0091 00--2 . . INITIAL SETUP: Personnel Required Three References WP 0045 00 WP 0101 00 WP 0036 00 HOIST WINCH FAILS TO OPERATE OR DEVELOP FULL POWER Step 1. Check oil level in hydraulic reservoir. Fill as specified in WP 0101 00. Step 2. Attempt to operate with PTO clutch manually engaged (WP 0045 00). Step 3. If problem still exists, notify unit maintenance (HOIST WINCH FAILS TO OPERATE OR DEVELOP FULL POWER). HYDRAULIC OIL CONSTANTLY OVERHEATS Step 1. Check OIL TEMP GAGE for high temperature indication. If gauge indicates high temperature (above 225°F (107°C)), ensure PTO CLUTCH switch is ON. Stop any operations using the hydraulics system. Run the engine at 2000 RPM to circulate oil through the hydraulic oil cooler until oil cools and indicator goes off. Step 2. If problem still exists, notify unit maintenance (HYDRAULIC OIL CONSTANTLY OVERHEATS). INSUFFICIENT OR NO AUXILIARY OIL PRESSURE Step 1. Check and ensure system selector lever is in auxiliary position. Place system selector lever in auxiliary position. Step 2. Check oil level in hydraulic reservoir (WP 0101 00). Fill as specified in WP 0101 00. Step 3. If problem still exists, notify unit maintenance (INSUFFICIENT OR NO AUXILIARY OIL PRESSURE). INSUFFICIENT MAIN HYDRAULICS SYSTEM PRESSURE Step 1. Remove subfloor plates above hydraulic lines and components (WP 0036 00). Step 2. Inspect lines and components for leaks. Step 3. Tighten fittings and connections. Step 4. Attempt to operate with PTO clutch manually engaged (WP 0045 00). Step 5. If problem still exists, notify unit maintenance (INSUFFICIENT MAIN HYDRAULICS SYSTEM PRESSURE).

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