Hydrostatic Locked Engine

HYDROSTATIC LOCK

WARNING: On vehicles equipped with the high voltage system, you must thoroughly read and follow all High Voltage Safety procedures. In addition, before performing any diagnostic or service procedure near a high voltage component, you must perform the High Voltage Power Down. Failure to follow these instructions may result in possible serious or fatal injury Service Precautions

CAUTION: Do not attempt to run engine. Severe damage could occur.

NOTE: When an engine is suspected of hydrostatic lock, regardless of what caused the problem, follow the steps below.





1. Perform the fuel system pressure release procedure Service and Repair
2. Perform the HEV high voltage power down procedure . Battery System - High Voltage Power Down
3. Disconnect the 12 volt battery system ground isolation connector (1) located next to the electric vacuum pump (2).
4. Inspect the air cleaner, induction system, and intake manifold to make sure the system is dry and clear of foreign material.
5. Remove the Traction Power Inverter Module (TPIM) Traction Power Inverter Module - Removal
6. Place a shop towel around the spark plugs to catch any fluid that may possibly be under pressure in the cylinder head and remove the spark plugs Spark Plug - Removal
7. With all the spark plugs removed, rotate the crankshaft using a breaker bar and socket.
8. Identify the fluid in the cylinders (coolant, fuel or oil).
9. Make sure all the fluid has been removed from the cylinders.
10. Repair engine or components as necessary to prevent this problem from occurring again.
11. Squirt a small amount of engine oil into the cylinders to lubricate the walls. This prevents damage on restart.
12. Install new spark plugs Spark Plug - Installation
13. Change the oil and filter Service and Repair and Perform the HEV high voltage power up procedure Battery System - High Voltage Power Up
14. Connect the 12 volt battery system ground isolation connector.
15. Start the engine and check for any leaks.