ID Tags

ID Tag for Engine, drive and TSK

ID Tag for Engine

All engines have two engine ID tags, one is a sticker located somewhere near the front and top of the engine. In current production engines, the tag is located on the “rain hat”or plastic engine cover. The other tag is riveted to the engine block, leftbank just forward of the flywheel housing. These tags contain the model number for the engine, the serial number of the engine and the specification number for the engine.

The tag on the rain hat should also have the stickers for the transom shield and the drive (if applicable) attached to it.

Volvo Penta of the Americas

1300 Volvo Penta Drive

Chesapeake, Virginia 23320-9810

USA

Component Engine Models

Distribution:MDate:07

During our routine auditing process of production, we have found certain inconsistencies within the thermostat housing of the 8.1 engines (P/N 3860872). Casting imperfections might be present that would prevent correct water flow through this housing. Certain intake water temperatures and ambient air temperatures could produce water temperatures within the engine that could activate the alarm, thus causing the engine to enter “Power Reduction Mode”.

Casting

Imperfection 22336

If you are investigating a high speed overheat condition, you should check this housing for anything (debris, casting slag) that can restrict the water flow to the exhaust manifolds. Inspect all hoses for kinked or collapsed hoses. The engine cooler is the first place the water is routed after the seawater pump, this tube type cooler should be checked for blockage.

If all the above items have been checked and eliminated, the passage for incoming water through the hosing may be improperly sized. The following procedure explains how to be sure this possibility is eliminated.

NOTE ! To ensure the best accuracy while drilling and tapping, this procedure should be done with the housing removed from the engine.

NOTE ! Drain and remove all hoses from the thermostat housing.

1. Remove the 90° pipe to hose fitting for the cooling hose to the fuel cell.

3. Using a 9/16” drill bit, apply tape 2 1/8” from the bottom of the bit.

4. Drill straight down through the passage 2 1/8” from the top of the housing.

5. Using a die grinder or similar, remove any remaining raised portions or castings.

6. Tap the hole with a 3/8” NPT tap.

7. Clean any excess shavings and

8. Apply Volvo Penta sealing compound P/N 1141571 to a 3/8” to 1/4” NPT reducing bushing and install.

9. Install the pipe to hose fitting for the fuel cell cooling hose.

10. Apply red spray paint (P/N 3810286) to the housing if necessary before reinstalling the housing.

11. Reinstall the housing using a new gasket.

12. Test run the engine and check for leaks.