M11 Series - Service Manual - 006-020 Fuel Inlet Restriction

Remove the fuel supply hose to the gear pump and install the manometer, Part No. ST-1111-3. Use the appropriate hose adapter for the specific engine as described in the Service Tools list.

NOTE: If the gear pump inlet fitting has a Compuchek® fitting, the manometer can be installed there.

SMALL | MEDIUM | LARGE

Hold the manometer at the same level as the gear pump connection.		SMALL \| MEDIUM \| LARGE

Operate the engine at rated speed and

no load.

Observe the reading on the manometer.

Fuel Inlet Restriction CELECT™ and CELECT™ Plus
	mm-hg		in-hg
Clean Filter		152	MAX	6
Dirty Fiter		254	MAX	10

Fuel Inlet Restriction — STC
	mm-hg		in-hg
Clean Filter		102	MAX	4
Dirty Fiter		204	MAX	8

Correct the restriction or replace the fuel filter.

NOTE: The cooling plate on CELECT™ and CELECT™ Plus engines has about 25.4 mm Hg [1 in Hg] restriction.

SMALL | MEDIUM | LARGE

Cooling Plate Inspection

NOTE: This action applies to CELECT™ and CELECT™ Plus engines only.

Inspect the cooling plate for restriction, porosity, and leakage. To inspect for porosity and leakage, visually examine the cooling plate for fuel leaks. If any leaks are found replace the cooling plate. Refer to Procedure

006-006.

SMALL | MEDIUM | LARGE

NOTE: This action applies to CELECT™ and CELECT™ Plus engines only.

Install the mercury manometer, Part No. ST-1111-3, line to a tee fitting. Connect one on and off valve at either side of the tee. Attach the hose and appropriate fittings.

SMALL | MEDIUM | LARGE

NOTE: This action applies to CELECT™ and CELECT™ Plus engines only.

Remove the fuel line from the rear of the cooling plate (fuel in). Install one side of the manometer hose into the fuel line. Connect the line to the cooling plate. Connect the other side of the manometer hose into the line from the front of the cooling plate (fuel out). Make sure both valves are closed.