Manitowoc MLC300 Service And Maintenance Manual

Reference Only
Manitowoc Published 11-22-17, Control # 257-02 7-13
MLC300 SERVICE/MAINTENANCE MANUAL POWER TRAIN
7
REPLACING THE FUEL FILTER—CUMMINS
QSG12 ENGINE
See Figure 7-11 for the following procedure.
Overview
The fuel filter for the Cummins QSG12 engine is a
combination fuel filter and water separator. To ensure a
clean fuel system and proper engine operation, the fuel filter
element must be replaced at the interval specified in the
engine manufacturer’s operation and maintenance manual.
Replacing the Fuel Filter
1. Stop the engine and leave the ignition switch in the OFF
position so the electric fuel primer pump cannot run.
2. Close the outlet shut-off valve (1) and the inlet shut-off
valve (2). When shut off, the handles are perpendicular
to the fuel lines.
3. Make sure the drain valve (3) is closed. When closed,
the handle is perpendicular to the drain valve.
4. Remove the drain plug (4). A small amount of fuel will
drain. Catch the fuel with a rag.
5. Connect a 19 mm (3/4 in) I.D. hose to the drain valve to
direct the fuel to an approved container with a minimum
capacity of 3,8 L (1 gal). Use a hose clamp if needed.
6. Open the drain valve (3) to drain the fuel filter housing.
7. Open the vent (5) on the top of the filter element (6) to
drain the fuel.
8. After the fuel is drained, remove the filter element (6) by
rotating it counterclockwise (viewed from the top of the
filter element).
9. Dispose of the old filter element according to local
environmental regulations.
10. Install and securely tighten the new filter element (6) by
rotating it clockwise.
11. Close the vent (5).
12. Close the drain valve (3).
13. Remove the hose and install the drain plug (4).
14. Open the outlet shut-off valve (1) and the inlet shut-off
valve (2).
15. To prime the fuel system, cycle the ignition switch to ON
a few times without starting the engine. The electric fuel
primer pump runs for 120 seconds with the key on.
Item Description
1 Shut-Off Valve (outlet)
2 Shut-Off Valve (inlet)
3Drain Valve
4Drain Plug
5Vent
6 Filter Element
FIGURE 7-11
View Inside Rotating Bed to
Right Rear of Engine

Manitowoc MLC300 Specifications

General

Brand	Manitowoc
Model	MLC300
Category	Construction Equipment
Language	English