NC SW6 Maintenance Instructions Manual page 51

CHART A1—Dumper will not start or difficult to start (no exhaust
Cause
Electrical isolator not turned on.
Not in Neutral.
No fuel in tank.
Display gauge not powering up.
Display powering up but not starting engine. Check the start inhibit relay behind the steering column plate.
Electrical fuel shut-off solenoid (ESOS)
valve not functioning properly.
Fuel filter blocked with water or other
contamination.
Fuel lift pump not operating correctly (fuel
supply inadequate).
Fuel is aerated.
Check the fuel inlet restriction.
Air intake or exhaust system is blocked.
Fuel drain return line blocked or not
connected properly.
Fuel filter(s) blocked, fuel supply restricted.
Worn or malfunction fuel injection pump
(FIP). Injection pump not delivering fuel.
Injection pump timing incorrect.
One or more injector worn or
malfunctioning.
Fault Finding
smoke)
Turn isolator on.
Check the FNR lever is in the NEUTRAL position.
Check the level in the fuel tank and replenish as required.
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Check for correct operation of the ESOS.
Drain fuel/water separator or replace fuel filter.
Check that the lift pump is operating and delivering fuel to the
injection pump.
Check the fuel system for loose connections and possible air
ingress points. Rectify and bleed the fuel system.
Maximum inlet restriction to the fuel transfer pump must not
exceed 100mm Hg (4" Hg).
Visually check the air intake and exhaust intake for blockage or
obstruction, remove as required. Check the air filter elements for
signs of blocking, replace as required.
Verify that the fuel return line is not obstructed and connected to
the top of the fuel tank.
Check/replace the fuel filter(s). Check fuel lines for restriction
Check for operation of the FIP.
The FIP must be taken to a local FIE specialist to have the fuel
delivery timing checked. Ensure that all obvious causes have been
eliminated before removing the FIP. (Needs to be, Delphi DP210
capable agent for mechanical engines and for common rail
electronic engines see Delphi agent or JCB dealer
(www.delphi.com or www.jcb.com)
If the pump has recently been removed and replaced the timing
could be incorrect if the correct removal procedures were not
followed.
The timing can only be checked by a FIE specialist using the
correct equipment.
Check and externally clean the injector. If the problem still
persists, the injector must be checked by a FIE specialist or replace
with new.
Remedy
Check battery.
Check main line fuses 30A & 100A.
Check fuses in fuse box behind the steering column plate.
51