Replacing the Fuel Filter
Canister
R e place the filter canister after ev er y 400 hours
of operation.
1. Clean the area where the filter canister mounts
( Figure 55 ).
2. R emo v e the filter canister and clean the
mounting surface ( Figure 55 ).
3. Lubricate the g ask et on the new filter canister
with clean oil.
4. Install the filter canister b y hand until the
g ask et contacts the mounting surface , then
rotate it an additional 1/2 tur n ( Figure 55 ).
Replacing the Fuel Prelter
R e place the fuel prefilter after ev er y 400 operating
hours or yearly , whic hev er occurs first.
1. R emo v e the screw securing the prefilter to the
frame rail.
2. Clamp both fuel lines that connect to the fuel
prefilter so that the fuel cannot drain when y ou
remo v e the lines .
3. Loosen the hose clamps at both ends of
the prefilter and pull the fuel lines off of it
( Figure 56 ).
Figure 56
1. Fuel prelter 2. Hose clamps
4. Slide the hose clamps onto ends of the fuel
lines .
5. Push the fuel lines onto the new prefilter and
secure them with the hose clamps ( Figure 56 ).
Important: Ensur e that the ar r o w on
the side of the pr efilter points to w ard the
injection pump .
Bleeding Air from the Fuel
Injectors
Note: T his procedure should be used only if the
fuel system has been purg ed of air through nor mal
priming procedures and the engine will not star t;
refer to Bleeding the Fuel System in Operation ,
pag e 26 .
1. Loosen the pipe connection to the No . 1
nozzle and holder assembly ( Figure 57 ).
Figure 57
1. Fuel injector nozzle and holder assemblies
2. Mo v e the throttle to the F ast position.
3. T ur n the k ey in the k ey switc h to the Star t
position and w atc h the fuel flo w around the
connector . W hen y ou obser v e a solid flo w of
fuel, tur n the k ey to the Off position.
4. Tighten the pipe connector securely .
5. R e peat ste ps 1 through 4 on the remaining
nozzles .
Electrical System
Maintenance
Important: Bef or e w elding on the machine,
disconnect both ca bles fr om the batter y , both
wir e har ness plugs fr om the electr onic contr ol
unit, and the ter minal connector fr om the
alter nator to pr ev ent dama ge to the electrical
system.
47
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