Do not attempt to service an injection pump that is
not operating correctly. See your authorized
injection pump service center.
DRAINING FUEL FILTER SEDIMENT
1. Loosen drain screw on bottom of fuel filter and
drain liquid for several seconds.
2. Tighten drain screw.
3. Bleed fuel system (See Change Fuel Filter in
500 Hour Maintenance section).
REPLACING AIR CLEANER ELEMENTS
1. Remove cap, Figure 11.
2. Remove outer air cleaner element.
3. Remove inner air cleaner element.
4. Clean air cleaner housing.
5. Install new elements.
6. Install cap.
FUSES AND CIRCUIT BREAKERS
The fuse box is on the right-hand console. Both
fuse and circuit breakers are located in the fuse
box.
CAUTION: Install fuses with correct amperage
rating to prevent damage to the
electrical system from overload.
The following list cross-references blade type fuse
color codes to the amperage rating.
Amp rating Color
1 Black
3 Violet
4 Pink
5Tan
7.5 Brown
10 Red
15 Light Blue
20 Yellow
25 Natural (white)
30 Light Green
CHECKING NEUTRAL START SYSTEM
1. Engage parking brake.
2. Move transmission selector lever to 1st gear
forward or reverse.
3. Turn key switch to START position. Starter must
not crank. If starter cranks engine, release key.
Do not operate machine.
4. Repeat test with selector lever in each gear,
both forward and reverse.
NOTE: Do not operate machine if starter
cranks engine with control lever in any
gear except neutral.
Section 4
MAINTENANCE
4-14
785 Motor Grader
Figure 11. Air Cleaner
Courtesy of Machine.Market
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