Strainer and Gasket Kit
WARNING: Hydraulic oil is extremely hot
after use. Allow oil to cool before
servicing.
1. Remove cap (40).
2. Remove six screws (60).
3. Remove filler neck (50).
4. Remove strainer and gasket (70).
5. Install new strainer and gasket (70) and align
the six screw holes of the components.
6. Install filler neck (50) and align screw holes.
7. Attach filler neck (50) and strainer and gasket
kit (70) with the six screws (60).
8. Check hydraulic oil level and add oil if required.
9. Install cap (40).
REPLACING EXHAUST SYSTEM
For replacement of the muffler, refer to IPL
Figure 33.
WARNING: Allow engine to cool down before
performing any service.
1. Support muffler (150) then loosen clamp (160)
attaching muffler to engine assembly (170).
2. Remove muffler (150) from grader.
3. Install new muffler by reversing procedure.
REPLACING RADIATOR ASSEMBLY
For replacement of the radiator, refer to IPL
Figure 33.
WARNING: Allow engine to cool down before
performing any service.
NOTE: Remove hood and grill to access
radiator.
1. Drain radiator coolant into a container large
enough the hold all radiator coolant.
2. Disconnect the transmission fluid lines and plug
lines. Allow transmission fluid in radiator to
drain into a container.
3. Disconnect the hydraulic fluid lines and plug
lines. Allow hydraulic fluid in radiator to drain
into a container.
4. Support radiator during removal process.
5. Remove nuts (70), lockwashers (80), and
screws (60) attaching radiator-mounting pad
(50) to radiator support plate (90).
6. Lift radiator (10) off of mounting surface.
7. Remove screw (20), nut (30), and lockwasher
(40) attaching radiator-mounting pad (50) to
radiator.
NOTE: Check radiator mounting pads (50) for wear
or damage and replace if necessary.
8. Install a new radiator by reversing procedure.
9. Check for proper centering of the fan in the
shroud. Fan should be 2/3 in shroud for proper
air flow.
10. After reconnecting hoses, add coolant,
hydraulic fluid and transmission fluid as
needed. Add coolant to overflow tank if
necessary.
REPLACING VALVE BANK
Refer to IPL Figure 24 to replace a valve in the
valve group.
WARNING: When replacing any hydraulic com-
ponents, remove pressure from the
hydraulic system by lowering all
items, discharge any accumulator,
block any load whose movement
could generate pressure, and turn-
ing off the engine to prevent pump
operation. Remove keys from the
ignition to prevent unexpected
starting of the machine.
1. Lower all hydraulically operated components
then turn engine off to stop hydraulic pumps.
NOTE: Place a container under hydraulic
hoses to catch any hydraulic fluid
when disconnecting hoses.
2. Disconnect all hydraulic hoses from the valves.
3. Remove valve assembly and place on a clean
table for service.
4. Disconnect the ball stud heim joint (150 or 170),
as applicable, from the valve mount shaft (190).
5. Remove two nuts (100) and slide capscrew (90)
out far enough to clear the valve that is to be
replaced.
6. Slide the defective valve out of the valve
assembly.
Section 4
MAINTENANCE
4-23
785 Motor Grader
Courtesy of Machine.Market
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