2. Support lift cylinder during removal process.
NOTE: Place a container under hydraulic
hoses to catch any hydraulic fluid
when disconnecting hoses.
3. Disconnect hydraulic hoses from the lift cylinder
(250).
4. Remove one roll pin (260) and upper scarifer
pin (270).
5. Remove one roll pin (230) and lower scarifer
pin (240).
6. Lift cylinder out of assembly.
7. Reverse procedure to install a new cylinder.
REPLACING SCARIFIER LIFT CYLINDER, REAR
SCARIFIER ASSEMBLY
For replacement of the scarifier lift cylinder, refer to
IPL Figure 41 for the rear scarifier assembly.
1. Lower all hydraulically operated components
then turn engine off to stop hydraulic pumps.
2. Support lift cylinder during removal process.
NOTE: Place a container under hydraulic
hoses to catch any hydraulic fluid
when disconnecting hoses.
3. Disconnect hydraulic hoses from the lift cylinder
(130).
4. Remove two roll pins (110) and rear scarifer pin
(120).
5. Remove four screws (140), lockwashers (150)
and two cylinder mounting collars (160)
attached to cylinder mounting plate (170).
6. Lift cylinder out.
7. Reverse procedure to install a new cylinder.
REPLACING MOLDBOARD SLIDE HYDRAULIC
CYLINDER
For replacement of the moldboard slide hydraulic
cylinder, refer to IPL Figure 10 for the moldboard
assembly.
1. Lower all hydraulically operated components
then turn engine off to stop hydraulic pumps.
2. Support slide cylinder (130) during removal
process.
NOTE: Place a container under hydraulic
hoses to catch any hydraulic fluid
when disconnecting hoses.
3. Disconnect hydraulic hoses from the slide
cylinder (130).
4. Remove two roll pins (20) and slide cylinder
mounting pin (30).
5. Remove capscrews (140) and lockwashers
(150).
6. Lift out slide cylinder (130).
7. Reverse procedure to install slide cylinder.
REPLACING MOLDBOARD TILT HYDRAULIC
CYLINDERS
For replacement of the moldboard tilt hydraulic
cylinders, refer to IPL Figure 10 for the moldboard
assembly.
1. Lower all hydraulically operated components
then turn engine off to stop hydraulic pumps.
2. Support tilt cylinder (40) during removal
process.
NOTE: Place a container under hydraulic
hoses to catch any hydraulic fluid
when disconnecting hoses.
3. Disconnect hydraulic hoses from the tilt cylinder
(40).
4. Remove hex capscrew (50), lockwasher (70)
and cylinder end cap plate (60) from both ends
of the cylinder to be replaced.
5. Slide cylinder ends off the slide assembly (160)
and turntable assembly (200) and lift out tilt
cylinder (40).
6. Reverse procedure to install tilt cylinders.
REPLACING CIRCLE SHIFT HYDRAULIC
CYLINDERS
For replacement of the moldboard angle hydraulic
cylinder, refer to IPL Figure 9, Yoke Assembly.
1. Lower all hydraulically operated components
then turn engine off to stop hydraulic pumps.
2. Support shift cylinder (40) during removal
process.
NOTE: Place a container under hydraulic
hoses to catch any hydraulic fluid
when disconnecting hoses.
3. Disconnect hydraulic hoses from the shift
cylinder (40).
4. Remove four hex head screws (50),
lockwashers (60), and two bearing caps (40),
Section 4
MAINTENANCE
4-21
785 Motor Grader
Courtesy of Machine.Market
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