Great Plains Simba SL700 Operator Manual - Manual (Page 26)

26 Simba SL700
603-216M-ENG
2013-01-25
4.9 Depth Control
Working depth can be set by rear roll and
front depth wheels. Under normal conditions
the weight of the machine will be carried on
the roll and the front depth wheels, with the
main lift wheels either fully up or floating.
If the wheels are powered up, then placed
in float the axle will hold up until powered
down. Depth is set using the depth control
cylinders situated on the roll unit with shims
added and removed as appropriate, and with
the adjusters on the front wheels, which are
adjusted using the square spanner provided.
The front to rear pitch of the machine should
be adjusted as appropriate to compensate
for changes in working depth by adjusting
the height of the depth wheels.
Using the Rear Roll
Use roll depth adjuster/hydraulic cylinder to
set machine working depth. The front depth
wheels should be adjusted to suit the depth
of the rear roll ensuring that the chassis runs
level front to rear.
4. Adjustment / Operation
4.10 Using Shims
Before using shims to alter machine settings
ensure the machine is stationary and the
tractor is turned off with the keys out. Ensure
that all operators are clear of the machine
and that no load is being held on any existing
shims in the cylinder / depth control rod.
To fit the shims hold them by the handle and,
using a firm action, clip them onto the rod
as shown in Fig. 4.08. They are removed by
using a finger to pull firmly on the handle.
Check the cylinder / depth control
rod for damage and debris before
fitting shims.
Only attempt to add or remove
shims using the handle. Trying to
manipulate shims using the jaws
could result in injury.
When changing machine settings
ensure both sides of the machine
mirror each other. The left hand
cylinder should contain the same
amount of shims as the right, for
example. Failure to do this could
result in damage to the machine.
Fig. 4.08: Shims