Great Plains Simba DTX AR Operator Manual - Manual (Page 28)

28 Simba DTX AR
604-108M-ENG
2013-02-08
5. Servicing and Maintenance
5.7.1 Valve Setting
Sequence - Factory
Setting
1. Raise machine, to ensure tines are fully
clear of the ground at depth.
2. Adjust relief valve ( marked 1 /
coloured green) clockwise fully. Turn
anticlockwise one full turn.
3. Adjust flow control ( marked 5 /
coloured blue) fully clockwise, then
anti-clockwise 4 turns.
4. Adjust accumulator relief valve
( m a r k e d 2 / c o l o u r e d r e d )
anticlockwise fully. Turning clockwise
now will increase the pressure on the
gauge.
5. Pressure tines fully down and set
accumulator relief ( 2) to between 90
and 150 bar (see section 5.7.2) as
tines are lowered.
If tines do not relieve under severe
overload, this valve should be
reduced (anti-clockwise) until this
occurs in work, otherwise damage
may occur.
6. Remove cap from sequence valve
( marked 3 / coloured yellow) and
remove the anti-tamper pin. Loosen
anticlockwise fully and then tighten
clockwise for a half turn. This will set
the rod side pressure for the circuit.
6. Pressure tines down and check
cylinder pressure reads 90 - 150 bar
(see section 5.7.2).
7. Put main circuit in float, check that
pressure is maintained.
5.7.2 Valve Adjustment -
To Suit Field Conditions
(a) Normal / Stony conditions
To avoid damage to tines and chassis in
severe stone conditions reduce accumulator
relief ( 2 / red) as tines are held in ‘lower’ to
read 90 bar.
(b) Hard, stone free conditions
It is permissible to increase gauge pressure
for accumulator relief ( 2 / red) as tines are
held in ‘lower’ to read up to 150 bar.
5.8 Tines
When performing maintenance
work on tines extreme care
should be taken. Wear goggles
and gloves at at all times when
maintaining tines.
Safely support machine in raised
position using taps and stands
before attempting maintenance
work on tines.
Do not attempt to assist fitting
tine points with a steel headed
hammer, this can lead to
splintering of the metal due to its
hardness, which can cause injury.
If tine fitting requires assistance,
a copper/hide or plastic mallet
should be used.