Great Plains Simba Flatliner 500 FW Operator Manual - Manual (Page 26)

26 Simba Flatliner 500 FW
270-600M-ENG
2013-02-06
5. Servicing and Maintenance
5 . 5 . 1 Va l v e S e t t i n g
Sequence - Factory Setting
1. Raise machine, to ensure tines are fully
clear of the ground at depth.
2. Adjust reliefs (marked RDBA LBN
and RDBA LAN) and precharge valve
( CCCA LIN) all clockwise fully.
3. Adjust flow control ( NCBB LCN) fully
clockwise, then anti-clockwise 2 turns.
4. Raise tines, then pressure fully down.
Set failsafe ( RDBA LAN) to between
190-220 bar. If available pressure is
insufficient to achieve this, set to ½
turn clockwise above that where valve
relieves at tractor maximum pressure.
If tines do not relieve under severe
overload, this valve should be
reduced (anti-clockwise) until this
occurs in work, otherwise damage
may occur.
5. Pressure tines down, and set
accumulator relief ( RDBA LBN) to 90
bar as tines are lowered.
6. Pressure tines down and check
cylinder pressure reads 90 bar and
the corresponding rod pressure reads
between 10-20 bar (achieved by
adjusting precharge valve ( CCCA
LIN)).
7. Put main circuit in float, check above
pressures are maintained at least at
the lower values indicated.
5.5.2 Valve Adjustment - To
Suit Field Conditions
(a) Normal / Stony conditions
To avoid damage to tines and chassis in
severe stone conditions reduce accumulator
relief ( RDBA LBN) 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 ( RDBA LBN) as tines
are held in ‘lower’ to read up to 120 bar.