Front Three Point Hitch; Control Of Front Three Point Hitch; Adjusting The Back Throttle Valve - Zetor 8621 Forterra turbo Operator's Manual

FRONT THREE POINT HITCH

Front three point hitch is intended for
attaching the front carried agricultural
machines and implements of category II
according to ISO standard. It is as-
sembled on tractors with front driving
axle.
Maximal lifting force of front three point
hitch is 12 kN
Within the implement
portation the front three point
hitch must always be locked me-
chanically in lifted position.
Note: This mechanical lock is recom-
mended even in case that no implement
is attached in the three point hitch
HITCHES
F 200
CONTROL OF FRONT THREE POINT
HITCH
Front three point hitch is equipped with
two single-acting cylinders that are cont-
rolled by oil from hydraulic outer circuit
(quick-coupler "1"). Lifting and lowering
is controlled by lever of outer circuit (1)
" lever position "a, b, c".
Do not use the lever position "d"
trans-
when working with front three
point!
Lowering speed of hitch with implement
can be controlled by back throttle valve
(2).
139
F 201
ADJUSTING THE BACK THROTTLE
VALVE
Adjusting the throttle valve is recom-
mended before starting the operation
with attached implement in front three
point hitch that way the time needed for
implement lowering from the upper
position is 1 to 1,5 second. Turning the
valve body into left (in arrow direction)
increases lowering speed.
F 202