Hydraulic Control Of Supporting Hooks; Agregation With The Semi-Trailer And Trailer - Zetor 86 41 forterra turbo Operator's Manual

HYDRAULIC CONTROL OF SUP-
PORTING HOOKS
In the tractors fitted with ∗ the hydraulic
control of the hitch for the single-axle
trailers, the tilting-off of the supporting
arms is controlled with the lever of the ad-
ditional distributor (usually the R.H, lever
of the distributor or as the operator
wishes).
1. Lift the hydraulic system arms to the top
with the position regulation set up (the
swing compensator must be swith
OFF).
2. At the engine idle run, supply the pres-
sure oil to the quick coupler where a
hydraulic cylinder is attached. It will un-
lock the supporting hooks (tilting off of
the supporting hooks) and then return
the lever to the neutral position.
TRANSPORT APPLICATION
F_02_143a
3. Lower the hydraulic system arms to the
bottom position.
4. In the course of lowering, shift the hy-
draulic cylinder control lever to the
"floating" (arrested) – front limit position.
Thanks to that the supporting hooks
return – by the spring pull – to the oper-
ating position.
5. Couple or uncouple the trailer.
6. Raise the hydraulic system arms to the
top position.The supporting hooks will
snap under the pins.
7. Moderately lower the hydraulic system
arms. The hitch tie rod may not be ten-
sioned! Keep the minimum clearance
(x) – see Fig. F142!
8. Return the hydraulic cylinder control
lever to the neutral position.
9. Shift the lifting lever to the STOP posi-
tion.
F144
AGREGATION WITH THE SEMI-
TRAILER AND TRAILER
The tractor aggregates with the tractor
trailer after synchronizing the tractor and
the pneumatic brakes of the trailer only.
If aggregated with the semi-trailer, the
static load on the tractor rear axle may
not exceed the value of the maximum
admissible load.
96
F_02_39