PRONAR ZEFIR 85, Servicing Instruction

Page: 42 / 88

PRONAR
E. WORKING WITH THE TRACTOR
PRONAR
32
REAR THREE-POINT HANG-UP SYSTEM
STRUCTURE
1
4
3
2
2
3
Tractors ZEFIR are equipped with three-point hang-up
system for tools, which connection dimensions correspond
with 2 categories of hanging-up according to the ISO-730
standard. Three-point hang-up system enables coupling
hang-up and half-hang-up tools with the tractor, their
operation and controlling their operation by means of
hydraulic system.
Lower links are lifted up and let down by means of
hangers 3 , connected with arms of lifting appliance. Hangers
are easily adjustable and enable proper positioning tools with
relation to the tractor.
Upper link 4 is attached to the bracket on the middle
cover of the rear axle. The rear part of the upper link must be
attached to the upper draw bolt of the tool that is to be hang-
up. Upper link is also adjustable, which faciliates positioning
the tool.
Fig. E-9
Three-point hang-up system – structure.
1 – lower ball links, 2 – low links limiters; 3 – hangers; 4 –
upper link;
ACCOUPLING MACHINES (TOOLS)
Machines (tools) are being hung-up (accoupled) with the tractor in three points: two joints of lower links 1
and in upper link, through upper link 4 .
Before accoupling the equipment one must adjust hangers 3 and make sure whether telescopic limiters
2 are mounted and properly adjusted. Dismantle the hook-type coupling or upper transport coupling, if need
be..
Before setting about accoupling machines or devices, one must pull the parking
brake.
Accoupling
Most of tools can be accoupled to the tractor in the following way:
1. Position the tractor, so that coupling joint of lower links be levelled and positioned in the axis of coupling
pins of the tool.
2. Attach the tool to lower links.
4. Having the parking brake pulled and actuated, adjust the upper link so that the bracket pin of the tool
could pass through the bracket and upper link.
5. Connect the external hydraulic piping, if necessary.
6. After having the tool accuopled and before setting about working, check whether the accoupled tool does
not run against any part of the tractor.
ATTENTION:
When accoupling hung-up or half-hung-up tools with three-point hang-up system or
with transport coupling of hook-type coupling, make sure that there is enough clear
width between the tool and the tractor (cab, back window, tyres) at any tool position.
If need be, adjust telescopic limiters.
In order to detach the machine (tool) from three-point hang-up system, one must:
1. lower the tool, making sure that it will no fall down after having it detached from the tractor;
2. detach the upper link of three-point hang-up system
3. detach lower links of three-point hang-up system
4. lower the lower links completely and drive the tractor forward.