Zetor Proxima 80 2012 User Manual

156
MAINTENANCE INSTRUCTIONS
G719
REPLACEMENT OF HYDROSTATIC STEERING HOSES
The hoses shall be replaced after four years from the date of their manufacturing (the
date can be found on their surface) or after 3,500 Mh of the tractor or in case that any
traces of their damage are found (weeping of a hose, local bulging, leakage of work-
ing medium around terminals and from the surface, damaged jacket by rubbing
against metal frame, damaged outer braid of low-pressure hoses).
In case of a failure of the pump or if the engine is in standstill, steering ability
is preserved, however, the steering wheel shall be manipulated with much
higher effort. It is possible to drive with the tractor to the nearest repair shop
at reduced speed.
The steering wheel shall not be hold in any side limit position for a longer pe-
riod (max. 20 sec), otherwise this causes excessive warming of oil in the hy-
drostatic steering circuit.

Zetor Proxima 80 2012 Specifications

General

Cylinders	4
Cooling	Liquid
Displacement	4156 cm³
Transmission	Mechanical
Max. speed	30 km/h
Hydraulic System	Open center
Hydraulic Pump Flow	50 l/min
Hydraulic pump capacity	50 l/min
Hydraulic pressure	180 bar
PTO Speed	540/1000 rpm
Rear PTO	Independent
Turning Radius	4.3 m
Brakes	Wet disc
Front axle	Rigid
Ground Clearance	450 mm
Engine Type	Diesel
Number of external hydraulic circuits	2