Replacing The Hoses Of Hydrostatic Steering; Replacing Coolant; Check And Replacement Of Oil In Gearbox, Axle Drive And Rear Axle Portals - Zetor Proxima GP Series Operator's Manual

Replacing the hoses of hydrostatic steering

Hoses need to be replaced four years from the date of their manufacture (date is given on their surface) or
after working 3,500 hours with tractor, or right after learning the symptoms of their damage (hose, local
swelling, penetration of working medium around endpoints and hose surface, wrapping damage by
mechanical smear to a metallic body, damage to external buckle braid with low-pressure hoses).
If a pump gets damaged or if the engine is at standstill, steerability is observed, but the force
on the steering wheel increases. It is possible to get to the nearest place where repairs can be done
with lowered speed. The steering wheel must not be held in the positions of extreme wheel locks for
longn (maximum time is 20 sec.), otherwise there is excessive oil heating in hydrostatic steering
circuit.

Replacing coolant

Proceed in the following way:
1 - Open the heating valve and release the pressure cap
(C) on equalizing vessel.
2 - Drain the coolant from the radiator. Plug (A) is
accessible after lifting the bonnet.
3 - Drain the coolant from the block of engine. Drain cock
(B) is accessible after the disassembly of right side part.
4 - After draining the coolant close the drain valve and cap
(leave heating cock open).
5 - Fill the cooling system with a coolant to the neck in
equalizing vessel and close by pressure cap.
6 - Start the engine and allow it to run for approximately
1 min.
7 - Fill the level of coolant in equalizing vessel to MAX.
gauge.
8 - Close the vessel with a pressure cap (C).
Always use the prescribed coolant to fill the
cooling system of the engine. Never fill the cooling
system with water. Using other than the prescribed
coolant may damage the engine.

Check and replacement of oil in gearbox, axle drive and rear axle portals

Oil level in the gear mechanisms is checked oil gauges,
whitch is located in left rear part of the gearbox case.
A - Standard oil filling
Carry out checks when the engine is stopped.
MAINTENANCE INSTRUCTIONS
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FH12N084
XF_02_199
P12N001