Maintenance Instructions
74
4.6 Steering Mechanism Adjustment and Maintenance
The tractor uses a separate hydraulic steering system consisting of a
cycloid rotary valve, a full hydraulic steering gear, a steering oil
cylinder, an oil tank, a track rod, a constant and overflow pump, and
oil lines.
Never adjust the steering during use. During maintenance,
should be noted that the constant and overflow pump
oil cylinder and oil inlet/outlet of the steering gear,
Figure 4-10 Steering Mechanism
as well as the oil line joints should be checked and tightened, in order to avoid oil leaks.
If you encounter an oil leak, check the gaskets and make sure that none of the seal rings are damaged.
Replace if necessary.
IMPORTANT ISSUES
:
The safety overflow pressure for the overflow valve on the constant current
overflow pump has been set before delivery. It should not be removed and adjusted without Nortrac approval.
After repair, loosen the two fittings on the oil cylinder and run the oil pump at a low speed to bleed any air from
the oil, then tighten the fittings.
4.7 Four-Wheel Drive Front Axle Adjustment and Maintenance
The tractor front axle can be divided into three chambers: the central oil chamber, the left end drive oil chamber
and the right end drive oil chamber.
4.7.3 Four-Wheel Drive Front Axle Central Oil Chamber Drain and Fill
The central oil chamber is in the middle of the front end of the tractor.
The oil level should be checked regularly from the sight glass. When the
oil level is low, oil should be added until the oil reaches the top line on
the sight glass. When changing the engine oil , unscrew the oil drain plug
from under the front axle and completely drain the used oil. Then, replace
and tighten the oil drain plug. Put fresh lube oil into the
oil filling port (1) and reinstall and tighten the fill plug.
Figure 4-11 Front Axle Central Oil Chamber
Adjustment and Maintenance
1. Oil Drain Plug
