The fluid in the transmission case is also used for the
hydrostatic drive system.
1. To drain the transmission oil, place oil pan
underneath the transmission case and the rear axle
gear case (RH and LH) and remove the drain plug
at the bottom of the transmission case and the rear
axle gear case (RH and LH).
2. After draining, reinstall the drain plugs.
3. Fill with UDT or
SUPER UDT
hydrostatic
transmission fluid or its equivalent up to the upper
line of the gauge.
IMPORTANT :
• It takes time to send the oil from the
transmission case to the rear axle case (RH
and LH).
Pour the regulated amount of oil slowly.
4. After running the engine for a few minutes, stop it
and check the oil level again; add oil to the
prescribed level.
IMPORTANT :
• Operate only at low rpms immediately after
changing the transmission fluid and filter.
• Keep the engine at medium speed for a few
minutes to insure proper lubrication of all
parts so there is no damage to transmission.
(1) Drain plug
(2) Hydraulic oil filter
(1) Drain plug
(2) Rear axle gear case LH
(1) Oil level dipstick
(2) Oil plug and breather cup
(A) Oil level is acceptable within
this range.
2. Replacing hydraulic oil filter
WARNING
To avoid serious injury or death:
• Be sure to stop the engine and remove the key
before changing the oil filter.
• Allow the transmission case to cool down
sufficiently, as oil can be hot and may cause
burns.
The oil filter must be changed every 400 service hours.
MAINTENANCE
EVERY 400 HOURS
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ZD1211,ZD1221