2-S26
ZD321, ZD326, ZD331, WSM
TRANSAXLE
[4] DISASSEMBLING HYDROSTATIC TRANSMISSION AND REAR AXLE
GEAR CASE ASSEMBLY
Draining Transmission Fluid
CAUTION
To avoid personal injury :
• Be sure to stop the engine and remove the key before
changing or checking the oil.
• Allow transmission case to cool down sufficiently; oil can be
hot and may cause burns.
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 new fluid from filling port after removing the filling plug (4)
up the upper notch on the dipstick.
• If takes time to have the oil poured from the transmission
case reach 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.
• Operate only at low RPM’s immediately after changing the
transmission fluid and filter cartridge.
Keep the engine at medium speed for a few minutes to
insure proper lubrication of all parts so there is no damage
to transmission.
• Use only multi-grade transmission oil. Use of other oils may
damage the transmission of hydraulic system.
Refer to “LUBRICANTS, FUEL AND COOLANT”. (See page
G-7.)
• Do not mix different brands oil together.
W1033436
Transmission fluid capacity
12.1 L
12.8 U.S.qts
10.6 Imp.qts
(1) Transmission Oil Filter
(2) Drain Plug
(3) Rear Axle Gear Case LH
(4) Oil Plug and Breather Cup
(5) Dipstick
A : Oil level acceptable within this
range.
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