Kubota Z723, Operator'S Manual

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PERIODIC SERVICE 58
ENGLISH
A
Always loosen the breather port plug when adding oil.
If breather port plug is not loosened, air can remain in
the transaxle and reduce performance.
10. Fill expansion tank with new oil and allow oil to drain
into transaxle. Continue until oil just comes out from
the breather port plug.
11. Tighten the breather port plug. Torque to 11.3-13.5 N-
m (8.34-9.95 lbf-ft).
12. Continue to fill the transaxle through the expansion
tank until the "MAX" line is reached on the expansion
tank. (See "Checking Transaxle Fluid Level" in "DAILY
CHECK" in "PERIODIC SERVICE" section.)
13. Reinstall the oil tank cap by hand. Do not overtighten.
14. Repeat steps 1-13 on the opposite side transaxle
drive.
15. Purge any remaining air from the transaxles.
C Purging Procedure
Before starting, make sure the transaxle is at the
proper oil level. If it is not, fill to the specifications
outlined in this manual.
The following procedures are best performed with the
machine drive wheels off the ground, and then
repeated under normal operating conditions. If this is
not possible, perform this procedure in an open flat
area free of any objects or bystanders.
1. Open the bypass valves of both transaxles with the
bypass levers. (See "Hydrostatic Transaxle Bypass
Lever" in "OPERATING THE MACHINE" section.)
2. Start the engine and disengage the parking brake.
3. Set the engine throttle to low idle.
4. Slowly move the motion control levers to the max
forward position. Hold for 30 seconds.
5. Slowly move the motion control levers to the max
reverse position. Hold for 30 seconds.
6. Place the motion control levers in neutral lock and
apply the parking brake.
7. Close the bypass valves of both transaxles.
8. Set the engine throttle to high idle.
9. Disengage the parking brake.
10. Slowly move the motion control levers to the max
forward position. Hold for 30 seconds.
11. Slowly move the motion control levers to the max
reverse position. Hold for 30 seconds.
12. Place the motion control levers in neutral lock, apply
the parking brake, and stop the engine.
13. Check the transaxle oil level. If oil level is below the
"MIN" line, proceed to step 14. Otherwise, the purging
process is complete.
14. Loosen breather port plug by 3 turns.
15. Fill expansion tank with new oil and allow oil to drain
into transaxle. Continue until oil just comes out from
the breather port plug.
16. Tighten the breather port plug. Torque to 11.3-13.5 N-
m (8.34-9.95 lbf-ft).
17.Continue to fill the transaxle through the expansion
tank until the "MAX" line is reached on the expansion
tank. (See "Checking Transaxle Fluid Level" in "DAILY
CHECK" in "PERIODIC SERVICE" section.)
18.Repeat steps 1 through 13 until all air is purged from
the transaxles.
(1) Oil drain plug
(2) Oil filter
(3) Oil tank cap
(4) Breather port plug
(5) Transaxle fluid expansion tank (A) MAX line
(B) MIN line