Dixon 968999723 Benutzerhandbuch

lUBRICATION

52

-Dixon

Purging 
Due to the effects air has on efficiency in hydrostatic 

drive applications, it is critical that it is purged from the 

system.
These purge procedures should be implemented 

any time a hydrostatic system has been opened to 

facilitate maintenance or any additional oil has been 

added to the system.
The resulting symptoms in hydrostatic systems may 

be:

 Noisy operation.

1. 

 lack of power or drive after short term 

2. 

operation.

 High operation temperature and excessive 

3. 

expansion of oil.

Fluid Change
This transaxle is designed with an external filter for 

ease of maintenance. To ensure constant fluid quality 

levels and longer life an oil filter change interval of 

every 

200 hours is recommended.

The following procedure can be performed with the 

pump installed in the vehicle, and the vehicle on level 

ground. Apply the bypass valve and lock the vehicle 

parking brake.

Place an oil drain pan with a two gallon 

1. 

capacity beneath the oil filter. Remove the 

oil filter from the pump.
After the oil has drained, wipe the filter 

2. 

base surface off and apply a film of new oil 

to the gasket of the new replacement filter.
Install the new filter by hand, turn ¾ to one 

3. 

full turn after the filter gasket contacts the 

filter base surface.
Drain old oil filters of all free-flowing 

4. 

oil prior to disposal. Place used oil in 

appropriate containers and dispose of it in 

accordance with laws in your area.
Remove the cap from the pump’s 

5. 

expansion tank located on the vehicle 

frame.
Fill reservoir with SAE 10W30 oil to just 

6. 

above the MIN-ADD line on the reservoir. 

After purging, check levels and add oil if 

necessary.
Reinstall the tank cap by hand. Do not 

7. 

overtighten.
Proceed to the purge procedure.

8. 

8061-016

1. Pump filter
2. Pump reservoir
3. Fluid fill lines
Changing the hydraulic pump oil filter

1

2

3

Before starting, make sure the pump is at the proper oil 

level. If it is not, fill to the specifications outlined earlier.
The following procedures are best performed with the 

vehicle drive wheels off the ground, then repeated 

under normal operating conditions.

Disengage the brake if activated.

1. 

With the bypass valve open and the 

2. 

engine running at fast idle, slowly move 

the directional control in both forward and 

reverse directions (5 or 6 times). As air is 

purged from the unit, the oil level will drop.
With the bypass valve closed and the 

3. 

engine running, slowly move the directional 

control in both forward and reverse 

directions (5 to 6 times). Check the oil 

level, and add oil as required after stopping 

the engine.
It may be necessary to repeat Steps 2 and 

4. 

3 until all the air is completely purged from 

the system. When the transaxle operates 

at normal noise levels and moves smoothly 

forward and reverse at normal speeds, 

then the transaxle is considered purged.
After the vehicle has been used two times, 

5. 

the oil level should be checked while the oil 

is cold and adjusted accordingly.