How to Change Transmission Fluid/Replace Hydraulic Oil Filter for Kubota L3301 Tractor

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Here is the instruction show you guide on how to change transmission fluid/replace hydraulic oil filter for Kubota L3301,L3901,L4701 tractors.

Preparations:

2022 Kubota Takeuchi Diagmaster v22.08.01 v4.1.2 Software Free Download
Kubota DST-i Diagnostic Adapter

Kubota EPC Spare Parts Catalogue 2021.06 Download

Cleaning Magnetic Filter
CAUTION
• Be sure to stop the engine before changing the oil filter cartridge.
• Allow engine to cool down sufficiently, oil can be hot and can burn.
1 Remove the drain plugs at the bottom of the transmission case and drain the oil completely into the oil pan.
2. After draining reinstall the drain plugs.
3 Remove the oil filter.
4 Wipe off metal filings from the magnetic filter with a clean rag.
5 Put a film of clean transmission oil on the rubber seal of the new filter.
6 Quickly tighten the filter until it contacts the mounting surface, then tighten it by hand an additional 1/2 turn only.
7 Fill with the new KUBOTA SUPER UDT fluid up to the upper notch on the dipstick.
8 After running the engine for a few minutes, stop the engine and check the oil level again, add oil to the prescribed level.
9 Make sure that the transmission fluid does not leak past the seal on the filter.

IMPORTANT
• To prevent serious damage to the hydraulic system, use only a KUBOTA genuine filter.
• Do not operate the tractor immediately after changing the transmission fluid.
Run the engine at medium speed for a few minutes to prevent damage to the transmission.

Replacing Fuel Filter
1 Remove the fuel filter.
2. Put a film of clean fuel on rubber seal of new filter.
3. Tighten the filter quickly until it contacts the mounting surface.
Tighten filter by hand an additional 1/2 turn only.
4. Bleed the fuel system.

Cleaning Water Separator
This job should not be done in the field, but in a clean place.
1 Close the fuel valve.
2 Unscrew the retainer ring and remove the cup, and rinse the inside with kerosene.
3 Take out the element and dip it in the kerosene to rinse.
4 After cleaning, reassemble the water separator, keeping out dust and dirt.
5 Bleed the fuel system.

(1) Fuel Valve
(2) Retainer Ring
(3) Cup
(4) O-ring
(5) Element
(6) Spring
(7) Red Float

More repair case for Kubota,please refer to:Kubota Trouble Repair

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