Tag: Kubota Repair

Here is the instruction show you guide on how to perform relief valve setting pressure for Kubota L3301 L3901.

 

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Relief Valve Setting Pressure

1 Disconnect the power steering delivery pipe joint bolt.

2 Install the adaptor E instead of joint bolt, and then set a thread joint, cable and pressure gauge.

3 Start the engine and set the engine speed at max. speed.

4 Fully turn the steering wheel to the left or right and read the pressure when the relief valve functions.

5 Stop the engine.

6 If the pressure is not within the factory specifications, check the pump delivery line, and adjust relief valve setting pressure by turning adjusting screw (1).

Here is the instruction show you guide on how to separate clutch housing and mid for Kubota L4701 tractor.

 

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Outer Components

1 Remove the mounting bolts and the steering support (1).

2 Disconnect the differential lock pedal.

3 Remove the step (2) and the main wiring harness.

 

Suction Pipe and Hydraulic Block

1 Remove the suction pipe (5).

2 Remove the hydraulic block (3).

3 Remove 3P delivery pipe (1).

4 Remove the brake connecting rod R.H. (4) and L.H.. (When reassembling)

Apply grease to the O-rings.

 

Separating Clutch Housing Case from Mid Case

1 Loosen and remove the screws and the nuts securing the clutch housing case (1) to mid case (2).

2 Separate the clutch housing case (1) from the mid case (2). (When reassembling)

Replace the gasket with a new one.

 

Separating Mid Case from Transmission Case

1 Loosen and remove screws and nuts securing mid case (1) to transmission case (2).

2 Separate mid case from transmission case (2).

(When reassembling)

Apply liquid gasket (Three Bond 1208D or equivalent) to joint face of mid case and transmission case after eliminate water, oil and stuck liquid gasket.

Kubota L3301 Excavator Cruise Control Linkage and Maximum Travel Speed

 

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CAUTION
• Stop the engine when adjusting the cruise control linkage and pedal stroke.
NOTE
• Be sure to adjust the HST neutral position.
• Be sure to check whether the “traveling speed coefficient” is suitable for tire size.
1. Loosen the HST pedal mounting screws (4) and tighten the screws (4) while pulling up the front of HST pedal (1).
2. Adjust the height a of the pedal stopper bolt (Forward) (3) to approx. 25 mm (0.98 in.) from the step.
3. Operate the tractor actually and make whether the tractor can put on sufficient speed.
4. Set the cruise control lever to fully forward (Maximum position).
HST pedal also tilts.
5. Measure the clearance b between bottom of HST pedal and tip of pedal stopper bolt (Forward) (3).

 

6.If the measurement is not within factory specification, adjust by the cruise adjusting rod (5). (Cruise Linkage Adjustment.)

7.Shorten the pedal stopper bolt (Reverse) (2) to the position where the length of the bolt is not touched to the HST pedal (1) even if the HST pedal is fully depressed rearward.
8. Lengthen the length of the pedal stopper bolt (Reverse) (2) gradually with the HST pedal fully depressed rearward to contact to the HST pedal.

(Reference)
• Height “a”: 25 mm (0.98 in.)
• Clearance “b”: 2 to 6 mm (0.08 to 0.2 in.)
• Height “c”: 15 mm (0.59 in.)

 

(1) HST Pedal
(2) Pedal Stopper Bolt (Reverse)
(3) Pedal Stopper Bolt (Forward)
(4) HST Pedal Mounting Screw
(5) Cruise Adjusting Rod
a: Stopper Bolt Height (Forward)
b: Clearance between HST pedal
and stepper bolt (Forward)
c: Stopper Bolt Height (Reverse)
F: Forward
R: Reverse