1. TROUBLESHOOTING. Kubota RTV1140CPX

RTV1140CPX, WSM

1. TROUBLESHOOTING

HYDROSTATIC TRANSMISSION

Symptom

System Will Not

Operate in Either

Direction

Vibration and Noise

Loss of Power

Oil level is low

Oil level is low move smoothly

Probable Cause

Control linkage or cable defective

Charge pressure is too low

Check and high pressure relief valve does not move smoothly

Component parts defective

Oil level is too low

Control linkage or cable defective

Charge pressure is too low

Check and high pressure relief valve does not move smoothly

Component part is defective

Control linkage or cable defective

Charge pressure is too low

Check and high pressure relief valve does not

Component parts defective

2-S1

TRANSMISSION

Solution

Check oil level or fill oil to proper level

Repair linkage

Solution order

1. Replace oil filter cartridge

2. Check charge pressure

3. Inspect or flush charge relief valve

Inspect or replace check and high pressure relief valve

Replace hydrostatic transmission assembly

Check oil level or fill oil to proper level

Repair linkage

Solution order

1. Replace oil filter cartridge

2. Check charge pressure

3. Inspect or flush charge relief valve

Inspect or replace check and high pressure relief valve

Replace hydrostatic transmission assembly

Check oil level or fill oil to proper level

Repair linkage

1. Replace oil filter cartridge

2. Check charge pressure

3. Inspect or flush charge relief valve

Inspect or replace check and high pressure relief valve

Replace hydrostatic transmission assembly

Reference

Page

G-8

2-S22

G-21

2-S9

2-S37

2-S37

2-S39

G-8

2-S22

G-21

2-S9

2-S37

2-S37

2-S39

G-8

2-S22

G-21

2-S9

2-S37

2-S37

2-S39

KiSC issued 05, 2014 A

RTV1140CPX, WSM

Symptom

Transmission Oil

Over Heats

Low transmission oil level

Radiator net clogged

Excessive machine load

Improper charge pressure

Machine Will Not

Stop in Neutral

Position

Control linkage is out of adjustment or sticking

System Operates in

One Direction Only

Control linkage defective

Check and high pressure relief valve defective

TRAVELLING GEAR SHIFT SECTION

Symptom

Probable Cause

Probable Cause

Noise from

Transmission

Transmission oil insufficient

Gear worn or broken

Bearings worn

Gear Slip Out of Mesh

Shift fork spring tension insufficient

Shift fork or shiftier worn

Shift fork bent

TRANSMISSION

Solution

Fill transmission oil level up to proper level

Clean radiator net

Reduce machine load

1. Check high relief pressure

2. Replace transmission oil filter cartridge

3. Replace check and high pressure relief valve

4. Inspect and replace charge relief valve

Repair or replace linkage

Adjust neutral position

Repair or replace linkage

Replace check and high pressure relief valve

Reference

Page

G-8

–

–

2-S6, 2-S7

G-21

2-S37

2-S37

2-S22

2-S10

2-S22

2-S37

Solution

Refill

Replace

Replace

Replace

Replace

Replace

Reference

Page

2-S18

2-S27

–

2-S30

2-S30

2-S30

2-S2

KiSC issued 05, 2014 A

RTV1140CPX, WSM

TRANSMISSION

DIFFERENTIAL GEAR SECTION

Symptom Probable Cause Solution

Excessive or Unusual

Nose at All Time

Noise while Turning

Differential Lock Can

Not Be Set

Differential Lock

Pedal Does Not

Return

Improper backlash between spiral bevel pinion and bevel gear

Improper backlash between differential pinion and differential side gear

Bearing worn

Insufficient or improper type of transmission fluid used

Differential pinions or differential side gears worn or damaged

Differential lock binding (does not disengage)

Bearings worn

Differential lock shift fork damaged

Differential lock shiftier mounting pin damaged

Differential lock pin damaged

Differential lock pedal return spring weaken or damaged

Differential lock fork shaft rusted

Adjust

Adjust

Replace

Replenish or change

Replace

Replace

Replace

Replace

Replace

Replace

Replace

Repair

Reference

Page

2-S48

2-S44

–

2-S18

2-S32

2-S31

–

2-S31

2-S31

2-S31

–

2-S31

9Y1210293TRS0001US0

2-S3

KiSC issued 05, 2014 A