Doosan Machine Bypass Cut-off EPPR Valve Check

Doosan Machine Bypass Cut-off EPPR Valve Check.

 

Related Contents:

Doosan Data Monitoring System DMS-5 DMS-3 Free Download

Doosan Diagnostic Tool

 

 

Bypass Cut-off EPPR Valve Check

*Calibration judgement

6.1. Measure the input & output current of the bypass cutoff valve in certain condition

Ex) DX350LC-7, Normal outputs of bypass cutoff valve (Please refer the shop manual to check the exact value on each model)

 

The bypass valve opens while the engine is initially starting.

1) The bypass EPPR valve is open during engine startup (when at below 450 rpm): 0 mA

2) The bypass EPPR valve closes on the completion of engine startup (when at over 500 rpm): 600 mA

 

The bypass valve opens while the engine is warming up.

1) The bypass EPPR valve is open during engine warm-up (at a coolant temperature of below 15°C): 0 mA

2) The bypass EPPR valve closes on the completion of engine warm-up (at a coolant temperature of over 15°C): 600 mA

 

The bypass valve opens while the hydraulic oil is warming up.

1) The bypass EPPR valve is open during hydraulic oil warm-up using DMS-5: 0 mA

2) The bypass EPPR valve closes on the completion of hydraulic oil warm-up using DMS-5: 600 mA

 

The bypass valve opens in a VBO emergency.

1) The bypass EPPR valve is open during a VBO emergency: 0 mA

2) The bypass EPPR valve stays closed when not in a VBO emergency: 600 mA

 

6.2. Check the physical condition of the bypass cut-off EPPR valve

6.2.1. Assembly condition

6.2.2. External damage

6.2.3. Short circuit

Ex. DX350LC-7(Please refer the shop manual to check the exact value on each model)

 

More topics for Doosan,please refer to:Doosan Trouble Repair

auto

Recent Posts

Deutz EMR3 Engine Trouble Code 19 / 676 / ArHtCD_NoLd Solution

This instruction show you guide on how to solve Deutz EMR3 engine trouble code 19…

12 hours ago

Fendt 1000 S4 Tractor 1001 Crossgate Lever Calibration Guide

Here is the instruction show you guide on how to calibrate 1001 crossgate for Fendt…

3 days ago

How to Adjust Neutral for Kubota L3901 Tractor Transmission

This instruction show you guide on how to adjust neutral Kubota L3901 tractor transmission.  …

5 days ago

ISUZU Construction 4JJ1 Engine P0089 Fuel Rail Pressure Regulator Performance

Here is the instruction show you guide on how to solve ISUZU construction 4JJ1 engine…

1 week ago

Massey Ferguson Tractor 6700 Trouble Code SPN 97, FMI 31 Water in Fuel

Here is the instruction show you guide on how to solve Massey Ferguson tractor 6700…

1 week ago

How to Use SerDia2010 to Set Speed Droop for Deutz Engine

This instruction show you guide on how to use SerDia2010 diagnostic software to set speed…

2 weeks ago