IF HOSE BRUST WHAT SHOUILD WE DO? [Fault 5]

Trouble in Hydraulic Hose Assembly

You are on n4net and this is indian railway track machine trouble shooting technology with you.

This is a series of trouble shooting technique  for the track machine working in Indian Railway.  When you study  this you able to rectify a fault of machine. If this is helpful for you than share with others. It may helps them. Thanks for sharing.

Now we study about "Hydraulic Hose Assembly"

What  the fault acctually is? 

Fitting blew off    at the end of the hose. 

Why it happen?

1.   It may be due to  the wrong fitting has been put on the hose. In the case of a crimped fitting the wrong machine setting may have been used resulting in over or under-crimping.   

2.  The fitting may have been fixed improper-ly to the hose. 

 What should we do?

1.  Check manufacturer's instructions.  The hose should be installed with enough slack to compensate for the possible 4% shortening that may occur when the hose is pressurized.  Recheck the manufacturer’s specification and part nos. 

 2.  The fitting should be fixed properly. 

IF HOSE BRUST WHAT SHOUILD WE DO? [Fault 6]

Trouble in Hydraulic Hose Assembly

You are on n4net and this is indian railway track machine trouble shooting technology with you.

This is a series of trouble shooting technique  for the track machine working in Indian Railway.  When you study  this you able to rectify a fault of machine. If this is helpful for you than share with others. It may helps them. Thanks for sharing.

Now we study about "Hydraulic Hose Assembly"

What  the fault acctually is? 

The hose fitting has been pulled out of the hose.  The hose has been consider- ably stretched out in length.  

Why it happen?

1. This may not be high pressure application hose. 

2. Insufficient support of  the hose.  It is essential  to support very long lengths of hose, especially if they are vertical.   

 What should we do?

1. Use the hose as per the pressure of fluid line. 

2. All    the  hoses should be supported by clamping the same at proper distance giving sufficient slacks between two clamps to make up for the possible 4% shortening that could take place when the hose is pressurised. 

IF HOSE BRUST WHAT SHOUILD WE DO? [Fault 4]

Trouble in Hydraulic Hose Assembly

You are on n4net and this is indian railway track machine trouble shooting technology with you.

This is a series of trouble shooting technique  for the track machine working in Indian Railway.  When you study  this you able to rectify a fault of machine. If this is helpful for you than share with others. It may helps them. Thanks for sharing.

Now we study about "Hydraulic Hose Assembly"

What  the fault acctually is? 

Hose appears to be flattened out in one or two areas and appears to be kinked.  It has burst in this area and also appears to be twisted. 

Why it happen?

Torquing of a hydraulic control hose will tear off the reinforcement layers and allow the hose to burst through the enlarged gaps between the braided plaits of wire strands. 

 What should we do?

Use swivel fittings or joints to be sure that  there is no twisting force on a hydraulic hose. 

IF HOSE BRUST WHAT SHOUILD WE DO? [Fault 3]

Trouble in Hydraulic Hose Assembly

You are on n4net and this is indian railway track machine trouble shooting technology with you.

This is a series of trouble shooting technique  for the track machine working in Indian Railway.  When you study  this you able to rectify a fault of machine. If this is helpful for you than share with others. It may helps them. Thanks for sharing.

Now we study about "Hydraulic Hose Assembly"

What  the fault acctually is? 

Hose has burst. An examination indicates the wire braid is rusted and the cover has been cut, abraded or deteriorated badly. 

Why it happen?

The primary function of the cover is to protect the reinforcement. Elements that may destroy or remove the hose covers are: 
1. Abrasion. 
2. Cutting 
3. Battery Acid. 
4. Chemical Cleaning Solutions. 
5. Heat. 
6. Extreme Cold. 
  

What should we do?

Once the cover protection is gone, the wire reinforcement is susceptible to attack from moisture or other corrosive matter. hence take care of  :-
1. Abrasion. 
2. Cutting 
3. Battery Acid. 
4. Chemical Cleaning Solutions. 
5. Heat. 
6. Extreme Cold. 

HOSE BROKEN CAUSE 2 [Fault 2]

Trouble in Hydraulic Hose Assembly

You are on n4net and this is indian railway track machine trouble shooting technology with you.

This is a series of trouble shooting technique  for the track machine working in Indian Railway.  When you study  this you able to rectify a fault of machine. If this is helpful for you than share with others. It may helps them. Thanks for sharing.

Now we study about "Hydraulic Hose Assembly"

What is the fault acctually?

The hose has burst, but there is no indication of multiple broken wires in the entire length of the hose.  The hose may have burst in more than one place. 

What is cause for the fault developing?

This would indicate that the pressure has exceeded the minimum burst strength of the hose.   

How to fix this problem?

Either a stronger hose is needed or the hydraulic circuit has a mal-function which is causing unusually high pressure conditions. 

IF HOSE BRUST WHAT SHOUILD WE DO? [Fault 1]

Trouble in Hydraulic Hose Assembly

You are on n4net and this is indian railway track machine trouble shooting technology with you.

This is a series of trouble shooting technique  for the track machine working in Indian Railway.  When you study  this you able to rectify a fault of machine. If this is helpful for you than share with others. It may helps them. Thanks for sharing.

Now we study about "Hydraulic Hose Assembly"

What  the fault acctually is? 

The hose has burst on examination after stripping back the cover of the wire reinforcement reveals random broken wires in the entire length of the hose. 

Why it happen?

This indicates high frequency pressure impulse condition.  SAE impulse test require- ments are as under: 
(a) For a double wire braid reinforcement are 2,00,000 cycles of 133% of recommended working pressure. 
(b)For a four spiral wrapped reinforcement (100R-9) are 3,00,000 cycles at 133% maximum operating pressure at +200 0 F (93 0 C). 

 What should we do?

If the extrapolated impulses in a system amount to over a million in a relatively short time a spiral reinforced hose would be the better choice.