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Trusted Contributor
Trusted Contributor

Re: Engine oil to coolant diifferential temperature G3616

Well, you really should work to resolve the cooling issue.  What are the real lube oil and jw temperatures running?  Do you ever see a warning on the inlet manifold air temp?  I would really like to know what these real temps are. 

 

Where is the engine located; what is the high air temp during the day?

 

If you raised the most severe value, you are just increasing the possibility of piston scuffing and possible seizure.  And you can't change the most severe setting.  It takes a dealer serviceman who can obtain a factory password from Cat to change the most severe or shutdown values on all of the parameters.  You can probably change the least severe or moderate severe values but you can't change the most severe without a password.

 

Best Regards,

Al Hunt

Contributor

Re: Engine oil to coolant diifferential temperature G3616

Thanks for your reply! 

I have checked the trip points, we have 1° C (2° F) for warning and 3° C (5° F) for shutdown. In sunny hot days the engines often stop by this event code (E337(3)). Is it allowed to slightly increase the most severe settings up to 4° C or 5° C to reduce the amount of shutdowns or we should start to solve the problem with heat exchangers (they don't give us the necessary outlet temperature in summer, especially when the outside temperature is larger than 26° C). 

 

p.s. all temperature regulators have been replaced.

Trusted Contributor
Trusted Contributor

Re: Engine oil to coolant diifferential temperature G3616

An update to the parameter settings:

 

2 deg F or 1 deg C-Warning or Moderate Severity

5 deg F or 3 deg C-Shutdown or Most Severe

 

These are the numbers to use in the parameter "Engine oil to coolant temp differential"

 

Best Regards,

Al Hunt

Trusted Contributor
Trusted Contributor

Re: Engine oil to coolant diifferential temperature G3616

The code (E123) and (E124) are not real event codes.  They may have existed for early G3600 A3 but they have been long removed.

The event code (E337) is a current code and has a very real condition to be aware of.  It is important that the jw coolant temp always be the same or above the engine oil temp.  If the oil temp gets hotter than the jw temp, the liner can shrink, decreasing the clearance between the piston and liner.  This can cause piston scuffing and might eventually lead to piston/liner failure.  Cat uses the event code (E337) to protect from this failure.  The (E337) warning/moderate severe value should b 2 deg F; the (E337) shutdown/most severe should be set to 5 deg F.  This is documented in Engine News published in Aug 2008.  If your monitoring parameters for this code are not set to these values, the engine is vulnerable to this type of failure.  You will need a Cat dealer tech to come do this, since a factory password is necessary to make this change to the settings.

 

The reason that the engine oil temp can get hotter than jw temp is that a jw temp can fail and not keep the coolant temp up while the engine oil temp is controlled by a separate set of temp regulators, which can keep the engine oil temp up.

 

If you are really experiencing the (E337) code, you really need to check out the jw temp regulators and maybe even replace them if they have been in operation for a year.

Contributor

Engine oil to coolant diifferential temperature G3616

Hello everybody!

 

Can anybody help me? What is the difference between the two event codes below:

 

1) Jacket Water to Engine Oil Temp Low

E123(1) warning, trip point 50 F

E124(3) shutdown, trip point 59 F

 

2) High Engine Oil to Engine Coolant Diff Temp

E337(1) warning, trip point 50 F

E337(3) shutdown, trip point 55 F

 

It seems that they are the same. Sometimes we have a warning E337(1), but don't have E123(1) at that time.