Where is this located? The only non return valve I see is not for this systemGood day
Suggest you check out the non-return valve that retains the pressure.
Kind re
Thanks, just read through the post and the testing procedure will help tremendously. Do the codes that I just posted indicate anything? Thanks again for the help guys.
Hi Mr.Nige,E1438(2) Event - Low Swing Accumulator #2 Gas Pressure
Event will only be detected after 6 hours have passed from the previous key off. Event is active when the gas pressure is below 13000 kPa (1885.5 psi) @ 20° C (68° F). - Accumulator System is Disabled -
Event deactivates when pressure is in normal range, 16200 kPa (2349.6 psi) @ 20° C (68° F) to 22000 kPa (3190.8 psi) @ 20° C (68° F). This reset requires a 6-hour interval from the previous key off.
Check indicated swing accumulator for damage. Check the precharge pressure with a gage and then charge back to specification. Refer to Testing and Adjusting, "Accumulator (Swing) - Test and Charge"and, "Accumulator (Swing) - Test and Charge - Nitrogen Booster Group".
Thanks for your information.Not an excavator expert by any means. Per Eriksson is probably the best guy to answer your question.
I think it depends on the Serial Number prefix whether or not it is hybrid - and there are about 20 different prefixes of 336E.
I just have found out specalog of CAT 336E L H.I suspect that you are correct regarding this particular machine. I understood your question to be "are all 336E excavators of the hybrid type.?", to which the answer is I don't know.
Thanks for your informations, especially about accumulator specifications and how to recharge it.There's both an 336E XE which is the hybrid version with it's own hydraulic system but also as a regular 336E with the same hydraulic system as all other E series machines so you have to look at the serialnumber prefixes to know for sure.
These are XE or hybrid
RZA
HDW
JEA
SSL
GNY
While these are normal machines
YCE
YEP
BMH
DPX
BZY
The big accumulators have a precharge of 2785psi @ 68F with a gas volume of 8.45 gallons so a normal nitrogen gas bottle won't be of much use when filling these so you can use either a booster pump or as we can do around here, order special nitrogen bottles with a higher pressure and special regulators fitted on them, expensive but not as crazy expensive as the booster pump setup.