I have a M7040HD1 that has had lots of noise from the engine and hydraulics from the day I purchased it. The dealer has been good to work with but they don't have more ideas. They have isolated the hyd lines replaced the oil with super UDT (this made a huge difference in general noises ) . They replaced the oil cooler with a new style that dose not have a bypass valve around it . But once you here a noise it is hard to forget it. It is mainly at a idle and sounds like 2 blocks of wood hitting together very fast for 10 seconds this will happen every couple of minuets.
The factory has sent me a letter saying it is normal and the noise is coming from the relief valve on the oil cooler that has been removed. Has anybody else had noise complaints I have been watching this forum for almost a year now and haven't seen anybody else with this problem
Here is the letter they sent me
http://i1179.photobucket.com/albums/x389/harrelson88/M7040hd.jpg
The factory has sent me a letter saying it is normal and the noise is coming from the relief valve on the oil cooler that has been removed. Has anybody else had noise complaints I have been watching this forum for almost a year now and haven't seen anybody else with this problem
Here is the letter they sent me
http://i1179.photobucket.com/albums/x389/harrelson88/M7040hd.jpg