View Full Version : Caterpillar D6M (1998) Hydraulc Blade

08-03-2018, 12:39 PM
I have recently replaced both (forward/backward tilt) cylinders on my 6-way blade recently. Last weekend I was pushing over a tree and I heard a pop from the front left cylinder and then lost push power on the blade when I push so the blade tilts backwards now when I push anything. It will go back out using the hand actuator, so the hydraulics seem to still all be working but when I push something now the blade will tilt backwards and not stay in place. The cylinder is under warranty but I don't know if it is the internal packing or is there a check valve between the hand actuator and the cylinder that is allowing backflow? Any ideas?

Rome K/G
08-03-2018, 03:14 PM
"Thats what you get for pushing trees out with a 6 way blade!!"

Old Magnet
08-03-2018, 08:40 PM
I'd be suspect of the recently replaced tilt cylinders if they were working correctly before....or maybe they weren't !!!. Whoever can troubleshoot the system is going to require the tractor and blade s/n as there are different cylinders used, some with built in cushion valves and some without.