7/25/2023 0 Comments Mf 135 draft control![]() ![]() Nick it thru both sides and 'collapse it', then with draw the plunger assembly, and repair as necessary. ![]() To add to Jerry's reply, you may even have to 'cut it' with the blue flame, as you don't have the tool to unscrew it. The hydraulic lift cover mechanism is influenced by the operator using the draft & position control levers, an implements pulling or pushing force on the toggle spring & the upward or downward movement of the lift cover arms. Posted: Fri 8:54 pm Post subject: Re: MF 135 Draft control spring removal. It either pumps oil or dumps oil or both through the control valve. I would fit a temporary hydraulic pressure gauge to monitor the hydraulic pressure ,you can fit the gauge under the seat on the left or right hand side ,the left is easier remove the horizontal allen headed grub screw the thread is 3/8 bsp/npt taper thread use thread tape to seal the threads. The oil in the ram cylinder returns through the same standpipe & dumps. When the operator places the lever in the down position the lift covers mechanism closes the pumps control valve and the pumps pressure is dumped back into the diff housing. When oil enters the ram cylinder it forces the piston forward and the arms are raised. The oil flows up through the standpipe between the pump & lift cover. Four pistons moving back & forth suck oil in through the chambers and push it out through the same chamber outlet valves. When the tractors engine is running the hydraulic pump operates continuosly getting its drive from the transmission PTO output shaft. ![]()
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