![]() Īnother one to check is the Draft control top link ,there is a spring inside there and if this is out of adjustment in some cases can cause your symptoms. If the pump is removed I would suggest that the internal AND external hydraulic adjustments be carried out ,just in case. Or less common a broken piston ring both require the pump be removed, repaired refitted and tested. Shuddering can also be caused by a stuck suction or discharge valve or possibly a piece of debris/piece of o ring etc anything that can jamb the valves open, in the hydraulic pump. If you remove the oil filler plug ,next to the gear sticks and pour about a gallon of diesel in there this will help wash out any debris that is lying on the bottom of the gearbox,it wont wash all out but it will help ,and make sure the gearbox is drained before reassembling, fill with the CORRECT oil and test. The filter is located underneath the transmission housing roughly about the centre below where your left heel would be,the filter cover has three set screws holding it on ,you may damage the gasket when you are taking the cover of so be carefull, there is a small clip in there that stops the retaining nut from coming of,take the clip of and undo the nut ,remove the nut,spring ,filter and the large O ring don't forget to put it back when reassembling. Dealing with the adjustments sounds quite complicated and I'm glad that I handed it over to someone else to sort out!įirst change the tractor transmission oil remove BOTH drain plugs one below the filler plug and the other further back about where your left heel would be remove the filter and wash out in petrol/ gas ,give it a blow out and make sure it is clean. It's a simple 5 minute test that could save a lot of time and trouble investigating the pump and other parts of the system. ![]() The key to the diagnosis was testing the lift after removing the load from the top link - the mechanic had come across this once before with another make but never with a Massey Ferguson. The Massey Ferguson 1135 row-crop tractor used the Perkins AT6.354 engine. The MF 1135 is equipped with a 5.8 L (354.0 cu·in) six-cylinder diesel engine and a two-speed power shift transmission with 12 forward and 4 reverse gears and dry disc clutch. This work was carried out by the local repairer and it appears to have cured the problem. The Massey Ferguson 1135 is a 2WD row-crop tractor manufactured by in from 1973 to 1978. We then found that there was some end play in the top link connection which suggested that the control spring needed adjustment - a simple enough job according to the workshop manual, but in the event corrosion prevented easy removal of the retaining nut and the lift cover had to be removed, some parts replaced and the pump/linkage reset using special MF equipment. As soon as the top link was reconnected it slowed right down. The lift then worked as it should, with the arms going up and down normally. ![]() We removed the top link connection and replaced it with a chain from the implement to the tractor frame. Things have moved on since my original post - (the pressure test had already been done and a reading of around 2500 psi obtained) - and the following may help others with a similar problem. ![]()
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