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Massey Harris & Massey Ferguson Tractors Discussion Forum
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perkins trouble

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chad 9999

01-18-2007 19:00:56




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i have a 245 diesel and the kill switch rod that comes out of the top of the injector pump was leaking took the cover off and put o rings on both shafts got it back together primed it with the hand pump it started right up and ran a couple of minutes then died it would not start pulled it about 200 feet it started ran smooth for 20 or 30 minutes then died whats up




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TomTX

01-21-2007 08:13:53




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 Re: perkins trouble in reply to chad 9999, 01-18-2007 19:00:56  
If you followed my other post and are absolutely sure you got the right spring hook holes in the shaft and tombstone? If not take serial/model of tractor; engine serial; 3 numbers off CAV pump to MF dealer; talk to head mechanic (not salesman). With ALL the serial numbers listed, he can tell you which tombstone hole and which shaft hole to hook up. Other than that you may have gotten air into the system and have not bled it properly. Follow the steps in your MF Operator Manual exactly to completely bleed and you will be fine. Tom

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TomTX

01-21-2007 08:08:46




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 Re: perkins trouble in reply to chad 9999, 01-18-2007 19:00:56  
Is your pump a CAV? If it is a CAV, I have been there done that. The CAV is prone to leaking around the throttle shaft and the cut-off shaft. First you will need to get 2 or 3 cans of engine cleaner. Clean, clean, and clean again the whole area. After each spraying, hose off, let dry and do it again. Cleaner the better, if you drop a ball of grease/dirt into the top while the cover is off - big trouble, one piece of crud dropped into the bottom of the pump will cost you about $600-700. Now using a paper towel, start looking for your leak; it will show up real easy on the dry, clean paper towel. 1. MOST important thing is to have some paper and pencil BEFORE you take off the cover.
2. Remove shut-off linkage and throttle linkage. 3. Remove screws or nuts holding lid on. 4. DO NOT just lift up the top. Lift it just a little, very carefully so you can peek under it. A spring is attached from the lid to the bottom part of the pump. One end of spring is hooked on a wide post looking like a tombstone. The tombstone has several holes in it. Write down which hole the spring is hooked in before you remove it. The other end is through one of the holes in the flattened end of the control rod. Again write down the hole it is in before you remove it. This step is VERY IMPORTANT. If the spring is not reassembled to EXACTLY the same holes on both ends, the tractor will never run right again. The same pump can be used on different model tractors with the only difference being how the spring is hooked. My MF dealer mechanic can tell the proper holes by using the 3 numbers on the CAV. Now remove the spring, and lift off the lid. 5. Write down the model/year of tractor, and the model of the CAV pump and serial number. There are 3 different numbers on my CAV pump.
6. Take the cover with you and head to MF dealer and purchase a new gasket and four (4) tiny o-rings that fit around the throttle shaft and the shut-off shaft. Each shaft has 2 o-rings. If the o-rings are not leaking now, they soon will so replace all of them. Total cost of gasket and 4 o-rings is about $5 or $6. 7. You will need a little patience and two extra hands to get the spring attached on both ends and the new gasket fitted. I did this complete procedure on my MF 690 and now it has NO LEAKS.
Tom

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MF#1

01-19-2007 07:17:39




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 Re: perkins trouble in reply to chad 9999, 01-18-2007 19:00:56  
Try David P"s advice. When you replaced those O rings did you follow "TomTX" directions? If not, you may have other problems.



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DavidP, South Wales

01-19-2007 01:46:07




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 Re: perkins trouble in reply to chad 9999, 01-18-2007 19:00:56  
Hi,
The 245 is not avaialable in the UK so I'm going on a general path for MF's with this problem.
If the tank is mounted above the engine you will probably have a fuel strainer mounted on top of the tank. This will probably be blocked. If you have no strainer, then the tap will probably be blocked. If those are clear, disconnect the pipe at the lift pump outlet. Operate by hand or turn the engine over and you should have a good supply of fuel. If OK there inspect your filters and replace. Check for good sealing of the filter rings and bleed screw on top of filter body,
Slacken both vent screws on pump body and prime until you get good flow. Slacken one or more of the pipe nuts at the injectors and turn over until you have delivery. Should start after that.
DavidP

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