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1962 Dexta SIMMS injection pump question


 
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nothingbutdarts
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PostPosted: Thu Nov 23, 2017 1:18 pm    Post subject: 1962 Dexta SIMMS injection pump question Reply to specific post Reply with quote

1962 Dexta 3 cyl. diesel with a SIMMS pump, I have looked thru what I have of a service manual for this unit trying to find out if the SIMMS injection pump is fed lubrication oil from the engine lube oil syst. or it the injection pump has it's own oil reservoir in it that needs changed?

I see in the injection pump rebuild section it says, after reassemble and before running the pump on the test stand to:

"Add engine oil to the cam box unit until it runs out of the oil level hole at the base of the pump"

I have look over the pump on the tractor and also have another injection pump I have to replace the one on presently on it since I believe the one on it is bad. For the likes of me, I can't find the fill hole or the level hole they talk about. Might someone be able to help me with this information??? I don't want to damage a good fuel pump!

I would also guess you would use regular engine oil in the fuel pump for this purpose.

I read thru the "LUBE" section of the manual and it says nothing about pressure lubrication to the injection pump.

Thank You!

Baffled in Colorado!
 
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Bob
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PostPosted: Thu Nov 23, 2017 5:30 pm    Post subject: Re: 1962 Dexta SIMMS injection pump question Reply to specific post Reply with quote

Is there an oil line from a port in the engine block to the injection pump?
 
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nothingbutdarts
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PostPosted: Thu Nov 23, 2017 5:36 pm    Post subject: Re: 1962 Dexta SIMMS injection pump question Reply to specific post Reply with quote

CVPost-Bob wrote:
(quoted from post at 18:30:56 11/23/17) Is there an oil line from a port in the engine block to the injection pump?


I do not think there is but, tomorrow I will look a lot closer!

Thanks!
 
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Bob
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PostPosted: Thu Nov 23, 2017 5:53 pm    Post subject: Re: 1962 Dexta SIMMS injection pump question Reply to specific post Reply with quote

I'm NOT a Dexta person, but typically older in-line injection pumps that are oiled by engine oil have a little oil feed line from an oil galley in the engine block, and oil drains back to the crankcase the front area of the pump that mounts to the timing cover.

I DO NOT know if your Dexta is set up like that vs. having an oil fill port and an oil check port.
 
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JDEM
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PostPosted: Sat Nov 25, 2017 7:06 am    Post subject: Re: 1962 Dexta SIMMS injection pump question Reply to specific post Reply with quote

As I recall that injection pump has no lube connection to the engine. It has its own closed sump and you have to check it and
fill it once in awhile. Or - drain it when it fills with diesel and replace with motor-oil.
 
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nothingbutdarts
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PostPosted: Sat Nov 25, 2017 8:21 am    Post subject: Re: 1962 Dexta SIMMS injection pump question Reply to specific post Reply with quote

Thank You both very much, I will have to dig up some more information on how to drain and fill it.
 
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SkipperII
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PostPosted: Fri Dec 01, 2017 11:04 am    Post subject: Re: 1962 Dexta SIMMS injection pump question Reply to specific post Reply with quote

Can you post, or send me a clear picture of the side of your injection pump. I worked on the Major series, with Simms pumps, a lot, and might be able to help you.
 
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nothingbutdarts
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PostPosted: Fri Dec 01, 2017 11:27 am    Post subject: Re: 1962 Dexta SIMMS injection pump question Reply to specific post Reply with quote

I will try to post one this evening.
 
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nothingbutdarts
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PostPosted: Sat Dec 02, 2017 9:33 am    Post subject: Re: 1962 Dexta SIMMS injection pump question Reply to specific post Reply with quote

Hope these turn out.
 
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Deutz Lover
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PostPosted: Sat Dec 02, 2017 1:11 pm    Post subject: Re: 1962 Dexta SIMMS injection pump question Reply to specific post Reply with quote

I think the Simms pneumatically governed pumps on the early Dextas do not have a dedicated oil fill plug. I was told by a reapair shop to put oil in these regardless so the only way I know how is to take off the lift pump or part of it and put it is there.

Normally the pump is lubricated by the diesel fuel that leaks past the plungers in the upper pump body, but I think this is not the most efficient or best way to lubricate the lower parts.

There is a drain. There should be a pig-tail pipe on the bottom of the pump body. Excess lubricant flows out of this overflow pipe to keep the level constant, so it appears that these were designed to use diesel fuel. I have checked three Simms Pneumatically governed injection pumps and all have the pig-tail.

I am thinking of drilling and tapping for a fill plug like in the Minimec pumps used in the super Dextas. I have a conversion Minimec p4596 pump I am going to check.
 
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