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Back in VA!
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Discussion Starter · #1 · (Edited)
I have ruined my skinny clear plastic oil line (i believe it is from the hydraulic lift) on my 816. is there anywhere i can order or go pick this up? i also need to figure out where it was connected - the sneaky little line just ripped out due to me not being very smart.

i looked thought the parts manual and service manuals but couldnt find anything that looks similar. it's flexible clear plastic, adbout 1/4" OD. all i know is when it pulled out from its fitting oil squirted everywhere so i cut the engine off and it stopped.

Thanks,
crisco
 

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Old Iron Connoisseur
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The hydraulic system on your 816 should all be hard steel lines except for the two pieces of pressure line that go to the cylinder. Some pictures and it would be easier to figure out what pieces you need to get it back right.
 

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If it is for a pressure gauge, maybe capping it off is an option.
 

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Old Iron Connoisseur
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The tiny clear/white line should be the line to an oil pressure gauge. NAPA or any auto parts store should have it.
Were there oil pressure gauges on some of the 816's or was this a common addition? How much pressure should you expect out of a CCKA motor? While I'm asking .. how about a B series??
 

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The hydraulic system is usually at 950-1050 PSI.

The minimum engine oil pressure at WOT on a CCKA/B43/B48 is 30PSI.

This is per the CCKA and B series service manuals.

B43/B48 Service Manual

CCK/CCKA/CCKB Service Manual

The P224 engine oil pressure is different. THe manual says "Normal oil pressure should be 8 psi (55 kPa) or higher at 1500 rpm when the engine is at normal operating temperature"

P224 Service Manual
 

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Oddly Kohler gives no real spec for oil pressure on the M18 and M20 engines other than an implied one based on the Oil Sentry sensor testing. Based on that, the minimum oil pressure at idle should be about 5 psi. They do say that the oil pressure could be as high as 50psi. If I recall correctly my oil pressure when cold was about 50 [email protected] with 20w50 oil.
 

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As far as a engine oil pressure gauge goes, I have never seen one on any Gravely except for the GMT9000.

The 24G has an oil pressure light and the early 816 tractors do as well.

The 24G oil pressure light is also connected to a overhead sensor located at the back of the right side engine cover. If the oil pressure drops or the engine overheats, the "OIL" light will come on.

I have added Cole Hersee oil pressure lights to most of my tractors. If the choke was mounted on the upper part of the dash, it got relocated to the lower half and a indicator lamp put in it's place. It doesn't make sense to mount the lamp down below where it can't be seen.
 

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Discussion Starter · #10 ·
actually yeah it does have an oil pressure gage -- and that makes more sense too...

now i also know where its supposed to hook back into - i wasnt thinking about looking behind the pressure gage.

Thanks guys! another win for MTF !!! i'll try to get some pics when i get the repair done.
 

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Discussion Starter · #12 ·
actually i do love the oil gage! i think all mowers over 6HP should have one!

i'd like to add one to my Promaster. and even the Kubota!

i'll definitely make sure to get some pics up.
 

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Discussion Starter · #13 ·
went back and found these from a few months back.

you can see the white plastic line in the center top before i broke the line.


Here's a shot of the oil pressure gage... i'll get a closer pic later.


Also need to find a new seat as that one was returned to its original owner.
 

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Discussion Starter · #15 ·
that even makes more sense! THANKS DON. it also explains why it didnt show up in the service manual or any other gravely info.

it is a handy gauge to have though -- need to add to some of my other equipment. (including my subaru lol)
 
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