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CAT skid steer blowing off oil plug

J

justafarmer

Well-Known Member
Joined
Dec 19, 2011
Messages
61
Location
Canada
Have a 287B loader and in winter it blows the rubber oil filler cap off. Has this happened to anyone else? I cant seem to find a valve cover vent or anything, i wondered if it freezes from time to time. There is another cap towards the front of the machine on the top of the valve cover. Does anyone know if this cap is supposed to be vented?
 
D

Delmer

Senior Member
Joined
Jan 3, 2013
Messages
8,900
Location
WI
Never in a skid steer, but I've had the vents freeze up and the engine start leaking oil on a couple occasions. It looked like a frozen foam inside the vent, just let the engine sit for a while to melt the ice out and then started back up.
 
Steve Frazier

Steve Frazier

Founder
Staff member
Joined
Oct 30, 2003
Messages
6,623
Location
LaGrangeville, N.Y.
On my 248 with the Perkins, the breather froze up. On the side of the block you'll see a plastic contraption that has a hose running to the crankcase, condensation builds up within it and can freeze making it malfunction. It happened one night when we were blowing snow from sidewalks in town and the smoke that poured out of the exhaust was ridiculous. Actually had oil dripping from the muffler.
 
Cmark

Cmark

Senior Member
Joined
Jan 2, 2009
Messages
3,178
Location
Australia
There's a service letter out for modifying the breather system to fix freezing problems.

I'm not near SIS right now. Nige, can you dig it up?
 
Cmark

Cmark

Senior Member
Joined
Jan 2, 2009
Messages
3,178
Location
Australia
Here we go. It's a service mag, not letter. SEPD0888.

Nige, can you make the pictures appear. I don't know how to.



Product: MULTI TERRAIN LOADER
Model: 287B MULTI TERRAIN LOADER ZSA
Configuration: 267B 277B 287B Multi Terrain Loader ZSA00001-UP (MACHINE) POWERED BY 3044C Engine

Service Magazine
2007/05/14 Media Number -SEPD0888-00 Publication Date -14/05/2007 Date Updated -14/05/2007


i02753237
Installation of New Crankcase Breather {1317**
SMCS - 1317

Multi Terrain Loader:

267B (S/N: CYC1-1482)

277B (S/N: MDH1-5379)

287B (S/N: ZSA1-4639)

Skid Steer Loader:

236B (S/N: HEN1-6749)

246B (S/N: PAT1-5522)

248B (S/N: SCL1-2044)

252B (S/N: SCP1-4599)

262B (S/N: PDT1-4910)

268B (S/N: LBA1-2089)

Service Magazine SEPD0861-00, 30 October 2006, "Installation of New Crankcase Breather". Disregard this article. See the replacement article that follows.
Description of Change: To prevent freezing, a new open breather has been introduced.

Adaptable To: The new open breather replaces the existing breather.


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NOTICE
Ensure that the hoses are routed correctly. If the hoses are routed incorrectly the hoses may wear or be damaged. Also ensure that all plugs are secure. Dirt and other debris can enter the engine causing engine failure.


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Illustration 1 g01238926


1.Disconnect the old breather hose (2) on the engine side from the fitting (1). Insert a 9B-7237 Bolt (4) into the end of the breather hose. Use the 5P-4961 Hose Clamp (3) to seal the breather hose.

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Illustration 2 g01238930


2.Attach a 5P-1442 Hose (2) to the fitting (4). Route the breather hose (2) toward the bottom of the engine. Use the 5P-4961 Hose Clamp (3) to seal the breather hose. Use zip ties to attach the new breather hose (2) and the old breather hose (1) together near the fitting (4). Also use zip ties to attach the new breather hose (2) to the fuel lines (5) toward the bottom of the engine near the flywheel housing.

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Illustration 3 g01238934


3.Disconnect the hose (3) from the pipe nipple. Insert a 7W-0917 Plug (1) into the end of the hose. Use the provided 9M-7958 Hose Clamp (2) to seal the air line.

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Illustration 4 g01238935


4.Attach 262-8088 Hose (4) to the pipe nipple (2). Use 9M-7958 Hose Clamp (3) to seal the hose. Insert a 7W-0917 Plug (5) into the other end of 262-8088 Hose (4). Also use a 9M-7958 Hose Clamp (3) to seal 262-8088 Hose (4). Use zip ties to tie the old hose (1) and the 262-8088 Hose (4) together.



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