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Cat 289c leak by injection pump

bwbigred

Active Member
Joined
Dec 5, 2012
Messages
30
Location
nj
I have a cat 289c and I have a leak on the side of the injection pump. There is a small hose that goes to a cylindrical looking piece with a spring it almost smells like anti freeze any suggestions
 

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thepumpguysc

Senior Member
Joined
Mar 18, 2010
Messages
7,445
Location
Sunny South Carolina
Occupation
Master Inj.Pump rebuilder
Yes, it will smell like antifreeze, that’s what activates it.. it’s a cold start device..& works off the engine coolant..
There’s not a whole lot u can do w the pump on the engine.. just not enough room..
 

bwbigred

Active Member
Joined
Dec 5, 2012
Messages
30
Location
nj
Can I replace that piece it looks like it bolts on. It’s dripping pretty good while running and I can’t have that
 

Simon C

Senior Member
Joined
Jul 1, 2015
Messages
663
Location
Rocky Mountain House , AB., Canada
Occupation
Heavy Equipment Mechanic
Can I replace that piece it looks like it bolts on. It’s dripping pretty good while running and I can’t have that
I think the Pump Guy SC is trying to say the injection pump has to come off to repair. Thats what it sounds like. They are heavily jammed into these units. Need to clean lots of dirt first before attacking any fuel injection pump or around any engine or hydraulic system. Simon
 

thepumpguysc

Senior Member
Joined
Mar 18, 2010
Messages
7,445
Location
Sunny South Carolina
Occupation
Master Inj.Pump rebuilder
U can try.. BUT
U HAVE TO GET THE PUMP # off the side of the aluminum hsg inorder to get the right 1.
Get the # FIRST..(before taking it off)
Call your local pump shop, tellm u need the CSD ( cold start device)
You’ll probably have to wait for delivery.
 

thepumpguysc

Senior Member
Joined
Mar 18, 2010
Messages
7,445
Location
Sunny South Carolina
Occupation
Master Inj.Pump rebuilder
It either advances or retards the timing.. I don’t have the specs in front of me..
It’s only used for starting.. & reduces the smoke..(epa)
 

thepumpguysc

Senior Member
Joined
Mar 18, 2010
Messages
7,445
Location
Sunny South Carolina
Occupation
Master Inj.Pump rebuilder
U r correct.. it’ll b up to u to find out if it’s leaking at the large pump oring or the shaft that sticks out..
If it’s the shaft, an oring probably won’t fix it.. it probably wore out the housing it rides in..
Therefore u need to replace the assembly..
Here’s to hoping it’s the big oring at the housing..
 

Tyler d4c

Senior Member
Joined
Mar 2, 2016
Messages
1,750
Location
Salix Pa
Pump number is 104742-3100
Cold start device part number is 146361-6500
0ring is 146600-0800
Thepumpguysc can you verify the part numbers and order them?
 

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thepumpguysc

Senior Member
Joined
Mar 18, 2010
Messages
7,445
Location
Sunny South Carolina
Occupation
Master Inj.Pump rebuilder
Big Red/Tyler.. my supplier has them in-stock..
Naturally you'll need a price but we should take it off the forum for that..
Click on my screen name on the LEFT side of the page for contact info..
 
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