Why does this pump have a small inlet hole,not like the bigger hole in the pump that came off the truck?
2021919
This water pump has 4 in and out points: Via the small stem pipe and via the connection on the right in the photo and then into and out of the engine block not shown in photo. It should be an exact fit for your truck if it is the correct model. You may be confused when looking at your vehicle because it is easy to realize that the thermostat sits in a separate housing bolted to this pump. That housing is not included with the pump and is a separate part as is the thermostat (which I advise to be replaced with a new one if changing out the water pump.). Hope this helps some. Usually you can just unbolt the old thermostat housing, purchase a new gasket and bolt it with a new thermostat installed to the new water pump assembly shown.
2021920
This pump fits a similar model that does not have a heavy duty cooling system
2021921
Ok. Did you notice the small note that says: You must also order ACDelco 15-11057 Water Pump Inlet?Now they also say bolts to, but I wound up using my old bolts.Does this solve the issue? If not, please me us know the year, model and engine you have. My 2003 suburban uses this pump and has a heavy duty cooling system.
1545733
On the pump I had to take the old and new pump apart at the impeller housing to make it work. I had to use the old impeller housing on the new pump. I tried swapping the mounting bracket on the pump but bolt holes did not line up.Vern
1670840
The original pump was oil filled and required a gasket. The new pump is a sealed unit and does not need a gasket between motor and pump. Just bolt it on and have at it !
2011850
On the left side of the tank at the bottom there is a small drain plug that is probably like 5/8" or 3/4", but it is facing the side of the truck, so it wouldn't be very accessible.
1415980
The adapter that's on the second picture of this pump is the one to use. The side nipple is (i think) for pumping air into the tube which increases the max water head(height). If your not using it either seal the hole with some silicone glue or attach a small tube and tie/pinch the other end. I dont remember all the attachments but what I remember I had to silicone glue some parts together to get the right tube diameter for my needs.
1769359
I believe it relates to the the air nozzle. One is used more by commercial vehicles. You might want to call the company before you order.
863774
The lower port on the carb should pull fuel from the fuel filter in the tank. The upper one is part of the purge pump that returns fuel to the tank.
110494
The tiny hole in the flange with the air bleed valve should be mounted top dead center when positioned on the water pump--or at least on an OME thermostat for a Toyota Tacoma--maybe some 'stats don't have an air bleed hole?
1757201
No, it's not. The intake hose is much smaller/narrower than the discharge hose.
2135958
the pic is just for reference, you will actually have another bend and a long filter, works great, even my wife said how come the truck sounds different, lol, that is because it is sucking large volumes of air.
1835092
Sorry Harold, we used the hole already drilled for the original pump. That hole measures 1 inch.
1901218
I got this pump for my 1985 40 hp johonson, but the fuel nipple to the carburators was way to small. It is possible to change the nipple. Best regards Kristian Rygh
1233979
I would advise adding this hole near the outlet to prevent an air lock condition in the event the pump continue to run when water has dropped below the impeller. You may notice the pump already has a small hole at its base but it is still possible to have excess air build up whereby prevent water from getting pumped because the air was not able to be purged. I did this experiment myself when I asked myself the same question are are asking and concluded adding the extra hole as instructed was a good idea. I added the hole just above the threaded fitting on the PCV pipe and the pump work great. You may notice a small amount of water shoot out the hole when the water has reached its lowered point in the pump cycle but that is normal.
1859712
Don't remember exactly but I believe the inlet doesn't line up with the new design water pump so u do have to replace it going to waste time if u don't get the inlet with it I called around to the dealer and a friend who owns his auto shop and he verified that u need both the water pump and the inlet the old one won't work with this water pump
706552
The pump does not restrict water going through it. So if you have pressure on the inlet side of the pump, the water will still flow through it.
719530
With the motor on top, and the pump at the bottom, the inlet should be on the left hand side. Outlet should be on the right.There are small arrows cast into the plastic diaghram housing of the pump.
1961417
Take the cover off the intake side of the pump. That is where the water flows into the pump and then gets pushed out through the outlet connector.