coolant leak behind waterpump, seemingly ?

[panheadric]

it seems that I have coolant dripping from the backside of the front pulley but only after driving it for awhile. I left it idling in front of my shop for about 30 minutes ,no leak. drove into town & it leaks for awhile ( about a cup full) when I got back.
any answers ?
also where do I buy water pump to block gaskets ( was thinking that might be that ) & how full do you fill the radiator , bottom of cap,bottom of fill tube or to where?
thanks, ric

 

[panheadric]

any answers ??

 

[hoop]

Each truck maintains a different level. It will push out what it does not want. Make sure you check the hose's.
Bad water pump or gasket.........Not likely, but could happen.

 

[Wildchild467]

If its leaking just behind the water pump pulley and not the housing, you are looking at buying a new water pump. Make sure the engine is good and clean so you can see a drip if one starts.

I suggest tightening your hose clamps first to make sure they are tight. Start off with the simple things and try not to over think the problem just yet.

 

[m-35tom]

there is no water pump to block as i recall. you just need a new pump. if it comes out behind the pulley and in front of the pump, that is the shaft seal, just like any water pump.

tom

 

[Heavysteven]

I say overkill fix it. Pull the radiator, replace all the hoses, all the belts, and the thermostat. That's what I did on my truck.

 

[panheadric]

I'll look closer & check the hose's . I just thought it was strange to not leak all the time the motor ran. the leak is driping steady when it leaks from behind the bottom pulley/ balancer & the block.
thanks for all the help & idea's,
ric

 

[onegmjack]

Not as much pressure just idling as driving down road.Water pump seals are funny some times.
Don't see a lot of water pump problem on the Deuce,not since I have been on the site.

 

[zout]

Just to add to the post of M-35Tom - the leak is most likely from the water pump shaft seals. That is the reason the water pump has what is called a "weep hole" so any leaking fluid can escape the pump and not stay maintained internally in the pump (which would build pressure making you think you had a headgasket failure).

Water pump shaft seals can leak only when coolant is cold - they can also leak when the coolant just gets hot !!! or just plain leak when they want to hot or cold.

Grab the ole TM's and proceed with a water pump replacement.

 

[panheadric]

I finally got around to putting a new NOS water pump (bought from a big military truck supplier) & it started leaking out of the weep hole also just not as bad , right after start up . does anybody rebuild these in oregon /washington area. I'm sure it just needs a new seal .

 

[panheadric]

any answers ? I really hate to buy another brand new NOS water pump ,put it on & have it leak again ,bad enough I paid for the new one that leaks.

 

[onegmjack]

Have you contacted the place you bought the pump?I would call them and tell them the pump was bad,they should stand behind it.

 

[davykeith]

Any solutions? I have the same issue. Appears to be leaking around water pump. I have yet to be able to view the check valve as it's hard to see / access. I'm thinking replace pump and shaft seal?

 

[frank8003]

Some would put UV dye into the coolant for finding leaks.
Leaks will glow under fluorescent black light, stuff is about 7 bucks.
Leak will show as a glow under UV light, like your blacklight
or a new LED UV flashlight is 9 bucks at Wally World.