Water pump hole
Moderators: rickf, raymond, Mr. Recovery
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- Staff Sergeant
- Posts: 123
- Joined: February 5th, 2014, 8:56 am
- Location: Brisbane Australia
Water pump hole
HI all. My A2 water pump died so I replaced it, piece of cake , easy job. However when I refilled the radiator, water poured out from under the gasket near the fourth hole in the casting near the left hand bolt. I replaced the gasket and refilled again with the same result. All surfaces were clean and gasket goo (don't know what you call it) applied , bolts done up firmly, leak was in same place. Gasket replaced for a third time and water doesn't leak out. what I'm wondering is , what is the other hole in the pump casing for because that's where the leaks were. It's about an inch from the 9 o'clock bolt, on the inside only with a matching hole in the block into the water jacket. My guess is it's a pressure relief duct but I've never seen one before and have replaced many water pumps .If it leaks again can I permanently plug this hole without damaging something ? Thanks.
Re: Water pump hole
The pump is not interfering with one of the timing cover bolts is it? This is very common on replacement pumps and all you need to do is grind a little clearance in the pump body where it is hitting the bolt head. I do not know of any extra holes in the pump other that the weep hole at the fan shaft.
I just went out and looked at one of my spare engines and I only have three holes in the pump to the block. No room for anything else so if you have something else would need to see a pic of it.
I just went out and looked at one of my spare engines and I only have three holes in the pump to the block. No room for anything else so if you have something else would need to see a pic of it.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone
Re: Water pump hole
Per Ricks statement on grinding, link to threads/photo to show example. Also talk of impeller interference.
http://g838.org/viewtopic.php?f=3&t=455 ... und#p37051
http://g838.org/viewtopic.php?f=3&t=455 ... und#p37051
1960 M151 Run #1
"There is one nut on a M151 that is very difficult to remove....." - K8icu
"She ain't a Cadillac and she ain't a Rolls, But there ain't nothin' wrong with the radio" - Aaron Tippin
"There is one nut on a M151 that is very difficult to remove....." - K8icu
"She ain't a Cadillac and she ain't a Rolls, But there ain't nothin' wrong with the radio" - Aaron Tippin
Re: Water pump hole
I am going to make you our official archivist! There is nothing you can't find and quickly!!
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone
Re: Water pump hole
Nothing to it. Just following directions.
Search for keywords:
Place + in front of a word which must be found and - in front of a word which must not be found. Put a list of words separated by | into brackets if only one of the words must be found. Use * as a wildcard for partial matches.
1960 M151 Run #1
"There is one nut on a M151 that is very difficult to remove....." - K8icu
"She ain't a Cadillac and she ain't a Rolls, But there ain't nothin' wrong with the radio" - Aaron Tippin
"There is one nut on a M151 that is very difficult to remove....." - K8icu
"She ain't a Cadillac and she ain't a Rolls, But there ain't nothin' wrong with the radio" - Aaron Tippin
-
- Staff Sergeant
- Posts: 123
- Joined: February 5th, 2014, 8:56 am
- Location: Brisbane Australia
Re: Water pump hole
It appears we have found the problem. One of the bolt holes had a short bolt in it and about half of the threads in the block were so gunked up with rust scale etc. that when I tightened that one up it got tight when it still had a few turns to go, so that part of the pump housing was able to leak. I've never come across that before. Thanks for your help men.
-
- Staff Sergeant
- Posts: 123
- Joined: February 5th, 2014, 8:56 am
- Location: Brisbane Australia
Re: Water pump hole
I forgot to say , as you probably guessed, the thread was cleaned out with a thread cutting die, like new.
Re: Water pump hole
That is why it is always a good idea to blow out and run a tap into all bolt holes, especially in older engines.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone
Re: Water pump hole
So, bolt holes are like a box of chocolates?rickf wrote:That is why it is always a good idea to blow out and run a tap into all bolt holes, especially in older engines.
Re: Water pump hole
A little early to be PUI. (Posting Under the Influence)
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone