| Author |
Message |
David Munson (Bbt) (63.61.94.154)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, January 28, 2001 - 6:52 pm: | |
I am working on my 1960 GMC 4104 with 671DD. When I bought the bus the fuel pump was not working, I bought a new one and was about to put it in when I noticed three holes in three sides of the pump. These holes are probably 5/16 and threaded, I did not disconect any thing from these holes in the old pump, can anybody tell me if they should be hooked to something,plugged or open? Thanks in advance; David Munson |
Ted Calvert (192.132.225.130)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, January 29, 2001 - 4:19 am: | |
I'll look at mine in the morning and let you know.
Ted Calvert. |
Ted Calvert (192.132.225.130)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, January 31, 2001 - 1:03 pm: | |
Sorry it took so long for me to get back on this. I had to work.
On mine, I have 3 tapped holes, appear to be 3/8-24 or 1/8 pipe thread and they are located between the pump itself and the mounting flange. I would assume they are to give access to setscrews in the coupling, where used.
Good luck!
Ted Calvert |
David Munson (Bbt) (63.61.94.4)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, January 31, 2001 - 10:40 pm: | |
Thank you for your help. I contacted detroit diesel today and they said that those are weep holes to prevent the mixture of fuel and oil if a diaphram in the pump gave out. |