Author	[Modern View]
Chuck McDonald 01-10-2013 08:39:16 66.243.220.1 Report to Moderator	I am replacing the fuel pressure gauge on my F400 injection pump. Here is a pic of the remains of the fitting that the original gauge was screwed into. Part of it did break off in the fuel line housing at the time of removal. Is this type critical, or would a regular brass fitting work for this application? Thanks Chuck [Reply]   [No Email]
pete 23 01-10-2013 16:40:58 74.32.229.189 Report to Moderator	Re: IH F400 Diesel Fuel oil pressure gauge ? in reply to Chuck McDonald, 01-10-2013 08:39:16   Just put in a new gauge with out adaptor. If it reads steady you are in bussiness. If it jumps all over the place, get a hold of a brass fitting, solder end full of solder, drill a small orfice and try that. Some applications use two orfices in series to dampen pressure spikes. That is what they do in the compensator on the closed center hydraulics used in the 86 series tractors. [Reply]  [No Email]
Phil Tibbetts 01-10-2013 15:17:05 208.93.14.38 Report to Moderator	Re: IH F400 Diesel Fuel oil pressure gauge ? in reply to Chuck McDonald, 01-10-2013 08:39:16   There may have been a small orifice hole in that piece to prevent shock to the gauge. Just a possibility, not uncommon. [Reply]  [No Email]
rustred 01-10-2013 16:16:57 209.115.232.65 Report to Moderator	Re: IH F400 Diesel Fuel oil pressure gauge ? in reply to Phil Tibbetts, 01-10-2013 15:17:05   the guage has the orfice hole. [Reply]  [No Email]
rustred 01-10-2013 11:02:05 209.115.232.65 Report to Moderator	Re: IH F400 Diesel Fuel oil pressure gauge ? in reply to Chuck McDonald, 01-10-2013 08:39:16   you took it off at the wrong place. that brass fitting stays in pump and does not go with guage. i am not sure on the brass fitting , as never removed one to know whats behind it.can you remove the housing to remove the broken piece if it is indeed broken as i think just screw that one back in and try it to see if you get pressure on the guage. [Reply]  [No Email]
Chuck McDonald 01-10-2013 14:17:23 66.243.220.1 Report to Moderator	Re: IH F400 Diesel Fuel oil pressure gauge ? in reply to rustred, 01-10-2013 11:02:05   It might not be visible in the pics, but the threads sheared half off and came out in pieces. It was leaking and I attempted to tighten it.....bad idea. Looked to me like it had be cracked and I finished it off. So do I have to have that? Chuck [Reply]  [No Email]
rustred 01-10-2013 14:26:54 209.115.232.65 Report to Moderator	Re: IH F400 Diesel Fuel oil pressure gauge ? in reply to Chuck McDonald, 01-10-2013 14:17:23   i see. i kind of think dont need the exact fitting. should be able to put a 1/4 npt hyd. fitting like that but just make sure the male part of brass fitting is indeed 1/4 npt. after studying that brass fitting i think that is just a built in valve so that when the guage is removed it dont drain the system and allow air in. my thoughts though. [Reply]  [No Email]
Chuck McDonald 01-10-2013 14:19:57 66.243.220.1 Report to Moderator	Re: IH F400 Diesel Fuel oil pressure gauge ? in reply to Chuck McDonald, 01-10-2013 14:17:23   Might attempt to clean up the remaining threads, put a very small amount of thread tape on it and try to put it back on the pump. Chuck [Reply]  [No Email]
Chuck McDonald 01-10-2013 14:21:20 66.243.220.1 Report to Moderator	Re: IH F400 Diesel Fuel oil pressure gauge ? in reply to Chuck McDonald, 01-10-2013 14:19:57   FYI, I know that it didn't have to be removed, but it came off in my hand that way.........Would have preferred to just replace the gauge...... [Reply]  [No Email]