| Author | Message | ||
     Edward Mckinley New User Username: ed_mckinley Post Number: 45 Registered: 10-2019 |
Has anyone been able to find a cross reference parts list for the Bosch fuel injection systems? I am looking for Rolls part number UE70437 which is just a valve with a hose attached. The Bosch part number is molded onto the part but half of it is worn off. It's not the first time I've needed a part and wanted to find availability from other manufacturers who may still have stock | ||
| Edward Mckinley New User Username: ed_mckinley Post Number: 46 Registered: 10-2019 |
 | ||
| David Gore Moderator Username: david_gore Post Number: 4122 Registered: 04-2003 |
Edward, If you cannot find an original item, an industrial hose specialist should be able to custom make an equivalent copy for you using standard hydraulic system components. There should be a hydraulic hose specialist near you.  | ||
| michael vass Frequent User Username: mikebentleyturbo2 Post Number: 768 Registered: 07-2015 |
I would like to know the purpose of that valve. | ||
| Robert J. Sprauer Frequent User Username: wraithman Post Number: 806 Registered: 11-2017 |
It's a pressure control valve. It can be tested for operation. The control valve is often used on Bosch injection systems from the era, including Ferrari, Porsche, Delorean, etc. | ||
| Edward Mckinley New User Username: ed_mckinley Post Number: 47 Registered: 10-2019 |
I've attached a picture of the part number molded onto it. to me it looks like 02801503_0 If the obscured number is 0 that would make it a frequency valve although I have not found one for sale  | ||
| Edward Mckinley New User Username: ed_mckinley Post Number: 48 Registered: 10-2019 |
FYI the problem is that the compression fitting on the valve side is dripping due to pitting of the mating surfaces | ||
| Robert J. Sprauer Frequent User Username: wraithman Post Number: 807 Registered: 11-2017 |
Try a single wrap of teflon tape on the male side. Nothing to lose. I have seen this done before with success. | ||
| Edward Mckinley New User Username: ed_mckinley Post Number: 49 Registered: 10-2019 |
worth a try | ||
| Edward Mckinley New User Username: ed_mckinley Post Number: 50 Registered: 10-2019 |
Teflon tape didn't work. As I thought the tape prevents the fitting threading far enough into the receiving part to seal the rear part of the fitting | ||
| Brian Vogel Grand Master Username: guyslp Post Number: 3314 Registered: 06-2009 |
Try several wraps of teflon tape (preferably the type for gas [as in natural gas] - which is pink - but any will do) and keep it away from the threads that are the leading edge of the connection. Teflon tape, even several wraps (like 3 or 4 at most - depending on how thick what you have is) should not prevent any threaded connection from threading in just as it would if you didn't have any in use. If it does, you've got too much. Brian | ||
| Jim Walters Frequent User Username: jim_walters Post Number: 370 Registered: 01-2014 |
Do you know a machinist? I would chuck it in my lathe and skim off a bit of the mating surface of the fitting if minor pitting is the only issue with it. If you don't know one you could also clean both mating surfaces well and put it together with a little bit of Loctite 262 or 638 on the mating surfaces, leaving it to harden before exposing it to fuel. Sometimes you have to think outside the box if you cannot find a replacement part. SRH8505 SRC18015 SRE22493 NAC-05370 www.bristolmotors.com | ||
| michael vass Frequent User Username: mikebentleyturbo2 Post Number: 769 Registered: 07-2015 |
Hi Robert I'm sure that is not the pressure control valve, the pressure control valve is the part with the rubber pipe sticking up into the air! | ||
| michael vass Frequent User Username: mikebentleyturbo2 Post Number: 770 Registered: 07-2015 |
Hi Edward Is this it? https://www.ebay.com/itm/324451047771 Mike | ||
| Robert J. Sprauer Frequent User Username: wraithman Post Number: 808 Registered: 11-2017 |
The valve pictured, trims the mixture with the help of the O2 sensor. hence, the valve is either open or its closed at any given second. The frequency of these on-off pulses (the buzzing you hear and vibrating you feel) is the valve's duty cycle, which controls the fuel distributor's internal diaphragm's lower chamber pressure. A higher duty cycle results in reduced lower chamber pressure, thus returning more fuel to the fuel tank and sending more fuel to the injectors (i.e. the higher the duty cycle, the more the valve is open, the richer the mixture). A lower duty cycle results in increased lower chamber pressure, thus returning less fuel to the fuel tank and sending less fuel to the injectors (i.e. the lower the duty cycle, the more the valve is closed, the leaner the mixture). | ||
| michael vass Frequent User Username: mikebentleyturbo2 Post Number: 771 Registered: 07-2015 |
Hi Robert Thanks for the explanation, I don't have O2 sensors but I do have an eha , is that what controls it? Thanks Mike | ||
| Robert J. Sprauer Frequent User Username: wraithman Post Number: 809 Registered: 11-2017 |
All sensors report to the ECU if so equipped and the ECU does it's job based on the data received. I have a 1981 Silver Wraith II, one of only 53 with Bosch injection that was introduced for the 1980 model year and I have one of these. | ||
| Edward Mckinley Experienced User Username: ed_mckinley Post Number: 51 Registered: 10-2019 |
Flying Spares had an original part available so I ordered and should be here in a week. Thanks for everyone's help as always | ||
| Brian Vogel Grand Master Username: guyslp Post Number: 3315 Registered: 06-2009 |
Edward, When you receive it, would you please photograph it and post those images? This sort of documentation is invaluable. Brian | ||
| Edward Mckinley Experienced User Username: ed_mckinley Post Number: 52 Registered: 10-2019 |
UE70437 just arrived from Flying Spares. The new part is the lower in the picture along with UE70443 which is the plumbing fitting that connects to the pulsation damper.  | ||
| michael vass Frequent User Username: mikebentleyturbo2 Post Number: 772 Registered: 07-2015 |
So what Bosch number is on the new one? Mike | ||
| Brian Vogel Grand Master Username: guyslp Post Number: 3316 Registered: 06-2009 |
Michael Vass wrote: So what Bosch number is on the new one? Thanks for asking. That's really what I was looking for. Brian | ||
| Edward Mckinley Experienced User Username: ed_mckinley Post Number: 53 Registered: 10-2019 |
The Bosch number is the same as the original, 0280150300. It did the trick, running like a champ and no leaks | ||
| michael vass Frequent User Username: mikebentleyturbo2 Post Number: 773 Registered: 07-2015 |
So that is the same as the one on eBay? Is the pie detachable? Mike | ||
| Edward Mckinley Experienced User Username: ed_mckinley Post Number: 54 Registered: 10-2019 |
The valve must be the same but the hose and fitting attached to it do not look like they are detachable (without breaking it). I will investigate further on the original part | ||
| Edward Mckinley Experienced User Username: ed_mckinley Post Number: 55 Registered: 10-2019 |
So I've removed the rubber covering to expose the plastic tubing. I'm not sure what type of connection this is using but it looks like the valve may have a slightly barbed fitting and/or perhaps heat or a crimping tool was used to seal?  | ||
| Jim Walters Frequent User Username: jim_walters Post Number: 371 Registered: 01-2014 |
Edward, if you're not going to keep the old one and are just going to throw it away how about mailing it to me instead? I can reface the sealing surface and it may be usable in the future. The plastic tubing is warmed up and pushed onto the barbed ends of the fittings. SRH8505 SRC18015 SRE22493 NAC-05370 www.bristolmotors.com | ||
| Edward Mckinley Experienced User Username: ed_mckinley Post Number: 56 Registered: 10-2019 |
sure no problem, send me your address | ||
| michael vass Frequent User Username: mikebentleyturbo2 Post Number: 774 Registered: 07-2015 |
So I say it's the same valve with a bit of pipe on it, only return so no pressure, I'm sure a hose clip would work with some fuel hose. Thanks for the information 🙂 Mike | ||
| michael vass Frequent User Username: mikebentleyturbo2 Post Number: 775 Registered: 07-2015 |
More info http://forums.pelicanparts.com/9669578-post1.html |
