MEP-8xx Fuel Return Line
Howdy,
The MEP-8xx series of generator all use diesel fuel return lines. After sometimes sitting with no fuel, or heat cold, no-use etc... they start to fail. The main issue is the lines start weeping fuel.
NSN 4720-01-483-6467 part N20353.5 HOSE, NONMETALLIC
The fuel return line is 3.5mm ID. But purchasing the correct 3.5mm ID fuel hose makes it stay tight on all the hose barbs without issue. Just be careful removing the old line from the TEE's. I use a new razor blade to cut slightly, not to deep to the TEE either.
I found the proper product. It is a 3.5mm fuel hose made by CRP CONTITECH. This is a roll which is 5 meters long which will give you enough to replace all your lines and have some in reserve. You can search for below. You could also search for VW, Mercedes Yellow Stripe fuel return line.
CRP N203535-5 CONTITECH Diesel Hose
Howdy,
The MEP-8xx series of generator all use diesel fuel return lines. After sometimes sitting with no fuel, or heat cold, no-use etc... they start to fail. The main issue is the lines start weeping fuel.
NSN 4720-01-483-6467 part N20353.5 HOSE, NONMETALLIC
| Name | Value |
| CROSS-SECTIONAL SHAPE STYLE | ROUND |
| INSIDE DIAMETER | 3.5 MILLIMETERS NOMINAL |
| LAYER COMPOSITION AND LOCATION | OUTER LAYER BRAIDED COTTON CORD |
| INSIDE SURFACE CONDITION | SMOOTH |
| SPECIAL FEATURES | COMES IN A 20 METER ROLL (66 FT.) |
| MATERIAL | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR TUBE |
| MEDIA FOR WHICH DESIGNED | FUEL/OIL, HYDROCARBON SINGLE RESPONSE AND WATER SINGLE RESPONSE AND AIR SINGLE RESPONSE |
The fuel return line is 3.5mm ID. But purchasing the correct 3.5mm ID fuel hose makes it stay tight on all the hose barbs without issue. Just be careful removing the old line from the TEE's. I use a new razor blade to cut slightly, not to deep to the TEE either.
I found the proper product. It is a 3.5mm fuel hose made by CRP CONTITECH. This is a roll which is 5 meters long which will give you enough to replace all your lines and have some in reserve. You can search for below. You could also search for VW, Mercedes Yellow Stripe fuel return line.
CRP N203535-5 CONTITECH Diesel Hose
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