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Old 09-05-2009, 02:08 PM
morbius morbius is offline
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Join Date: Dec 2008
Location: California
Posts: 475

Default GDP Fuel Filter Installation

Hello Everyone,

Here is my installation of the GDP 2 micron diesel filter setup. I am VERY happy with this kit, its has the BEST purchased kit to date !! Everything was right, no modifications, no buying missing bits, nothing.

I wanted my installation to keep somewhat an OEM look, so I wrapped the hoses in the style wrap that Dodge/Cummins did. I doubled it (1/2 inch under 3/4 inch) so there is lots of protection from the vibration.

Here are the pics on a stock 6.7L engine:







Bracket installation, retained cummins cable holder:


Hose routing from stock filter to new unit:


Suggestions:

1. Assemble the bracket before installing onto engine. That way you do not have to deal with the EGR bypass tube. I used medium strength locktite on the mounting bolts. Diesel engines vibrate too much to trust lock washers to work over time. Use locktite only on the mounting bolts, NOT the fuel fittings !

2. You need to only remove the EGR plastic trim cover.

3. When you remove the plastic line from stock filter to the high pressure pump, diesel will spill out. When you remove the fittings from the high pressure pump, put a couple shop towel down around the fitting. It will drip till all the hoses are re-attached. Even though it has a check valve, that is alot of pressure on the rail and it will bleed out.

4. Pre-fill the filter before installing. Once installed and ready to go, bump the starter a couple times and that will take the most of the air out the line before actually starting the engine.

5. Have all the wrenches you need up front. It will take a combination of inch and metric. Space will be tight, but fully doable with standard designed wrenches.

6. Most important !! Take your time. You are installing steel parts into aluminum bodies. Over tightening WILL strip threads and cost you a fortune to replace/fix. When you remove the stock parts you will find that they are not very tight, remember that. You are dealing with low pressure fuel line, not the high pressure common rail.

7. Even though the hose and fittings are press fit, I opted for additional clamps. I just do have the time to screw with and fix things later. Extra 2 bucks now, save money long run.

WARNING: If you are thinking about installing an Airdog or similar style high volume pump, DON'T till you replace the line from the stock filter to pressure pump. When you remove the stock fittings on the pressure pump, you will see why ! No wonder these engines are prone to fuel starvation .... Will post pics later to show why.

Actually the GDP site had a pic showing what I mean (so snagged it ...):


Hope that helps, later I will do a separate water separator under the bed.

Cheers all,
Roberto
Attached Thumbnails
gdp-fuel-filter-installation-img_2484.jpg   gdp-fuel-filter-installation-img_2485.jpg   gdp-fuel-filter-installation-img_2487.jpg   gdp-fuel-filter-installation-img_2489.jpg   gdp-fuel-filter-installation-img_2492.jpg  
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'08 3500 HD Dually, SLT, 6.7L, 6 SPD Auto, 4.10 Axles, 4X4, Bighorn Edition
Installed: CAI, HitchCrafter Air 5th Wheel, Spyntec Dually Hubs, ATS Co-Pilot, Smarty, Edge Insight, 19.5 Wheels, FS-2500 ByPass Filter, 4 Fuel Filter Setup, BodyGuard Triple Side Steps


Last edited by morbius; 09-06-2009 at 12:18 AM..
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