Primelock remote fuel filter
installation
|
12 Valve PrimeLock Fuel Filter Adapter
1994-1996 Remote fuel filter mount installation
|
 |
Here is the problem - the OEM fuel filter location is way down under hoses,
brake lines, and wiring. After years of grumbling every time I had to change
the filter, I bought a PrimeLock remote filter mount at the 1997 TDR Rally
auction. The remote filter mount is a back saver for me! |
 |
 |
The PrimeLock kit moves the filter to the top of the engine for easy servicing.
The remote filter head incorporates a check valve to keep the fuel system
primed by preventing air from entering the fuel system when the filter is
removed. |
1994-1996 trucks use kit number PL9496, (NOTE: 1996 CA trucks equipped with
EGR need kit number PL96E)
Tools needed:
- Strap wrench
- 9/16" flare nut or combination wrench
- 7/16" wrench, 1/2" wrench
- =1/8" hex wrench
- Ratchet wrench with socket extension, 10mm socket
- Torque wrench
- Wire cutters, stripper, and crimp tool
Installation procedure: (=under construction)
|
=Loosen the boost hose clamp at the intake air horn (7/16" wrench) |
|
=Remove the Air Horn from the intake manifold (10mm wrench) |
|
Remove the fuel filter with a strap wrench. See Fuel
Filter Change for filter removal tips. |
 |
A filter adapter installs onto the engine's filter head and redirects
the fuel to the remote filter through hoses. It is much easier to attach
the fuel hoses to the adapter before the adapter is installed on the engine.
Clamp the adapter in a vise and install the hoses, using a good pipe joint
compound to seal the threads. |
 |
The filter adapter head is now ready to be screwed onto the OEM filter
mount. Leave the protective plastic covers on the hose ends to keep dirt
out of the fuel lines and tape the hoses together to keep them from flopping
around while you attach the adapter to the engine. Mark the inlet or outlet
hose (your choice) so that you can tell which hose goes to the filter head
inlet and outlet. |
 |
Make sure the old fuel filter's rubber washer is not on the filter mount
stud. Install the washer provided in the primelock kit onto the stud. Install
the o-ring in the adapter head groove. Screw the adapter onto the engine
in place of the fuel filter (keep the lines from twisting and binding as
the adapter is attached). Make sure the adapter is tight. |
| |
=Place the air horn back into position on the intake manifold to keep
dirt from falling into the manifold while you work. If the gasket is damaged,
replace it with Cummins PN 3913352. Attach the boost hose tighten the clamp
to 71 in-lb. |
 |
=Attach the L-Bracket to the the underside of the filter mounting plate.
(7/16" wrench, 1/8" allen wrench) |
| |
=Install the flare fittings into the remote head - use a good pipe joint
compound to seal the threads. (9/16" flare nut or open end wrench) |
| |
=Attach the remote filter head to the mounting plate. (1/2" wrench) |
|
=Connect the hose flare fittings to the adapter head. Make sure that the
inlet and outlet are connected properly! (9/16" flare nut or open end
wrench) |
| |
=Position the adapter assembly onto the intake horn. Place the the spacer
under the corner of the adapter mounting plate. Put a dab of thread sealer
on the intake horn bolt ends and install the bolts. Torque the bolts to
18 ft-lb. |
 |
Cut the WIF sensor wires and lengthen them using the wire and crimp splices
provided in the PrimeLock kit. |
| |
=Install the WIF sensor in the new fuel filter. Install the filter washer
on the mount stud. Fill the filter with clean fuel and and screw the filter
onto the mount. |
| |
=Plug the WIF sensor into the wiring harness and install the plastic wire
protector over the WIF wires. Push the fuel pump plunger about 100 times
to purge air from the fuel system. Start the engine and check for leaks.
If the engine stalls or does not fire, you may need to loosen the fuel line
fitting at the injector pump and push the fuel pump plunger to bleed air
from the system. Filter changes will be much easier now! |
CAUTION: I reinstalled the original WIF drain tube, but it would occasionally
catch on fender hardware and open the drain valve as the engine moved around.
After leaving a nine mile trail of fuel on the road when the tube got caught
on a heater grid relay one morning, I removed the tube!
Optional Fuel Filter Restriction gauge
Tools needed
- 7/16" wrench
- 9/64" Allen (hex) wrench
 |
Then optional pressure differential gauge gauge kit provides a quick way
to check the condition of the fuel filter. The line where green and red
meet indicates a "clogged" or dirty filter. Installation of the gauge onto
the filter head is a two minute job. |
 |
Use a 7/16" wrench to remove the two filter port plugs in the filter
head. |
 |
Install the two supplied 0-rings into the port recesses in the back of
the gauge. |
 |
Use the two hex head machine screws and lock washers to attach the restriction
gauge to the filter head. |
Last Update: February 13, 2002
