Fuelab 51504 Fuel Pressure Regulator Manual de usuario descargar pdf (Pagina 3)

Install with Cup

toward Regulator

-906 O-ring

Example -6AN to

-8AN Reducer

Fitting Shown

(Not Supplied)

Example -6AN to

-8AN Reducer

Fitting Shown

(Not Supplied)

-906 O-ring

Example -6AN to

-8AN Reducer

Fitting Shown

(Not Supplied)

-906 O-ring Shown

Prior to Fitting

installation

Gauge Port Plug

(can be substitued

for gauge fitting)

-6AN Return Line Port

-6AN Inlet-Outlet

Port (on each side)

1/8"-NPT Gauge Port

Front

(Logo)

Adjustment

Screw

Jam Nut

Flat Washer

(3X) Bracket Screw

(3X) Bracket Lock Washer

(1/8") Barbed Fitting

(See Note 7, Above)

1/8"-NPT Pressure

Reference Port

(Pressurized

Carburetor Only)

Unique Serial

Number

Identification

105020124-1, No Rev Page 3 of 4

3. Use the supplied bracket as a drilling template to mark holes for mounting bracket. Choose a location that

minimizes exposure to excessive heat, near carburetor(s). Mounting bracket can be modified as required. Use

clear or colored enamel paint to protect bracket surface after any modification.

4. Apply light oil onto the threads of the Adjustment Screw. Small amounts of air leakage in the adjustment

hardware may be present during operation. This is a normal operating condition. Thread the Adjustment

Screw by hand until a slight tension is felt, this position is the minimum pressure setting. Do not tighten screw

any further. Pressure is to be adjusted later in these instructions. Install the Flat Washer, then the Jam Nut.

Tighten the Jam Nut hand tight for later adjustment.

5. Install Bracket to regulator using supplied Bracket Screws and Bracket Lock Washers. Tighten Bracket Screws

between 25-40 in·oz of torque (snug, do not over tighten screws).

6. Install the fuel fittings (not supplied). The threads used on these Fuel Ports are not tapered or pipe threads.

Do not use Teflon

thread tape or thread sealant on these threads, as this can cause leakage or introduce

debris into the fuel system. Fittings to be used with these style of ports require use of the enclosed –906

O-rings for proper sealing (reference diagrams, below). Use light oil to lubricate the O-rings just prior to

installation. Install the O-rings onto the fuel fitting first. Position the O-ring in the thread relief of the fitting as

shown in the diagram, below. Thread fitting into regulator and tighten between 5 and 15 ft·lbs of torque.

7. Use Teflon

tape or thread sealant on all 1/8”-NPT fittings to be used for the Gauge Port and Pressure

Reference Port (see diagrams, below). Install fittings or plug as required. If pressure reference port is not

plumbed to the induction tube (for pressurized carbureted system only) then install the Barbed Fitting (supplied)

and allow fitting to vent to atmosphere (do not plumb or plug port).

8. Install regulator assembly into vehicle, fastening the bracket to the vehicle. Attach fuel lines, Gauge Port line (if

external pressure gauge is used in application) and Pressure Reference Port line (if applicable). Boosted

applications (such as turbo or supercharger) will require a hose clamp on barbed fitting to prevent hose from

coming loose. Use of –3AN or –4AN line can also be used as a substitute to the barbed fitting.

9. Inspect fuel system for any contact of fuel lines or wires with other components that can cause chafing or

rubbing. Secure all components and fuel lines.

10. Connect the vehicle’s battery. Turn on fuel pump (typically by bypassing fuel pump relay) without engine

operating. The pump will have to operate several seconds (30+) to prime and drive air out of the fuel system.

Fuel system pressure should read about 4 to 5 PSIG (use an external gauge for adjustment if a permanent

gauge is not used). If the pressure is higher than desired pressure, re-inspect the return line for restrictions.

Inspect vehicle for any leaks. Turn off fuel system and repair any leaks that may be present before continuing.

11. When adjusting pressure, be sure that fuel pump is operating to monitor pressure. Increase pressure by

rotating adjustment clockwise. Do not thread Adjustment Screw past jam nut within 1/8”. Over tightening the

adjustment screw can damage the regulator.

12. After final adjustment of fuel pressure, tighten Jam Nut. Road test vehicle, and retest pressure upon return to

ensure accurate adjustment.