HRC-Nissan-S13,-S14,S15-Fitting-Guide-3

HRC Nissan S13, S14 & S15 Fitting Guide

Fitting a HRC GSS 341/342 fuel pump to Nissan SX 200,S13, S15

(You can reuse the existing filter if you prefer it to the new supplied)

HRC GS-341 or 342 (also known as a 255 due to it being capably of pumping 255 litres of fuel per hour). This guide shows how to fit one of these.
You will need a blunt flathead and crosshead screwdriver, a mallet, pliers, a pair of wire crimps and a couple of old cloths. It is advisable to a few pairs of rubber gloves too, unless you enjoy the smell of petrol on your hands.
It is best to do this job when you have less than a quarter of a tank left.
Firstly: open all doors and the boot to get as much ventilation as possible. Next, start the engine and pull the fuel pump fuse. Its the third down on the right in the footwell fusebox (15 amp). The engine will stop fairly quickly. The reason for this is to clear the fuel line and release pressure. If you don’t, petrol will spill everywhere when you disconnect the hoses.
DISCONNECT THE BATTERY. Next, disconnect the battery if you just ignored that! One stray spark from a live electrical connection and you won’t be around to worry about not doing it.

Drop the rear seat back. You will see a gray cover over the bulkhead. Remove the two black lugs holding it in place and fold it back into the boot. You will now clearly see the plate covering the fuel tank

Use a crosshead screwdriver to undo the four retaining bolts. They are quite easy to undo. Lifting the plate, you will see that the cables feeding through it are connected. Unclip these connectors and swivel the plate back out of the way. The connectors are two and three pin, so they will only re-connect correctly.

(Not S15)
Use a crosshead screwdriver to undo the four retaining bolts. They are quite easy to undo. Lifting the plate, you will see that the cables feeding through it are connected. Unclip these connectors and swivel the plate back out of the way. The connectors are two and three pin, so they will only re-connect correctly.


(for S15 only)
mark up all three fuel hoses to identify them easily when reconnecting later. Undo the screws on the two left hose grips and move them back along the hoses. Use pliers to pinch the right grip back.As can be seen, they are considerably simpler to remove and replace. Be warned, however. Fuel is much more likely to spill when you remove them. Ensure you have adequate means to catch this spill.

Carefully remove the hoses from their connections. Make sure you have a cloth under each one, as there will still be some excess petrol in the hoses, especially the left ones. Move the hoses back out of the way to allow unrestricted access to the fuel tank lid.

There is a screwable black cap holding the white centre lid in place. This cap will be very tight and will probably need removing (and replacing) by tapping a blunt flathead screwdriver on the ridges. Don’t tap too hard or the ridges will be damaged.Wear rubber gloves. The white lid will pull out from the tank. You will see two fuel pump connections attached to the cap (Figure 5). Disconnect them and place the cap somewhere were it won’t get dirty. Disconnect the fuel hose from the cap.

 

It is quite difficult to explain how the pump holder is mounted in the tank. You can see in Figure 6 that the holder slides over a clip attached the diagonal front edge of the fuel tank (behind the rear seats).

Have another cloth ready here. From the boot side of the tank lid, put your hand into the tank, grip the holder and carefully lift it up and towards you. As you remove the holder and pump from the tank, you will see the filter attached to the bottom of the pump. Place the cloth under the filter to avoid dripping petrol everywhere.

Lie the pump in a relatively clean work area and take a look at it. The pump itself isn’t actually fixed on by anything except the small length of hose on the left. Using pliers, release the pinch grips on the hose. The pump should pull out of the hose. It can then be twisted out of it mount on the right.

The Filter supplied with your HRC kit is high quality, however you may prefer to either transfer your existing filter or get a 300ZX item. If transferring, Turn the pump with the filter pointing up. Be prepared for petrol to come out! Carefully remove the tiny circlip holding the plastic adapter on and take it off. – Note the HRC filter is of better quality and construction than other well known suppliers so its your choice to use the existing or new.

Turn the pump over. You will see the electrical connectors. The connectors are not required for the HRC so cut both wires, leaving about 15cm of wire on the old unit. his is in case you need to refit or sell it.

This photo shows a comparison of the S15 fuel pump with the HRC. As can be seen, they are VERY similar, right down to the electrical connector. There is no need to
alter the existing wiring at all. The existing connector will simply plug into the HRC

Not used but remember the rubber boot that fits over the fuel pump this will secure the pump from rattling in the hanger.
Unpack your HRC Pump! Attach your filter onto the bottom and secure with the old circlip. Make a note of how the new rubber

Not used but remember the rubber boot that fits over the fuel pump this will secure the pump from rattling in the hanger.
Unpack your HRC Pump! Attach your filter onto the bottom and secure with the old circlip. Make a note of how the new rubber

Cut the piece of hose supplied with the fitting kit down by about 3cm. Attach the new hose to the holder and pump and seat the pump and washer in the holder end. The hose needs to only be sufficiently long enough to ensure that the pump and rubber washer sit snugly and firmly in the end of the holder.

Using wire crimps, splice the new connector wires to the old using the two crimps supplied. If you are in any doubt, its red to red and white to black. It is not sufficient to twist the wires together and stick some insulating tape on. In the petrol vapour of the tank. The tape will come off in no time, the wires will spark and you’ll suddenly have a terminal amount of boost. The wires should not be exposed at all. So if you decide to solder them, you must shrink wrap them too. Once done, plug the new connector into the HRC.
(for S15 only)

Due to the fuel pump holder being made to hold a pump the same size as a HRC,. In reality this is quite fiddly. You may have to adjust the pipe length, you may not. Try the fitting before altering anything. One other important thing to note was that the rubber boot supplied with the HRC should fit the pump holder, however a lot of Nissan owners prefer to use the original. Note the boot not shown on photo but is obvious in the kit.

If you do not fit boot … – As an added precaution, some owners like to zip tie a length of rubber hose around the lower half of the pump and holder. this to ensure that the holder doesn’t rattle against the side of the tank when refitted. This isn’t essential, but guards against any nuisance rattling. (The boot supplied should sort this however.)

The pump and holder can now be carefully slid back into the fuel tank and back onto its bracket. ensure that it is held firmly.

Reattach the pump’s electrical connectors and fuel hose to the white lid. Tuck the wires back into the upper end of the tank and replace the lid in the same way it came off (see Figure 4).
Screw the black cap back into place. Reattach the fuel hose and secure the grips. Reattach the connectors.

Slide the top plate back into position and screw the bolts back. Secure the cloth cover into place and put the rear seat back up.

Put the fuel pump fuse back in. Reconnect the battery.

Start the engine and let it tick over for a while to ensure everything is back to normal, then go and enjoy your new fuelling!

Download as a pdf