Mechanical contain a filter to prevent grit being passed to the . The filter should be cleaned at major service intervals every 10,000 or 12,000 miles. Below are steps to be taken in cleaning the :
- Disconnect the .
- Place a piece of cloth under the pump to catch spilled petrol.
- On with a glass bowl, slacken the screw at the top of the retainer, swing the retainer to one side and lift off the bowl.
- On later , a metal cover is used. the center screw and lift off the cover. Lift off the mesh filter and wash it in petrol.
- Dip a clean brush in petrol and any dirt from the sediment chamber, then wipe clean.
- Refit the filter and glass bowl or cover. Make sure that the sealing ring is in good condition.
- Tighten the bowl or cover screw just sufficiently to compress the sealing ring and form a petrol-tight seal. Reconnect the , run the and for leaks.
How to renew a
- Disconnect the .
- the fuel pipes at the pump. the end of the inlet pipe with a pointed pencil to prevent fuel leaks.
- Undo the nuts or bolts holding the pump to the .
- Withdraw the pump. If the pump is operated by a short push-rod, pull out the rod.
- Clean the remains of any gasket from the pump mounting area with a scraper. If there is a spacer between the pump and engine, take care not to damage the spacer surface when removing old material, otherwise oil leaks may occur.
- Fit new on both sides of the spacer and offer up the new pump, taking care that the operating lever fits over the camshaft.
- Fit the fixing nuts or bolts, screwing them in finger-tight. While the pump is still loose, push it towards the . If it is fitted correctly, the spring inside will press the pump away from the . Provided this happens, tighten the fixings. If there is no spring resistance, the pump lever has been pushed underneath the camshaft and will not operate. the pump and try again.
- Where the pump is operated by a push-rod, fit the rod and then fit the pump using new . There is no need to carry out step 7 above for similar pump.
- the pencil from the fuel pipe and refit the unions to the pump, taking care not to cross-thread them.
- Reconnect the , run the and for leaks at the pipes.
HOW TO RENEW AN ELECTRIC FUEL PUMP
Depending on the , an electrical fuel pump will be mounted under the at the the rear, inside the boot or under the bonnet. As different types of pump are used, depending on their location, it is important to quote the make and model of , and and chassis numbers when ordering for a replacement. Below are the steps required for its renewal;
- Disconnect the .
- Depending on the location of the pump, either raise and support the rear end of the , lift the bonnet or a trim panel in the boot to gain access to it.
- Release the pump fixing clamp and lift the pump clear. If a plastic pipe is attached to the end cover, detach it.
- Disconnect the live cable and the earth from the pump body.
- Undo the fuel pipe clips and disconnect the pipe which comes from the tank. the end quickly with a pencil-point to prevent fuel leakage. and the other pipe with a pencil.
- Fit the new pump to the clamp, ensuring that it is at the correct attitude.
- Reconnect the live feed and earth ; correctly fit the fuel pipes (one pipe stub on the pump will be marked ‘inlet’), and if necessary, reconnect the breather pipe to the end cover. Reconnect the and switch on the ignition to test the pump, it will click for several seconds as it fills with petrol.
- Lower the rear end of the , if necessary.
Originally posted 2018-10-06 14:01:28.
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