P38A Fuel pump refurb question

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rasheed

rasheed

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Bangladesh
Hi chaps

Intermittently there's no pressure at the fuel rail, am suspecting carbon brushes inside fuel pump worn. As usual being stuck in the boonies replacement is long slow option so opting to repair. But I can't get it open as the end seems crimped on?
rangerovers.net/repairdetails/fuelpump4.html has a how to. When it comes to the crucial bit it bounces you to the Classic's pump rebuild page assuring you its the same as the p38. The how-to says there are plastic tabs to gently push in to get the top off the motor but mine seems crimped on.

I've attached pics at the bottom. Need to get the beige plastic cover off the steel cylinder, replace brushes and get it back on and presumably sealed tight. If anyone has done this would love your inputs - thanks in advance!
 

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Dunno but as long as it is totally submerged at all times I doubt it needs to be sealed. Could always tap a few screws through and maybe try some Quicksteel to seal?

@kapilamuni will probably want to know how you get on.
 
rasheed said:
Hi chaps

Intermittently there's no pressure at the fuel rail, am suspecting carbon brushes inside fuel pump worn. As usual being stuck in the boonies replacement is long slow option so opting to repair. But I can't get it open as the end seems crimped on?
rangerovers.net/repairdetails/fuelpump4.html has a how to. When it comes to the crucial bit it bounces you to the Classic's pump rebuild page assuring you its the same as the p38. The how-to says there are plastic tabs to gently push in to get the top off the motor but mine seems crimped on.

I've attached pics at the bottom. Need to get the beige plastic cover off the steel cylinder, replace brushes and get it back on and presumably sealed tight. If anyone has done this would love your inputs - thanks in advance!
Click to expand...

You can't if it's crimped, buy a new unit.
 
wammers said:
You can't if it's crimped, buy a new unit.
Click to expand...
Hiya Wammers, great to hear from you. Yeah I reckon you're right.

New question everyone! I don't want to buy the entire sender and pump assembly. Does anyone know the correct substitution or replacement pump unit to buy? I've been googling. Found something by Delhpi and by another brand but can't be sure they're right. I don't really have the option to send things back if its wrong - I need to be certain I get the right one. Many thanks!
 
shocker said:
Only done Classics, brushes etc, sorry. Would imagine that it doesnt need sealing but fixing in place
Click to expand...
Cheers shocker - ok so you reckon it doesn't need to be sealed? Can you go in to why? Because that's a fix I can certainly do. I just thought since its inside the tank and there's petrol and also fumes its a safety issue.
 
Grrrrrr said:
Dunno but as long as it is totally submerged at all times I doubt it needs to be sealed. Could always tap a few screws through and maybe try some Quicksteel to seal?

@kapilamuni will probably want to know how you get on.
Click to expand...
Cheers, Grrrrrr. So seeing several suggestions that sealing isn't essential. Intriguing. For arguments sake, what's the risk? I'm imagining sparks in a flammable environment but maybe I'm just a little dark that way..
 
I only know that the V8 efi ones sit unsealed in tank, as to why- I shall ask the Mrs as she apprenticed in electrical engineering and explains better...I'll be back
 
shocker said:
I only know that the V8 efi ones sit unsealed in tank, as to why- I shall ask the Mrs as she apprenticed in electrical engineering and explains better...I'll be back
Click to expand...
Fantastic, cheers! Shall wait with bated breath. Regards to Mrs. Shocker.

edit.
Actually, another thought as you said you've done it on Classics. In your opinion, when you put the top back on and it locks in place with the plastic tabs, do you think it makes a seal? I'm leaning towards giving this a shot (depending on what your lady says). It would get the car back on the road whilst I wait for new parts to be sent from England.
 
In order to be a risk there has to be a mix of fumes and air and an ignition source. If, (IF!) the pump is submerged at all times then there is no air so it cannot explode or catch fire. Also, the fuel will cool it. However, it depends where the pump sits. IF (!) it is in a depression at the bottom of the tank so it is submerged at all times then there is no risk. I cannot remember what the P38 is like. I seem to remember the bottom being flat with a small round depression?

I guess you could take the old unit and plunge it into a bucket of fuel. If bubbles come out then clearly it isn't sealed, just crimped.
 
Cheers mate. I had to take a trip for work so I'm away from the car for a week. Will give this a go and shout back when I return. Have a good week!

Grrrrrr said:
In order to be a risk there has to be a mix of fumes and air and an ignition source. If, (IF!) the pump is submerged at all times then there is no air so it cannot explode or catch fire. Also, the fuel will cool it. However, it depends where the pump sits. IF (!) it is in a depression at the bottom of the tank so it is submerged at all times then there is no risk. I cannot remember what the P38 is like. I seem to remember the bottom being flat with a small round depression?

I guess you could take the old unit and plunge it into a bucket of fuel. If bubbles come out then clearly it isn't sealed, just crimped.
Click to expand...
 
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