landcruiser 75/79 twin tank fuel system

[Jerry2023]

I bought Toyota Landcruiser 75 series to work on as the car is currently not registered. The vehicle is equipped with a twin fuel tank system. I have been advised that both tanks are operating independently as Toyota 75/79 series have a fuel changeover system. So, can suck fuel from either the main or sub direct to the engine. The fuel from the sub can be drawn into the engine with a push of the button on the sub tank fuel gauge on a dash.

I have been unable to put my hand on any manual helping me to understand in detail how the twin tank system works.

Ideally, I’d like to see the electrical schematic showing the main and sub tank fuel pumps, the fuel transfer valve (solenoid, if any) and the sub gauge button activating the fuel transfer from the auxiliary tank. I searched the Internet, visited automotive outlets to buy a manual, talked with mechanics and automotive electricians, discussed the issue with my local Toyota dealership while no one can assist me on the issue.

Help would be appreciated
Jerry

 

[Volly]

You can find the electrical schematic including switchover in 'Repair manual for chassis & body' jan 1990 in electrical schematic 8, column 6.
An exploded view of the subtank and fuel lines can be found in the same manual at page BO-74.

Hope this helps a bit!

 

[Jerry2023]

You can find the electrical schematic including switchover in 'Repair manual for chassis & body' jan 1990 in electrical schematic 8, column 6.
An exploded view of the subtank and fuel lines can be found in the same manual at page BO-74.

Hope this helps a bit!

Hi Volly, thanks mate, I'm in Australia having spent money on crap manuals with no such info. Seems like there might be many manuals with a similar title. Wonder if you could email me a copy of the cover page of this manual so, I can try to trace it.

[email protected]

cheers
jerry

 

[Volly]

Hi Volly, thanks mate, I'm in Australia having spent money on crap manuals with no such info. Seems like there might be many manuals with a similar title. Wonder if you could email me a copy of the cover page of this manual so, I can try to trace it.

[email protected]

cheers
jerry

I'll use your email address!