This repair manual describes the construction, opera tion and repair method of a device for Liquefied Petroleum Gas (LPG) mounted on the Toyota forklift of 5F G 70-30, 6FG 70-30, 6FGF75-30, 6FGU 75-30, 7FG 70-J35, 7FGF 75-J35,7FGU 75-32, 6FG(E)33-45, 5FG50.60, 5FGC70-30, 6FGCU 75-30,7FGCU75-32 series and 7FG35-45, 7FGU35-80, 7FGCU35-70 series.
This Manual has been compiled to provide you with useful information on the proper maintenance of Toyota's forklift to maintain its high performance and excellent durability sufficiently for a long time.
BASIC CONSTRUCTION AND OPERATION OF LPG DEVICE The liquid LPG from the LPG cylinder is taken into the regulator for filtration of foreign matters by the built-in filter. The filtered LPG is then sent to the pressure reduction chamber, where it is vaporized into gas which is sucked into the engine through the carburetor. The engine cooling water is led to the regulator as the heat source for LPG vaporization.
CARBURETOR FOR LPG
This carburetor functions to mix the LPG after pressure reduction in the regulator with the air at an appropriate ratio and lead the mixture into the cylinder. A negative pressure type power valve is built in to improve the performance in a heavily loaded state. The carburetor body is integrated with a venturi tube for structural simplification and the number of springs is increased from 2 to 3 for reliability improvement.
REGULATOR
The regulator for the gasoline engine corresponds to a part of the carburetor. It supplies the LPG fuel to the engine while maintaining the vaporized LPG after pressure reduction at a constant pressure level. The new regulator is made very compact since the filter and solenoid separated in the past are integrated with the regulator. The serviceability is improved by reduct~on of the portions requiring adjustment.