Lpg Fuel Tanks; Installing Lpg Fuel Tanks - Daewoo G420E Service Manual

LPG Fuel Tanks

The two styles of LPG storage containers available
for industrial use and lift truck applications are
portable universal cylinders and permanently
mounted tanks. Portable universal cylinders are used
primarily for off-highway vehicles and are constructed
in accordance with the DOT-TC (United States
Department of Transport – Transport Canada). The
cylinders are referred to as universal because they
can be mounted in either a vertical or horizontal
position (Figure 4).
Figure 4
NOTE
A 375-psig, relief valve is used on a DOT
forklift tank. The relief valve must be
replaced with a new valve after the first 12
years and every 10 years thereafter.
The tank must be discarded if the collar is damaged
to the point that it can no longer protect the valves. It
must also be replaced if the foot ring is bent to the
point where the tank will not stand or is easily
knocked over.
Tier
G420E/G424E LP Engine

Installing LPG Fuel Tanks

When installing a tank on a lift truck, the tank must be
within the outline of the vehicle to prevent damage to
the valves when maneuvering in tight spaces.
Horizontal tanks must be installed on the saddle that
contains an alignment pin, which matches the hole in
the collar of the tank. When the pin is in the hole, the
liquid withdrawal tube is positioned to the bottom of
the tank. A common problem is that often these
guide-pins are broken off, allowing the tank to be
mounted in any position. This creates two problems.
1). When the liquid withdrawal tube is exposed to the
vapor space, it may give a false indication that the
tank is empty, when it actually is not. 2). The safety
relief valve may be immersed in liquid fuel. If for any
reason the valve has to vent, venting liquid can cause
a serious safety problem,
CAUTION
When empty, the tank is exchanged with a
pre-filled replacement tank. When
exchanging a tank, safety glasses and
gloves should be worn.
9 LPG and LPG Fuel Tanks