Recommended Safety Maintenance Procedures for LP Gas Fueled
Equipment
WARNING:
LP GAS is a combustible fuel that is heavier than air. Escaping gas may accumulate in low
areas. The fuel cylinder should be mounted so that it does not extend outside the truck.
Turn off the fuel valve when the machine is not in service.
Use only Underwriters Laboratories or Factory Mutual listed LP-GAS hose assemblies where pressure
fuel lines are required.
Install all threaded pipe fittings using an approved sealing compound.
Support fuel lines with clamps to minimize chafing and wear.
The LP-GAS solenoid valve should be wired to an automatic shut off switch (oil pressure or vacuum) to
prevent leakage of gas in the event the ignition is on without the engine running.
Check the propane solenoid or vacuum shutoff valve for leakage as follows:
1) Turn fuel cylinder valve off, start and run engine until it stops.
2) Install a 0 to 30 PSI pressure gauge per instruction A or B.
a. Primary test of single units consisting of primary and secondary regulators.
b. Between the primary and secondary stage regulators when the propane system consists of
two separate regulators.
3) Open cylinder fuel valve. The pressure gauge should maintain a zero reading. If it does not,
replace or repair the solenoid valve or vacuum shut off valve.
An odor is added to LP-GAS to help detect leaks. If the gas odor is detected the fuel cylinder supply valve
and engine should be turned off. Remove all sources of ignition, and ventilate the area. Make all of the
necessary repairs before you turn the fuel supply on.
The complete LP-GAS system should be inspected periodically. Check all hoses for wear, connections
for leaks and all parts for damage.
NOTE: Fuel hoses have a limited life expectancy. They should be checked for cracking and drying due to
age. Hoses with visible signs of age should be replaced. Use only Underwriters Laboratories or Factory
Mutual listed LP-GAS parts for replacements.
NOTE: The above information is provided as a guide. Consult the National Fire Protection Association
pamphlet 58 for the safe storage and handling of liquefied petroleum gases.
Governmental safety regulations in your locality could vary. Check with the authority having jurisdiction to
be sure that you meet all of their requirements. Contact the manufacturer for detailed service information.
SERVICE WORK SHOULD BE PERFORMED BY QUALIFIED PERSONNEL ONLY
