FSVO ACTUAL CERTIFICATION PAPER
2026 QUESTIONS WITH ANSWERS FULL
SOLUTION.
■ Vaccuum test before. Answer: Before: remove all discharge caps and
drain booster tank; chock wheels
■ Vacuum test during. Answer: During: drain water from fire pump and
booster tank; close all drains, intake valves, cooler lines, and any other
sources of vacuum leaks to isolate fire pump; place caps on all suction or
external intake fittings and remove caps from discharge fittings.
■ Vacuum test during cont (1). Answer: Turn battery on (not necessary
to start engine); fully open primer control handle and hold in that
position
■ Vacuum test during cont (2). Answer: Continue to hold hand in fully
engaged position until max vacuum is achieved (15-20 seconds); You
should see a vacuum reading of approx 22in HG on supply master
gauge. Return handle to fully closed position.
, ■ Vacuum test after. Answer: Record reading and wait 5 minutes and
record again; reading should not drop below more than 10in Hg in 5
minutes. If it does follow SOPs and have vacuum leak repaired
■ Air brakes:. Answer: Air pressure build-up from 85 psi to 100 psi
should take 45 seconds or less. While driving, observe the air pressure
gauge during build-up to ensure proper air system operation.
■ Dual tires should always be inflated to the same pressure and have the
same amount of tread depth. When dual tires have more than a _____ psi
pressure difference tread depth, ________ of the tires carries too much
of the load and becomes overloaded. Answer: -10 PSI pressure distance
-One
■ Function of maintenance records:. Answer: To find any abnormalities
so corrective action can be taken
■ Overthrottling can result in:. Answer: Lugging; Lugging occurs when
the throttle is applied while the transmission is too high a gear for a
given set of conditions
■ When over throttling a Diesel engine, more fuel is being injected than
can be burned which causes:. Answer: Excessive amount of carbon
particles issuing from the exhaust (black smoke) oil dilution, and
additional fuel consumption
2026 QUESTIONS WITH ANSWERS FULL
SOLUTION.
■ Vaccuum test before. Answer: Before: remove all discharge caps and
drain booster tank; chock wheels
■ Vacuum test during. Answer: During: drain water from fire pump and
booster tank; close all drains, intake valves, cooler lines, and any other
sources of vacuum leaks to isolate fire pump; place caps on all suction or
external intake fittings and remove caps from discharge fittings.
■ Vacuum test during cont (1). Answer: Turn battery on (not necessary
to start engine); fully open primer control handle and hold in that
position
■ Vacuum test during cont (2). Answer: Continue to hold hand in fully
engaged position until max vacuum is achieved (15-20 seconds); You
should see a vacuum reading of approx 22in HG on supply master
gauge. Return handle to fully closed position.
, ■ Vacuum test after. Answer: Record reading and wait 5 minutes and
record again; reading should not drop below more than 10in Hg in 5
minutes. If it does follow SOPs and have vacuum leak repaired
■ Air brakes:. Answer: Air pressure build-up from 85 psi to 100 psi
should take 45 seconds or less. While driving, observe the air pressure
gauge during build-up to ensure proper air system operation.
■ Dual tires should always be inflated to the same pressure and have the
same amount of tread depth. When dual tires have more than a _____ psi
pressure difference tread depth, ________ of the tires carries too much
of the load and becomes overloaded. Answer: -10 PSI pressure distance
-One
■ Function of maintenance records:. Answer: To find any abnormalities
so corrective action can be taken
■ Overthrottling can result in:. Answer: Lugging; Lugging occurs when
the throttle is applied while the transmission is too high a gear for a
given set of conditions
■ When over throttling a Diesel engine, more fuel is being injected than
can be burned which causes:. Answer: Excessive amount of carbon
particles issuing from the exhaust (black smoke) oil dilution, and
additional fuel consumption
