Section V. ORGANIZATIONAL TROUBLESHOOTING PROCEDURES

TM 5-4210-224-14&P

Section V. ORGANIZATIONAL TROUBLESHOOTING PROCEDURES

Para.

General ................................ ....

4-10

Symptom Index ..............................

4-11

4-10. GENERAL.

a. The table in this section lists the common malfunctions which may occur during the operation or maintenance of

the Mini-Pumper Firefighting Truck or components. The troubleshooting should be performed in the order given

in each malfunction.

b. This manual cannot list all malfunctions that may occur nor all tests, inspections, or corrective actions. If a

malfunction is not listed or it is not corrected by the listed corrective actions, notify your supervisor.

4-11. SYMTPOM INDEX.

SYMPTOM ................................ ................................ ................................ ....................

PAGE

HOSE REEL ASSEMBLY

Firehose Nozzle Leaks................................ ................................ ................................ ...

4-29

Hose Reel Rewind Inoperative ................................ ................................ ......................

4-29

HOSE BODY ASSEMBLY

Back-Up Lights Inoperative................................ ................................ ............................

4-29

Stop Lights Inoperative ................................ ................................ ................................ ..

4-29

Rear Warning Lights Inoperative................................ ................................ ....................

4-30

FIRE PUMP, PIPING SYSTEM, VALVES, AND CONTROL RODS

Engine Speeds Too High For Required Fire Pump Capacity or Pressure.......................

4-30

Discharge Valves Difficult To Operate ................................ ................................ ..........

4-30

Discharge Valve Control Rod Is Difficult To Operate ................................ .....................

4-30

Pressure Relief Valve Does Not Recover And Return to Original

Pressure Setting After Opening Valves ................................ ................................ .........

4-30

Unable To Attain Proper Setting On Relief Valve ................................ ..........................

4-30

Water Pressure Is Too High Or Too Low ................................ ................................ .......

4-30

Fire Pump Will Not Engage ................................ ................................ ...........................

4-31

Fire Pump Will Not Prime Or Loses Prime ................................ ................................ ....

4-31

Leak At Fire Pump Packing ................................ ................................ ..........................

4-31

Water In Fire Pump Gear Box ................................ ................................ ......................

4-32

ENGINE COOLING SYSTEM

Engine Coolant Overheating................................ ................................ ..........................

4-32

Engine Coolant Loss................................ ................................ ................................ ......

4-32

ENGINE EXHAUST SYSTEM

Vibrating Or Rattling From Exhaust System ................................ ................................ ..

4-32

Restricted Exhaust System................................ ................................ ............................

4-33

Exhaust Leakage And/Or Noise................................ ................................ .....................

4-33

4-26