Chapter 3. OPERATOR MAINTENANCE INSTRUCTIONS

TM 5-4210-224-14&P

CHAPTER 3

OPERATOR MAINTENANCE INSTRUCTIONS

Section

OPERATOR TROUBLESHOOTING PROCEDURES

Section

II.

MAINTENANCE OF HOSE REEL ASSEMBLY

Section

III.

MAINTENANCE OF PUMP COMPARTMENT ASSEMBLY

Section

IV.

MAINTENANCE OF FIRE PUMP, PIPING SYSTEM, VALVES,

AND CONTROL RODS

Section

MAINTENANCE OF CAB ASSEMBLY, LIGHTS, SWITCHES,

GAUGES, CONTROLS AND INDICATORS

Section

VI.

MAINTENANCE OF WHEEL ASSEMBLY

Section I. OPERATOR TROUBLESHOOTING PROCEDURES

Para.

Para

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

3-1

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

3-2

3-1. GENERAL.

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

the Mini-Pumper Firefighting 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.

3-2. SYMPTOM INDEX.

SYMPTOM

PAGE

FIRE PUMP, PIPING SYSTEM, VALVES AND CONTROL RODS

Water Pressure Is Too High (Over 150 PSI) Or Too Low ................................ ..............................

3-3

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

3-3

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

3-3

Insufficient Fire Pump Capacity ................................ ................................ ................................ ....

3-4

Excessive Engine Speed Is Required To Achieve Required Fire Pump

Pressure Or Capacity ................................ ................................ ................................ ...................

3-4

Engine Speeds Too High For Required Fire Pump Capacity Or

Pressure................................ ................................ ................................ ................................ ........

3-5

Pressure Relief Valve Does Not Relieve Pressure When Valves Are

Closed................................ ................................ ................................ ................................ ...........

3-5

Unable to Attain Proper Setting On Pressure Relief Valve ................................ ............................

3-5

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

3-5

ENGINE COOLING SYSTEM

Engine Overheating ................................ ................................ ................................ .....................

3-5

3-1