LTI Maintenance

Question 1

What are 11 the daily checks for the truck?

Answer 1

Fuel supply
Engine oil
Coolant
Onan oil
Brakes, air reservoir pressure 
Tires/wheels
Signal/lighting system 
Electrical system
Engine fluid leakage
Power train
Seatbelts

Question 2

When conducting your daily checks of the fuel supply, engine and Onan oil, and coolant, what are you checking for?

Answer 2

Capacity of fluid are maintained

Question 3

(Daily) When check the brakes and air reservoir pressure, at least what psi should both primary and secondary tanks have a start of shift?

Answer 3

90 psi, perform COLA

Question 4

(Daily) When checking the electrical system, with the engine and accessories off what should the minimum voltage be?

Answer 4

12.9 volts

Question 5

(Daily) When checking the electrical system, after starting engine and high idle engaged, voltage should be what minimum?

Answer 5

13.7 volts

Question 6

What are you daily checks for tires and wheels?

Answer 6

Visual inspection of tires and wheels for damage

Question 7

What are your daily checks of the engine?

Answer 7

Look for signs of fluid leakage

Question 8

What are you daily checks of the running gear (powertrain)?

Answer 8

Condition/tightness of bolts, nuts, fittings, and shafts

Question 9

What are your daily checks for signaling/lighting?

Answer 9

Inspect ALL lights for proper operation

Question 10

What are the 23 weekly checks of the truck?

Answer 10

Engine 
Parking brakes
Windshield wipers
Aux front wheel lock
Brakes
Water filter
Tires
Fuel filter/water separator
Air tanks
AC
Batteries
Power steering
Exhaust system
Engine water pump
Transmission fluid 
Suspension
EPU
Swing drive
Aerial ladder
Hydraulic reservoir 
Tiller cab
Onan
5th wheel pivot shafts

Question 11

What should your weekly check of the engine be?

Answer 11

Run for 10 mins @ high idle with AC at maximum cool with all electrical accessories activated

Deactivate load manager

Question 12

What should your weekly check of the parking brakes be?

Answer 12

Put transmission in drive with parking brake set

Remove foot from brake pedal and observe if apparatus moves

Question 13

What should your weekly check of the front aux wheel lock be?

Answer 13

Engine off and chock wheels
Set rear and front brakes
Assistant observe front axle push rods have actuated
Listen for leaks

Question 14

What should your weekly checks of the brakes be?

Answer 14

Check for the thickness of pad 1/4” or less call in and schedule brakes

Inspect rotors for any cracks extending to edge of rotor

Look for excess oil or grease on brake or rotor

Question 15

What are your weekly checks of the water filter?

Answer 15

Inspect for proper fluid color, level or leaks

Question 16

What is the weekly check of the EPU?

Answer 16

Run EPU, circulate fluid, check operation and check for leaks

Question 17

What is the weekly check of the swing drive?

Answer 17

Remove pipe plug placated near top, oil should be above top face of gear but not higher than bottom of plug opening, refill as needed

Question 18

What is your weekly check of the aerial ladder?

Answer 18

Inspect drive pinion bearing gear teeth for wear, alignment and lubrication

Inspect control console and comm system

Inspect collector rings under turntable, brushes for wear and hydraulic lines

Question 19

What are your weekly checks of the batteries?

Answer 19

Observer battery self check eye for green color

If not green note and report

Question 20

What are you weekly checks of the air tanks?

Answer 20

Drain each and every air tank of water and oil

Question 21

What is your weekly check of the water pump?

Answer 21

Check for evidence of leakage

Look at condition of coolant hose and connections

Question 22

What is your weekly check of the transmission fluid?

Answer 22

Perform manual cold check of transmission fluid

Question 23

What is your weekly check of the hydraulic reservoir fluid?

Answer 23

Check fluid level

Question 24

What is your weekly check of the tiller cab?

Answer 24

Inspect door hinges and latches

Question 25

What is your weekly check of the Onan generator?

Answer 25

Run the engine with an electrical load until warm Check operation and check for leaks

Question 26

What is your weekly check of the fifth wheel pivot shafts?

Answer 26

Lubricate at each pivot shaft seek

Question 27

What are you weekly checks of the axle hubs (front and tiller for 00-06)?

Answer 27

Check fluid level

Question 28

What is the F-377?

Answer 28

Bi-monthly preventative maintenance record

Question 29

Proper maintenance of apparatus is dependent on what?

Answer 29

Orderly procedure | Established inspection routine

Question 30

When are F-377 performed?

Answer 30

Every other month in accordance with following schedules During the first 2 weeks of every even month for heavy apparatus

Question 31

Who reviews and sign F-377?

Answer 31

Station commander

Question 32

How many copy’s for the F-377 and where do they go?

Answer 32

2 copies, 1 in logbook the other to station commander for filing

Question 33

Items checked on apparatus that are in good condition and not in need of service, repair, etc shall be marked what in designated column on F-377?

Answer 33

OK

Question 34

A brief statement of the trouble in which column shall indicate items requiring attention?

Answer 34

Repair comments

Question 35

Members calling in needed repairs shall log on the F-377?

Answer 35

Name of person contacted Instructions received Date

Question 36

If a reserve apparatus has had limited use within the 2 month period is it necessary to fill out an entire F377?

Answer 36

No, only checks that you feel necessary However, at 6 month oil change entire F-377 must be filled out

Question 37

The F-377 shall be filled out at what level with the determination made that needed repairs have been properly reported?

Answer 37

Station level

Question 38

What are the bi-monthly checks of the truck?

Answer 38

``` Steering gear box and linkage Steering column Brakes Driveline Differential Radio Air cleaner Air compressor Alternator Fuel pump Cooling system Drive belts Starter Wiring Engine mounts Tires Door/hinges locks Odometer Engine hours Aerial hours Generator Hours ```

Question 39

What are your bi monthly checks of the steer box and linkage?

Answer 39

Move steering wheel back and forth (40-60) rapid movements Check for any looseness or excessive movement of linkage and connections

Question 40

What is your bi monthly check of the steering column?

Answer 40

Grasp top of steering column and attempt to move back and forth Note and report any movement detected

Question 41

What are your bi monthly checks of the brakes?

Answer 41

Inspect all mechanical components for looseness, wear breakage or missing parts Check slack adjusters no more than 2” travel Check brake lines

Question 42

What is your bi monthly check of the drive line?

Answer 42

Try to observe or feel for any measurable up and down movement If any movement detected note and report

Question 43

What is your bi monthly check of the differential?

Answer 43

Check oil level, oil level should be even with plug opening

Question 44

What is your bi monthly check of the air cleaner?

Answer 44

Inspect hoses, ducts, pipe, connections etc for wear brakes and mounting Air cleaner element to be replaced every other year or on an “as needed” basis, determined by amount of inlet restriction by engines diagnostic system (based on last number of shop number)

Question 45

What is your bi monthly check of the air compressor?

Answer 45

Secure mount to engine Audible air leaks Water and oil leaks around compressor area Condition of hoses

Question 46

What is your bi monthly check of the fuel pump?

Answer 46

Inspect for signs of loose mounting and examine fuel lines for hard or spongy condition

Question 47

What is your bi monthly check of the cooling system?

Answer 47

Coolant should be green | Inspect water pump for proper mount and any signs of leakage around “weep” hole and the pump to block mount area

Question 48

What are your bi monthly checks for the drive belts?

Answer 48

No more than 1/2” deflection measured at a point midway between pulleys

Question 49

What is the bi monthly check for the starter motor?

Answer 49

Operate starter motor and listen for unusual noise or operating characteristics While cranking observe for any movement, looseness of mounts

Question 50

What are the bi monthly checks for the engine mounts?

Answer 50

Check for looseness of mounts and or damage to rubber

Question 51

What is the bi monthly checks for tires?

Answer 51

Use tire depth gauge on center of tire, a reading 1/8” or less should be reported on F-377 and called in for replacement

Question 52

How do you lubricate king pins on steering axles?

Answer 52

Current method of lubricating king pin thrust bearings is to jack up each wheel at axle Removes load on bearings

Question 53

How do you lubricate universal joints?

Answer 53

Observe grease seeping past all 4 cross bearing seals If grease does not show up, tap opposite side of yoke with plastic or similar type hammer while applying lube gun pressure

Question 54

How do you lubricate drive shaft slip yoke to prevent falling or seizing?

Answer 54

Apply grease to the fitting until it appears at the relief hole in the end of the yoke plug

Question 55

Who lubes the brake caliper assembly?

Answer 55

The shops lube them during annual aerial test because they require a special, high temperature, high pressure grease by Rockwell

Question 56

Can you use wire brushes to clean old grease off of aerial ladder?

Answer 56

No

Question 57

After lubing the aerial at what degree do you hoist the aerial ladder to before retracting it?

Answer 57

60 degrees, prevent new grease from being scrapped off when retracted

Question 58

How do you lubricate the fifth wheel?

Answer 58

Tractor in-line, 60 degrees to left and right Allows grease to travel completely around fifth wheel race

Question 59

What are the 6 special lube instructions?

Answer 59

``` King pin (steering axles) Universal joints Driveshaft slip yoke Brake caliper assembly (done by shops) Aerial ladder Fifth wheel ```

Question 60

What type of inflation on tires imposes excessive strain on tire cords, wreaking their resistance to impact and could cause tire to rupture and blow outs?

Answer 60

Over inflation

Question 61

What type of inflation is the enemy of the tire life and one of the primary causes of tire failure, increases flexing, causes heating, reduced strength, breakdown, and possible separation of the tire components, and increase rolling resistance which increases fuel consumption and reduces tread life?

Answer 61

Under inflation

Question 62

Inflation pressures should always be checked when tires are what temperature?

Answer 62

Cold

Question 63

Never do what to tires when hot to relive normal pressure build up?

Answer 63

Bleed air

Question 64

Unequal inflation on set of dual tires causes more of the load to be absorbed by 1 tire than the other, this overload condition may cause an overheating condition leading to premature failure of how many tires?

Answer 64

1 or both

Question 65

Measurements for tread depth shall not be made at what 3 locations of the tire?

Answer 65

Tie bars, humps, or fillets

Question 66

Tires shall be replaced at what 3 instances?

Answer 66

Tire depth at or less than 4/32”, tire showing evidence of tread separating from tire case, tires showing any exposed fabric through tread or sidewall

Question 67

Air dryers are replaced every how many years for LTI (based on shop number)?

Answer 67

2 years