PAGS - Emergency Vehicle: Pre-Trip Air Brake Check

Practical Application Guide Sheet

Emergency Vehicle: Pre-Trip Air Brake Check
Candidate Name*

First NameLast Name
Candidate Performance Competency: Candidate will conduct a pre-trip check of the vehicle air brake system per MVA guidelines in the order shown (COMAR 11.22.02.06).
Tasks

86 points
Place wheel chocks on both sides of a rear tire.*
Value: 8 points
Turn on the vehicle battery and ignition switch. Verify gauges and air system warning signals are functioning.*
Value: 6 points
Verify the parking brake is applied: Air protection valve (APV) is out | Applied parking brake implies that no air is charging the brake chamber*
Value: 6 points
Release the parking brake and allow the air tanks to settle: APV is in*
Value: 6 points
Observe the air gauges for 1 minute for air loss exceeding guidelines: Straight Truck: < 3psi loss in 60 seconds | Tractor Trailer: < 4psi loss in 60 seconds*
Value: 8 points
Apply steady pressure to the brake pedal and let the air tanks settle. Continue to hold pressure for 60 seconds.*
Value: 6 points
Continue to hold steady pressure for 60 seconds and observe the air gauges for air loss exceeding guidelines: Straight Truck: < 3psi loss in 60 seconds | Tractor Trailer: < 4psi loss in 60 seconds*
Value: 6 points
Fan the brake pedal to bleed air from the system and observe the audible and visible low-air alarms for accurate activation: Air level range of 60-90ps*
Value: 8 points
Fan the brake pedal to continue bleeding air from the system and observe the APV automatically engages the parking brake: Air level range of 20-40psi | APV is out*
Value: 8 points
Candidate will note that a failure of the APV to automatically activate will result in the vehicle failing the brake test.*
Value: 6 points
Candidate must stop fanning the brake pedal once the APV activates: Damage to the brakes may occur if the pedal is fanned while the parking brakes are engaged*
Value: 6 points
Start the motor and increase idle to 1200rpm. Observe the air pressure gauges to ensure pressure is building effectively: Pressure must rise from 50 psi pressure to 90 psi < 3 minutes at 1200rpm | Air pressure must not build past 135psi*
Value: 8 points
Ready the apparatus for service: Verify all gauges have reached working pressures | Shut down motor | Remove wheel chocks as appropriate*
Value: 4 points
Tasks Total
COLA Acronym

8 points
Candidate will describe the acronym COLA as it applies to air brake systems.
C - Cut-in pressure: Compressors should engage to replenish air systems at approximately 100psi | Compressors that do not engage prior to 95psi merit a defect report | Compressors that do not engage prior to 80psi meet OOS criteria*
Value: 2 points
O - Cut-out pressure: Compressors should disengage once air systems reach 120 to 135psi | Compressors that do not disengage prior to 135psi meet OOS criteria*
Value: 2 points
L - Low pressure warning: Audible and visible warnings must activate at 60 to 90psi | Warnings that activate below 60psi merit a defect report*
Value: 2 points
A - Air leakage: Must be less than 3psi/minute for straight trucks | Must be less than 4psi/minute for tractor trailer trucks*
Value: 2 points
COLA Total
NFPA 1911 Chapter 12 – Air Brake System “Quick Build-up”

6 points
Candidate will describe the requirements of NFPA 1911 Chapter 12.
Apparatus air brake system drained to 0 psi.*
Value: 2 points
Start the motor and increase idle to enhance air compressor output.*
Value: 2 points
Brake system will become serviceable within 60 seconds: Sufficient pressure exists to move the apparatus without brake drag | Is able to come to a full stop using service brakes.*
Value: 2 points
NFPA 1911 Chapter 12 Total
Total Points
Critical Fail Points
Failure to successfully perform any of the following components will result in an automatic failure of this evaluation regardless of total score.
1. Failure to complete any of Steps 1 through 13
2. Failure to complete Steps 1 through 13 in order
Evaluator: Select the final outcome of the exam below.*

PASSFAIL - Overall PointsFAIL - Critical Fail Point
Evaluator Name*

First NameLast Name
Date*

MonthDayYear
Date
Evaluator Signature*

Clear
Evaluator Comments
Should be Empty:

Practical Application Guide Sheet

Tasks

COLA Acronym

NFPA 1911 Chapter 12 – Air Brake System “Quick Build-up”

Critical Fail Points