DUCT-WIRE 1666159 - Caterpillar

Table 4
Brake Holding Ability Test(1)
Engaged Brake Engine Speed (rpm) Engaged Brake Engine Speed (rpm)
Service Brake Parking Brake
Manual Retarder Secondary Brake
(1) The engine speed should reach a minimum of 1400 rpm before there is any machine movement.
Table 5
Brake Master Cylinders
Brake Master Cylinder Air Pressure Oil Pressure(1)
Front Brake Master Cylinder
Front Brake Master Cylinder
Rear Brake Master Cylinder
Rear Brake Master Cylinder
(1) The pressure of the oil should be 6.6 times the pressure of the air.
Table 6
Slack Adjusters(1)
Slack Adjuster Pressure At The Slack Adjuster(2) Pressure At The Wheel(3)
Front Slack Adjuster
Left Front Wheel
Front Slack Adjuster
Right Front Wheel
Rear Slack Adjuster
Left Rear Wheel
Rear Slack Adjuster
Right Rear Wheel
(1) The pressures should be approximately the same value.
(2) Use the pressure tap on the slack adjuster.
(3) Measure this pressure at the port that is labelled. "S"
Table 7
Leakage In The Parking And Secondary Brake
Decrease In Pressure In The First Minute
Plugged Wheel Pressure Decrease Plugged Wheel Pressure Decrease
No Plugged Wheels ------- -------
Left Rear Left Front
Right Rear Right Front
Table 8
Brake Wear
Piston Travel Front Brake Front Brake
Percent of Wear Rear Brake Rear Brake
Percent of Wear
Baseline
Rebuild 1
Rebuild 2
Rebuild 3
Rebuild 4
Rebuild 5
Rebuild 6
Rebuild 7