Paccar MX-13 Operator's Manual - page 32
Operating Instructions
3
Engine Compression Brake Level
Switch Operation
There are 2 switches that control your
vehicle’s engine compression brake.
One switch turns the system on/off and
the second switch controls the braking
level. These switches are located on
the dash switch panel.
For the 3-position engine compression
brake level switch, there will be 100%
engine braking when the switch is in
the up (HIGH) position. In the middle
(MEDIUM) position, there will be 66%
engine braking. In the down (LOW)
position there will be 33% engine
braking.
With the compression brake switch
ON, the compression brake will be
engaged when the service brake is
applied.
If the cruise control is operated in
conjunction with the compression
brake, the compression brake will
engage to maintain the cruise set
speed.
On/Off Switch Symbol
Compression Brake Level Switch
Symbol
3-10