Monaco Executive 2001, Руководство пользователя

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Auxiliary braking devices are devices designed to supplement your standard
wheel braking system. The devices are not designed to stop the motorhome com-
pletely. The proper use of an auxiliary braking device can save in costly service
brake repairs. The braking devices will assist in controlling the motorhome
speed.
The Exhaust Brake system, used routinely at normal exhaust operating tem-
peratures, is virtually maintenance free. Some contributing causes which can
result in failures with the exhaust brake include moisture, dirt, carbon and
improper usage.
Starting the engine and idling for short periods of time is not recommended.
Moisture is created within the engine and the exhaust system during cold start-
ups. When normal operating temperatures are not obtained, moisture may get
trapped in the valve housing resulting in rust, leading to insufficient operation of
the exhaust brake.
Some problems you may encounter with your exhaust brake include, but are
not limited to, will not activate or deactivate, intermittent on/off operations or
actuates with the switch off. These are commonly related to electrical symptoms.
Slow operations or delays in operations, as well as limited performance, are
mechanical symptoms. You should refer these problems to your dealer for diag-
nosis.
Pac Brake exhaust retard is such an auxiliary braking device.
Attached directly to engine turbocharger, Pac Brake is activated when dash
switch is "ON" and throttle is "RELEASED." While driving with cruise control
on, it will require tapping service brakes to disengage cruise control. Pac Brake
foot switch will not disengage cruise control. A valve inside brake then moves to
restrict flow of exhaust gases, causing an increase of back pressure within
engine.
Increased back pressure quickly slows down engine, resulting in powerful
braking performance. Amount of braking power you will develop when Pac
Brake is on is relevant to engine speed (RPM). Higher RPM will have more
retarding power. Certain conditions may require down shifting to generate ade-
quate RPM for maximum retarding.
A Pac Brake wired to electronically controlled transmission will usually pro-
vide converter lockup in gears 2 through 6, meaning brake will activate automat-
ically when throttle is released. Once on, brake will control existing road speed
and/or slow sufficiently so Allison Transmission will automatically downshift, if
necessary, to calibration pre-select mode.
Chassis Information
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E X E C U T I V E 7 • 2 1 3
Pac Brake
Operation
(ISC Engine)
Auxiliary Braking