JACOBS EXHAUST BRAKE®
Increased Vehicle Control Reduces slowing time and distance on fl at
land and enables faster downhill control speed, offering driver comfort and peace of mind.
Reduced Downtime and Maintenance Cost: Helps service brakes last three
or more times longer.
Reliable Exclusive design eliminates contamination
and carbon build-up in the housing and keeps the butterfl y plate opening and closing freely.
Durable High-silicon molybdenum casting and butterfl y offer better
heat resistance and durability. Chrome plated butterfl y axles reduces friction and prevents sticking.
Effi cient Aerodynamic design of the housing and butterfl y plate allows
a smooth exhaust gas fl ow to maintain fuel economy.
No Maintenance Design No need for lubrication or adjustments.
Versions In-line and turbo-mount designs available as well as multiple mounting
orientations. Lightweight unit puts less stress on the turbocharger.
Warranty 5 years or 150,000 miles, whichever comes fi rst, on brake assembly and
1 year unlimited mileage warranty on Jacobs attaching components.
Jake Brake Heritage With 3 million brake kits sold, the trucking industry has come to embrace the
Jake Brake brand, with 1.8 trillion miles of proven road experience and high customer satisfaction.
Rigorous Testing Jacobs conducts comprehensive endurance, dyno-performance and salt spray
testing to ensure the quality, effectiveness and longevity of your exhaust brake.
FOR THE ROAD AHEADE NG INE E R E D
Ferrellgas runs 191 T300 Kenworth’s
powered by the CAT C7 engine
equipped with the Jacobs Exhaust
Brake. After seeing our brake life
increase 50% from 40,000 miles to
60,000 miles we have made this a
standard feature on our truck spec.
Our Drivers also appreciate the added
braking control and reliability the
exhaust brake has added.
Jim Hottel, Fleet Maintenance Manager, Ferrelgas
Introducing the latest Exhaust Brake designed for Caterpillar Medium Duty Engines- C7 and C9
Kenworth’s T300 Straight TruckC7 engine application only
Technical Specifications for C7 & C9
JACOBS EXHAUST BRAKE C7, C9
Jacobs Vehicle Systems, Inc
22 East Dudley Town Road Bloomfi eld, CT USA 06002 www.jacobsvehiclesystems.comP/N 25636 Rev. C 2/05
FOR THE ROAD AHEADE NG INE E R E D
1000 1200 1400 1600 1800 2000 2100 2200 2400 2500RPM
28 42 59 79 103 131 147 164 195 210HP
Retarding Power
“A” Measurement 9.09 in. 231 mm
“B” Measurement 3.62 in. 92 mm
“C” Measurement 10.91 in. 277 mm
Weight 13.6 lbs. 6.17 Kg.
Exhaust Pipe Size 4 in. 101.6 mm
Air Supply Pressure 75-145 psi 5.2-10 BAR
Air Cylinder Thread 1/4-18 NPT
2800
Ret
ard
ing
Po
wer
(H
P)
140010
50
90
130
170
210
250
1575 1750 1925 2100 2275 2450 2625
C9 Exhaust Brake Performance
RPM
140010
50
90
130
170
210
250
1575 1750 1925 2100 2275 2450 2625 2800
C7 Exhaust Brake Performance
RPM
Ret
ard
ing
Po
wer
(H
P)
1400 1600 1800 2000 2200 2400 2600 2800RPM
40 54 74 91 114 136 160 188HP
Retarding Power
C9 Exhaust Brake PerformanceC7 Exhaust Brake Performance
P E R F O R M A N C E
HIGH SILICON HIGH SILICON
MOLYBDENUM MOLYBDENUM
CASTING AND CASTING AND
COMPONENTSCOMPONENTS
TURBO OR IN-
LINE MOUNTING
OPTION
FULLY SEALED
AIR CYLINDERAIR CYLINDER
CHROME PLATED CHROME PLATED
BUTTERFLY AXLESBUTTERFLY AXLES
“A” Measurement 9.09 in. 231 mm
“B” Measurement 3.25 in. 82.5 mm
“C” Measurement 10.75 in. 273 mm
Weight 12.2 lbs. 5.5 Kg.
Exhaust Pipe Size 4 in. 101.6 mm
Air Supply Pressure 75-145 psi 5.2-10 BAR
Air Cylinder Thread 1/4-18 NPT
A
B
C
C9*
C7*
JACOBS EXHAUST BRAKE®
AERODYNAMIC
DESIGN
NO PRODUCT NO PRODUCT
MAINTENANCEMAINTENANCE
Also available for Models 3116, 3126, 3126B and 3126E* Please visit www.jacobsvehiclesystems.com for application information