Pacbrake Inline Mount, Installation Manual

INLINE MOUNT Exhaust Brakes

I N S T A L L A T I O N   M A N U A L  

-   L 2 0 3 1

P G .   5

Wiring Schematic Index

*  1998-2002 Ford Econoline Vans equipped with Powerstroke, see wiring schematic on page 6
*  Pre-1998 Ford Econoline Vans Equipped with Powerstroke, see wiring schematic on page 9
*  Navistar vehicles equipped with 444E, see wiring schematic on Page 13
*  1999-2002 Dodge 24 Valve Electronic equipped with Cummins 5.9/ISB, see wiring schematic on page 14
*  Pre 1999 Dodge 12 Valve Mechanical equipped with Cummins 5.9, see wiring schematic on page 16

Application Guide

Engine

Max. 

Backpressure

@RPM

Exhaust 

Brake

*C10300 model is an adjustable brake 
and must be set during a road test 
using a backpressure gauge. Due 
to upgrades and variations between 
engines (i.e: different turbo chargers) it 
is not possible for Pacbrake to provide 
a preset brake to cover all possibilities.

Econoline or Ford Powerstroke

32 PSI

3400

C20366

Dodge Cummins 5.9L

35 PSI

3100

*C10300

Dodge Cummins 5.9L 
(with heavy duty valve springs)

60 PSI

3100

*C20369

Dodge Cummins 24 valve

60 PSI

3100

*C10300

International 444E

32PSI

3400

*C20366

Testing Exhaust Brake Back Pressure

Prepare for road test check or set exhaust brake back pressure. Pacbrake test gauge kit PT# C10600, can be purchased through 
the Pacbrake distribution system. This kit contains all the necessary parts to perform back pressure tests. The gauge used must be 
a dampened (liquid filled) type to accurately read this pressure.

1. Remove the 1/8” NPT plug located in the exhaust brake body and install fitting #3. Install the steel tube #4 into the fitting 

installed in the exhaust brake. Instert fittings #5 and #6 into the neoprene hose, moistening the fittings and firmly pushing 
the hose onto the barbed end. Install one end of the hose to the steel tube and the other to the gauge. Tighten all fittings 
securely. Route neoprene hose into cab.

Note: This test must be performed to ensure engine manufactures back pressure specifications are not ex-
ceeded - check the application guide for the correct maximum allowable PSI setting at governed speed.

2. Warm the engine to normal operating temperature.

3. Road test the vehicle by providing long durations of maximum RPM with the exhaust brake applied. This is best achieved 

with weight in the vehicle and a downhill grade. 

4. .Read and record the pressure achieved on the gauge at the governed engine speed. Pacbrake inline models have an 

adjustable stop bolt to adjust exhaust back pressure, This is done by the stop screw which limits the activating arm travel, 
thus reducing back pressure.