MA NU A L
P-14A and P-14B
ENGINE BRAKES
Designed for Cummins N-14 Engines
Kit Numbers P14018 (A), P14022(B)
Application Guide Inside
P-14A and P-14B - Cummins N-14
Important - Application Guide
DESIGNED FOR CUMMINS N-14 ENGINES WITH THE FOLLOWING ENGINE CPL NUMBERS:
P-14A P-14B
CPL 1833 N-14 330E/350E CPL 2003 N-14 500E
CPL 1807 94 N-14 CPL 1896 94 N-14
CPL 1987 N-14 350E CPL 1852 94 N-14
(310E-370E) CPL 1844 94 N-14
CPL 1809 94 N-14
Important Note:
Do not install a P-14A or P-14B engine brake on engines not included in the above chart
For Additional Engine Information, Consult Pacbrake at 1-800-663-0096.
Brake Housing Installation
Clean the top of the engine around all three valve
1 covers and remove all components required to
access the rocker boxes. Remove all three valve
covers, saving gaskets for reuse later.
Remove the pipe plug shown in each of the three
2 rocker boxes and discard. This is the oil supply to
the engine brake, clean any debris from this area.
I N S TA L L AT I O N M A N U A L - L2039 PG. 2
P-14A and P-14B - Cummins N-14
Clean gasket surface and install the gaskets
3 supplied on the rocker boxes.
NOTE: The gasket must be installed cor-
rectly, check the oil supply port for correct
gasket alignment.
Place one housing on each rocker box hous-
4 ing carefully. Loosely install the 6 mounting
capscrews into each Pacbrake housing. Before
tightening the capscrews check each slave pis-
ton adjusting screw, it should be backed off until
the screw is no longer in contact with the slave
piston. (This will prevent possible valve to piston
contact when torquing.)
Carefully run the capscrews down evenly in the
5 torque 2
3 6
sequence below.
DO NOT use an impact wrench.
5
1
Torque the capscrews to 35 lbs ft (48 Nm) in the
4
sequence shown. Then torque to 70 lbs ft (95
Nm) in the same sequence. Double check the
torque on all 18 capscrews before proceeding.
S L A V E P I S T O N A D J U S T M E N T-
6 FEELER GAGE METHOD.
Pacbrake feeler gauge .023" PN P30870 is
required.
IMPORTANT:
This adjustment must be done correctly. Fol-
low these instructions carefully. Pacbrake feeler gage .023" PN P30870
I N S TA L L AT I O N M A N U A L - L2039 PG. 3
P-14A and P-14B - Cummins N-14
The engine must be cold, below 140F (60C)
to attain the proper lash of .023" Do not adjust
the slave lash with the engine running or engine
damage may occur.
The slave lash can be adjusted only on cylinders
where the exhaust valves are fully closed. Once
these cylinders are complete the engine will
need to be rotated to set the remaining cylin-
ders.
Locate the cylinders which have fully closed
exhaust valves. Turn the slave adjusting screw
clockwise to zero lash and then turn the screw
one additional turn and wait one minute before
proceeding. Zero lash is no clearance between
the end of the slave fork and the crosshead.
(This is important because the adjusting screw
has a spring loaded plunger which must be com-
pressed to attain the correct lash.)
Once zero lash is attained, back the screw out
to allow enough clearance to insert the special
.023" feeler gage between the slave piston and
the crosshead, turn the screw clockwise to at-
tain .023" clearance. Torque adjusting screw
lock-nut to 25 lbs. ft. (35 Nm). Remove and then
reinstall feeler gage, if done correctly the lash
will be unchanged. If lash has changed, readjust
until it remains constant.
Rotate the engine to the next valve set marks,
repeat on remaining cylinders until all 6 cylinders
have been done. Double check slave lock-nut
torque. Do not exceed the adjusting screw
torque of 25 lbs. ft. or screw failure will result.
S L A V E L A S H A D J U S T M E N T-
D I A L I N D I C AT O R M E T H O D .
The engine must be cold (below 140F (60C))
to attain the proper lash of .023". Do not adjust
the slave lash with the engine running or engine
damage may occur.
Turn adjusting screw clockwise to zero lash,
then past zero lash one additional turn, wait one
minute before proceeding, then back out screw
to attain zero lash. Zero lash is no clearance
between the end of the slave fork and the cross-
head. (This is important because the adjusting
screw has a spring loaded plunger which must
be compressed to attain the correct lash.)
I N S TA L L AT I O N M A N U A L - L2039 PG. 4
P-14A and P-14B - Cummins N-14
Once zero lash is attained, install a dial indicator
on the top of the adjustment screw, zero the dial
indicator, then back out the screw slowly until
.023" is read on the dial indicator. Torque lock
nut to 25 lbs. ft. (35 Nm).
Rotate the engine to the next valve set marks,
repeat on remaining cylinders until all 6 cylinders
have been done. Double check slave lock-nut
torque. Do not exceed the adjusting screw
torque of 25 lbs. ft. Screw failure will result.
Connect Pacbrake wiring harness to the lead out
7 terminals and to the weather-pac connector.
Bleeding Air From The
Pacbrake Housings.
Note: Use caution and wear eye protec-
8 tion when performing this step as oil from
the control valve towers will be discharged
when the solenoids are released.
Check all components removed to see if the
engine can be started without causing any dam-
age. If so, start the engine. Allow engine to idle
for a couple of minutes, depress the armature
on each solenoid one at a time until the air is
purged from the housings.
Install valve cover gaskets and valve covers.
9 Torque valve cover capscrews to 9 lbs ft (12
Nm)
Install all previously removed components.
I N S TA L L AT I O N M A N U A L - L2039 PG. 5
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