ENGINE BRAKES

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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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