ENGINE DIAGNOSTIC TOOLS Section 4 BEYERS MODEL 100 PRESSURE TEST KIT (SE-2239) DESCRIPTION The   Pressure   Test   Kit   (Figure   12)   can   be   used   to measure intake manifold (boost) pressure, fuel pressure, air    cleaner    restriction,    exhaust    back    pressure    and crankcase    pressure,    however,    because    of    the    low maximum limit of crankcase pressure, the use of this kit is not recommended.  It may also be used to check the radiator cap and to test the accuracy of the gauges within the kit. Figure 12.  Pressure Test Kit The  0-15  psi  gauge  may  be  used  to  check  the  radiator cap.    The  hand  operated  pump  is  usually  connected  to the  0-15  psi  gauge.    By  rerouting  the  tubing  under  the panel, it may also be used for testing the accuracy of the gauges. The   0-30   psi   gauge   may   be   used   to   check   intake manifold (boost) pressure and fuel modulator diaphragm (Aneroid) leakage test.  Refer to SLF- 78-19 (ESB-78-10) when performing leakage test. The  0-60  inches  of  water  (magnahelic)  gauge  may  be used to measure air cleaner restriction and exhaust back pressure.    Although  crankcase  pressure  is  measured  in inches of water, the low maximum limit prohibits the use of this 0-60 inches of water. gauge.      The   water   manometer   is   recommended   for measuring crankcase pressure The   0-160   psi   gauge   is   normally   used   to   check   fuel pressure. The 0-300 psi gauge is not normally used for any engine diagnostic check. MAINTENANCE AND GAUGE ACCURACY TEST 1. Remove  cover  of  pressure  test  kit  and  inspect for   damage   to   gauges   such   as   broken   cover glass,    bent    gauge    needles,    and    for    missing pressure connectors and nylon tubing.  Replace damaged   or   missing   parts   so   that   the   kit   will operate when needed. 2. Remove   the   screws   holding   gauge   panel   to carrying case and lift panel from carrying case. If any  liquids  are  found  in  the  tubing  behind  the panel,  loosen  the  connections  and  blow  out  the liquids.    Tighten  all  connectors  as  required  and reassemble gauge panel. 3. The hand operated pump is directly connected to 0-15  psi  gauge  when  the  kit  is  received.    If  a gauge    accuracy    test    is    desired,    proceed    as described under "CALIBRATING THE PRESSURE   KIT   (SE-2239)   using   the   Dwyer Slack Tube® Manometer," in this section. OPERATING INSTRUCTIONS Connect tubes between the test ports on the panel and the test points shown in Section 5. CAUTION! The    quick    disconnects    have    shut-off valves in the panel connectors not in the plug.    DO  NOT  connect  or  disconnect lines while under pressure. NOTE:   When using the inches of water, magnahelic gauge,  be  sure  to  use  the  proper  panel  connector. Exhaust back pressure uses the "Pressure" connector    and    air    cleaner    restriction    uses    the "Vacuum"  connector.    In  both  cases,  the  opposite connector   MUST   be   vented   to   the   atmosphere   by installing a quick connective plug in the port. CGES-240-4 Printed in United States of America Page 17