Section 2 DIAGNOSTIC ANALYSIS b. Inspect  all  linkage  for  full  travel  from  high idle     stop     to     low     idle     stop     under     all conditions    of    operation.        Make    certain operation  of  vehicle  is  not  changing  these adjustments.  Verify high idle. c. Inspect override at wide open throttle.  (See NOTE). NOTE:          Throttle     override     is     the adjustment made  at  the  throttle  lever which    compensates    for    wear    that occurs    in    throttle    linkage    and    for chassis movement. If throttle override     is     not     maintained,          full throttle  and  consequently,  maximum performance will not be available. d. Measure transfer pump pressure . • Change filters • Check for fuel inlet restriction or • Replace transfer pump if necessary. e. Measure air cleaner restriction. • Service air cleaner element(s) as necessary. f. Check   injection   pump   timing   and   correct injection pump on engine. • 400-SERIES  with  UTDS  Model  100  Pump visual check/Flow Time and Dynamic check using (3005, 3005A or SE-2783) CREATIVE  TOOL  TACH/  TIME  KIT  w/14 mm split-nut transducer or Sun TACH/TIME KIT (PLT-301 or SE-2528) • 400-SERIES with Robert bosch MW Pump - visual pointer inspection. • 9.0 LITER - visual pointer inspection/ Flow Time. • 6.9   LITER    visual    check/Dynamic    check using SE-4142 Kent-Moore TACH N' TIME TM   ,   Creative   Tool   SE-2783   or   Design Technology Tech-Time Model 3354. g. Loss of one cylinder. • Check for plugged injection line. • Check nozzle operation. h. 400 SERIES (Turbocharged Engines only) • Pressurize  intake  system  and  inspect  for leaks  at  line  between  intake  manifold  or crossover and injection pump aneroid.    Air leakage  may  occur  at  line  connectors  or pump or manifold.  During engine operation leaks at the connectors can cause manifold pressure   to   be   reduced   at   the   aneroid which  allows  injection  pump  to  operate  in "cut     back"     or     reduced     power     level. However,  slight  manifold  pressure  leakage is allowable on pressure side  of  the  intake system,    such    as    at    the    turbocharger compressor  housing,  as  long  as  manifold pressure meets Performance Data Guidelines. • Test aneroid diaphragm by applying (15 psi max.)  air  pressure,  using  D-100  Test  Kit, for 30 seconds.  If leakage occurs,  replace diaphragm.    Low  power  and  low  manifold pressure   will   result   if    diaphragm    leaks because   injection   pump   will   stay   in   "cut back" position. CGES-240-4 Printed in United States of America Page 4