ENGINE DIAGNOSTIC TEST PROCEDURESSection 6•FUEL ANEROID DIAPHRAGM400 Series On-Highway(with Robert Bosch MW Pumps)FROM FORM NO. CGED-365ANEROID DIAPHRAGM13PRESSURE TEST DIAPHRAGM (20 PSI MAX - FOR 30 SECONDS) NO LEAKAGEPERMISSIBLE.INSTRUMENTGUIDELINE DATA‚1st CHECK2nd CHECKD-100 PRESSURE KIT(SE-2239)pRefer to "Performance Data Guidelines", in this section.Test for leakage as follows:1.Remove intake manifold to aneroid line at aneroid.2.Connect fitting and plastic tubing to Pressure Test Kit(SE-2239). Use 0-30 psi gauge.3.Pressurize diaphragm housing to 20 psi max. for 30seconds. (See Figure 27.)4.No leakage is acceptable. Record whether aneroidleaks. Injection pump must be removed ifdiaphragm leaks because full load stop must be seton injection pump test bench.Figure 27. Aneroid Diaphragm Leakage TestFor Robert Bosch MW PumpCG ES-240-4Printed in United States of AmericaPage 37
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