NMWR-9-2815-220 Overhaul Manual for M60 M88 Engine AVDS-1790-2CA, AVDS-1790-2DA, AVDS-1790-2DR Download
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NMWR 9-2815-220 AUTOMATIC INJECTION ADVANCE ASSEMBLY OVERHAUL—Continued 0019 00 TESTING – Continued (g) Loosen fasteners and remove fuel injection pump drive housing cover from top of test stand. Remove the two bearing caps (Figure 4) and intermediate bearing support from the mounting fixture. ADJUSTING BEARING RING CAP BEARING SUPPORT ADVANCE UNIT COTTER PIN ASSEMBLY AND SLOTTED NUT Figure 4. Fuel Injection Pump Advance Assembly Mounting Points. (h) Install retaining ring on test stand oil retaining shaft. Install short (stub) end of oil retaining shaft in driven (small) end of the advance assembly. Install support over bearing on large gear end of advance assembly and install advance assembly in bearing supports of mounting fixture and secure with hardware removed above. Install drive housing cover and secure with fasteners. CAUTION The fuel injection pump advance assembly drive housing cover must always be installed and secured before operating test stand. (i) Push jog run (clutch engage) switch (item 11, Figure 3) to engage eddy current clutch and turn speed regulator control (item 10, Figure 3) to obtain advance assembly speed of 300 rpm on tachometer. Turn speed regulator control clockwise to increase rpm. (j) Observe oil and fuel pressure indicator gages (items 1 and 2, Figure 3). These gages should register more than zero (0); however, maximum pressures will not be evident until a speed of 1400 rpm is obtained. A minimum oil pressure of 30 ± 2 psi shall be obtained at speeds of 1400 rpm and above. 0019 00-6 Change 1