ROBERT BOSCH MODEL MW INJECTION PUMP - CONT

ROBERT BOSCH MODEL MW INJECTION PUMP - CONT - TM-5-3820-256-24-5_352

ROBERT BOSCH MODEL MW INJECTION PUMP - CONT - TM-5-3820-256-24-5_354

TM-5-3820-256-24-5 Drilling System Well Rotary Truck Mounted Air Transportable 600 Feet Capacity Model LP-12 NSN 3820-01-246-4276 Manual
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SERVICE MANUAL ROBERT BOSCH MODEL MW INJECTION PUMP Section 11 BARREL AND PLUNGER Components One barrel and plunger assembly for each engine cylinder mounts to the injection pump housing. Each barrel flange which contains two slotted holes is positioned over two pump housing studs and is secured with two flat washers, lock washers and nuts. Threaded into the top of the barrel is the delivery valve holder (Figure 10). The delivery valve gasket, delivery valve, delivery valve spring and washer are installed into the upper barrel bore prior to the installation of the delivery valve holder. An "O" ring on the delivery valve holder acts as a dust seal to prevent foreign material or liquids from entering the delivery valve holder threads. When the injection pump is assembled, shims are inserted around the number one housing studs and between the pump housing and number one cylinder barrel flange to establish the specified plunger lift to port closure. These shims are available in various thicknesses. Figure 10. - Barrel and Plunger Components CGES-185-3 PRINTED IN UNITED STATES OF AMERICA Page 9

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