Section I. INTRODUCTION AND DESCRIPTION
1. Introduction. This manual contains descriptive information, operation, and service instructions for
diesel fuel injector nozzle tester (model DT-1300) accessories (fig 1).
2. Purpose. The tester is designed to measure the opening pressure of fuel injector nozzles and to check
the fuel spray pattern being dispersed from the Nozzle tip holes. In addition, the tester can check fuel
leakage of nozzles and fuel injection pump heads.
3. Description. The tester and accessories are contained in a metal carrying case. The tester housing is of
cast aluminum, providing lightweight transportability. This housing contains a reservoir for holding
calibration fluid. A handle is provided to pump the fluid from the reservoir to a nozzle under test. The
two valves are used while checking nozzle opening pressure and for performing leak test. A pressure
gage, with a range of 0 to 5000 psi, is provided to measure the opening and leakage pressures. The pump
output capacity is 1300mm3 (1.3 cc) per stroke at 7500 psi.
4. Identification of Components and Accessories. Table 1 and figure 1 identify components furnished
with the tester: nozzle tester (model DT-1300) and accessories.