855464 Mercruiser COVER ASSEMBLY

Illustration 1 g00308903
Fuel injection nozzle
(1) Connection for the union nut of the fuel supply line
(2) Threaded hole for the banjo bolt of the leak off line
(3) Clamp
(4) Seal
(5) Spacer
(6) Fuel injector assembly
(7) Seat washer (1) Tighten the union nut of the high pressure fuel line (not shown) to the following torque: ... 18 N m (13.3 lb ft) (2) Tighten the banjo bolts of the leak off tubing (not shown) to the following torque: ... 9.5 N m (84 lb in) (3) Tighten the flange bolts (not shown) for the clamp to the following torque: ... 12 N m (9 lb ft)Note: Remove the original seat washer from the threaded hole for the fuel injection nozzle which is located in the cylinder head. If the original seat washer is not removed, the projection of the nozzle will be incorrect when a new seat washer is installed. Do not reuse the seal (4) and the seat washer (7).Bench test the fuel injection nozzles at a temperature of 18 to 20 °C (64 to 70 °F).Note: Use clean SAE J-967 oil (ISO 4113) when you are conducting the test. The oil is available in 5 gallon containers ( 6V-6068 Calibration Fluid) and 55 gallon containers ( 6V-6067 Calibration Fluid). If dirty oil is used for the test, the components of the fuel injection nozzle will be damaged.Refer to Testing And Adjusting, "Pressure Adjustment, Back Leakage Test, Nozzle and Seat Test".
Table 1
Pressure Settings for the Fuel Injection Nozzles for the Type 1 Engines and 9RM Engines
Code(1) Pressure Setting
"HU" 22291 kPa (3233 psi)
"HV" 25331 kPa (3674 psi)
"HZ" 22291 kPa (3233 psi)
"JA" 25331 kPa (3674 psi)
"JB" 25331 kPa (3674 psi)
"JE" 22291 kPa (3233 psi)
"JF" 25331 kPa (3674 psi)
"JG" 23304 kPa (3380 psi)
"JH" 25331 kPa (3674 psi)
"JJ" 25331 kPa (3674 psi)
"JK" 22291 kPa (3233 psi)
"JL" 25331 kPa (3674 psi)
"JR" 25331 kPa (3674 psi)
"JS" 25331 kPa (3674 psi)
"JT" 25331 kPa (3674 psi)
"JU" 22291 kPa (3233 psi)
"JY" 25331 kPa (3674 psi)
"NJ" 22291 kPa (3233 psi)
"NK" 22801 kPa (3307 psi)
"NL" 22801 kPa (3307 psi)
"NM" 23304 kPa (3380 psi)
"NN" 23304 kPa (3380 psi)
"NP" 22291 kPa (3233 psi)
"NR" 23304 kPa (3380 psi)
"NS" 25331 kPa (3674 psi)
"NT" 23304 kPa (3380 psi)
"NU" 22291 kPa (3233 psi)
"NV" 22291 kPa (3233 psi)
"NW" 22291 kPa (3233 psi)
"RD" 25028 kPa (3630 psi)
"RE" 25028 kPa (3630 psi)
"RF" 25028 kPa (3630 psi)
"RH" 25028 kPa (3630 psi)
"RK" 26903 kPa (3902 psi)
"RM" 25028 kPa (3630 psi)
"RN" 25028 kPa (3630 psi)
"RP" 25028 kPa (3630 psi)
"RR" 25028 kPa (3630 psi)
"RS" 25028 kPa (3630 psi)
"RT" 25028 kPa (3630 psi)
"RU" 25028 kPa (3630 psi)
"RV" 25028 kPa (3630 psi)
(1) The code letters are stamped on the side of the fuel injector body. The code letters are located below the connection for the nut of the high pressure fuel line.Note: Ensure that the new fuel injection nozzles have the same identification code as the nozzles which were originally installed in the cylinder head.Leakage in 10 seconds ... 0 dropsType 2 Engines and 7BJ Engines
Note: For a complete description of Type 1 and Type 2 engines, refer to the Specifications Module, "Engine Design" for more information.
Illustration 2 g00293085
Fuel injection nozzle
(1) Connection for the union nut of the fuel supply line
(2) Threaded hole for the banjo bolt of the leak off line
(3) Nut of the fuel injection nozzle
(4) Wire clip
(5) Seat washer (1) Tighten the union nut of the high pressure fuel line (not shown) to the following torque: ... 22 N m (16 lb ft) (2) Tighten the banjo bolts of the leak off tubing (not shown) to the following torque: ... 9.5 N m (84 lb in) (3) Tighten the nut of the fuel injection nozzle to the following torque: ... 30 N m (22 lb ft)Note: When the fuel injection nozzle is installed, put a 2.0 mm (.08 inch) bead of 4C-5591 Anti-Seize Compound on the first two threads of