159579-6220 ZEXEL 9 421 621 492 BOSCH ACTUATOR 9421621492 1595796220

start by:a) remove valve covers and bases Hoods and engine side panels and doors are removed for photo purposes only. 1. Use tool (A) to disconnect the fuel line assemblies from the cylinder head.2. Disconnect fuel line assemblies (1) from the fuel injection valves and remove them from the engine. Install covers on all fuel line connections to keep dirt or foreign material out of the fuel system. 3. Remove nut (2) that holds the fuel injection valve to the adapter assembly. 4. Use tool (B) to remove the fuel injection valves.5. If the fuel injection valves can not be removed with tool (B), use tooling (C). 6. Remove nozzle assembly (3) from body (4).7. Remove seal (5) from the body.Install Fuel Injection Valves
1. Use tool (A) to install seal (2) on valve body (1). 2. Install nozzle assembly (3) on the valve body. Tighten nozzle finger tight only.3. Put a small amount of clean diesel fuel on the seal and install the fuel injection valves in the adapter assemblies.4. Install the nut that holds the fuel injection valves and tighten to a torque of 55 5 lb.ft. (75 7 N m). 5. Remove the covers from the fuel line connections. Put fuel line assemblies (4) in position on the engine. Use tool (B) to tighten the fuel line nuts on the cylinder head adapter assembly. 6. Use tool (C) to tighten fuel line nuts to a torque of 30 5 lb.ft. (40 7 N m).end by:a) install valve covers and bases