E 250 Van V8-7.3L DSL (1988)
Fuel Injector Line: Service and Repair
REMOVAL
NOTE:
Before removing any fuel lines, clean exterior of each nozzle assembly and surrounding area with solvent to prevent entry of dirt into fuel
system when fuel lines are removed. Blow dry with compressed air.
1.
Disconnect ground cables from both batteries.
2.
Remove engine cover.
3.
Remove air cleaner and cap intake manifold opening with intake manifold cover.
4.
Disconnect accelerator cable and speed control cable if so equipped, from injection pump.
5.
Remove accelerator cable bracket from intake manifold and position out of the way with cable(s) attached.
NOTE:
To prevent fuel system contamination, cap all fuel lines and fittings with fuel system protection cap set.
6.
Disconnect fuel line from fuel filter to injection pump and cap all fittings.
7.
Disconnect and cap nozzle fuel lines at nozzles.
8.
Remove fuel line clamps from fuel lines to be removed.
9.
Remove and cap injection pump inlet elbow.
10.
Remove and cap inlet fitting adapter.
Injection Pump Cylinder Number Sequence
11.
Remove injector nozzle lines, one at a time from injection pump using fuel line nut wrench.
NOTE:
Fuel lines must be removed following this sequence; 5-6-4-8-3-1-7-2. Install caps on each end of each fuel line and pump fitting as it is
removed and identify each fuel line accordingly.
INSTALLATION
NOTE: Refer to SPECIFICATIONS for torque values.
1.
Install fuel lines on injection pump, using fuel line nut wrench, one at a time, and tighten.
NOTE:
Fuel lines must be installed in the sequence: 2-7-1-3-8-4-6-5.
2.
Clean old sealant from injection pump elbow, using clean solvent, and dry thoroughly.
3.
Apply a light coating of Pipe Sealant With Teflon on elbow threads.
4.
Install elbow in injection pump adapter and tighten. Tighten further, if necessary, to align elbow with injection pump fuel inlet line, but do not
exceed 360 degrees of rotation.
5.
Remove caps from fuel lines and connect to nozzles. Tighten, using fuel line nut wrench.
6.
Uncap and connect fuel line from fuel filter to injection pump and tighten.
7.
Install fuel line retaining clamps and tighten.
8.
Install accelerator cable bracket onto intake manifold and tighten.
9.
Connect accelerator and speed control cable, if so equipped, to injection pump throttle lever.
10.
Remove intake manifold cover, and install air cleaner and tighten.
11.
Install engine cover.
12.
Connect ground cables to both batteries.
13.
Run engine and check for fuel leaks.
14.
If necessary, purge high pressure fuel lines of air by loosening connector one-half to one turn and cranking engine until bubble-free fuel flows
