Engine: Service and Repair

Engine lubrication:

E-250---350
1. Disconnect battery ground cables and remove engine cover.
2. Drain cooling system, then remove front bumper, grille assembly and gravel deflector.
3. On models equipped with speed control, unfasten speed control servo bracket and position aside.
4. On all models, scribe hood latch location, then remove latch and cable assembly from grille upper support bracket.
5. Remove upper grille support.
6. On models equipped with A/C, discharge refrigerant from system, then remove A/C condenser.
7. On all models, disconnect transmission oil cooler lines from oil cooler and radiator, then remove oil cooler with mounting brackets.
8. Disconnect radiator hoses from engine, then remove fan shroud, fan and radiator. The fan retaining nut has left hand threads.
9. Remove vacuum pump and drive belt, then disconnect vacuum line from transmission modulation pipe.
10. Remove alternator adjusting arm, adjusting arm bracket and drive belt, then pivot alternator inward toward engine.
11. Disconnect alternator electrical connectors from alternator and fuel line heater.
12. Disconnect water temperature sender electrical connector from left front of cylinder block.
13. Disconnect water temperature overheat lamp switch electrical connector from top front of left cylinder head.
14. Remove engine ground cables from bottom front of engine.
15. On models equipped with power steering, remove steering pump and bracket, then disconnect and plug return line from steering pump and position pump aside.
16. On models equipped with A/C, disconnect refrigerant lines from A/C compressor.
17. On all models, disconnect vacuum hose between injection pump and vacuum regulator valve and position aside.
18. Disconnect and cap fuel heater inlet line from fuel filter and fuel pump.
19. Remove air cleaner and intake duct and place a suitable cover over intake manifold opening.
20. Disconnect and cap fuel filter outlet line from fuel filter and injection pump, then cover the injection pump and fuel filter openings.
21. Remove fuel filter return line, then the fuel filter and bracket as an assembly.
22. On models equipped with A/C, loosen A/C compressor mounting bolts and rotate compressor toward engine.
23. On all models, disconnect and plug fuel inlet line at fuel pump.
24. Disconnect accelerator and speed control cables, if equipped from injection pump and bracket on intake manifold and position aside. Remove cable bracket.
25. Disconnect engine wiring harnesses and position aside.
26. Remove transmission kickdown rod, then disconnect heater hose from water pump and right cylinder head.
27. On models equipped with A/C and/or auxiliary heater, remove hoses from bracket at left rear of engine.
28. On all models, disconnect oil pressure sender electrical connector from rear of engine.
29. Disconnect fuel return line from left rear of engine, then remove transmission oil dipstick tube attaching bolt from rear of right cylinder head.
30. Remove engine oil dipstick and tube.
31. Remove ground cable to cylinder block attaching bolt, then the 4 upper transmission-to-engine attaching bolts.
32. Raise and support vehicle.
33. Remove engine mount attaching nuts, then disconnect exhaust pipe from exhaust manifolds.
34. Remove converter inspection plate, then the 4 converter to flywheel attaching nuts.
35. Remove starter cable, then move fuel, line on No. 1 crossmember down and aside.
36. Lower vehicle and attach suitable lifting equipment to engine.
37. Support transmission with a suitable jack and remove remaining engine to transmission attaching bolts.
38. Separate engine from transmission, then raise engine high enough to clear No. 1 crossmember. Move engine forward and remove from vehicle.
39. Reverse procedure to install.