Grand Cherokee 2WD V8-4.7L VIN J (2004)
Inspect the valves and plugs (Fig. 132) for scratches, burrs, nicks, or scores. Minor surface scratches on steel valves and plugs can be removed with
crocus cloth but do not round off the edges of the valve or plug lands. Maintaining sharpness of these edges is vitally important. The edges prevent
foreign matter from lodging between the valves and plugs and the bore.
Inspect all the valve and plug bores in the valve body. Use a penlight to view the bore interiors. Replace the valve body if any bores are distorted or
scored. Inspect all of the valve body springs. The springs must be free of distortion, warpage or broken coils.
Trial fit each valve and plug in its bore to check freedom of operation. When clean and dry, the valves and plugs should drop freely into the bores.
Valve body bores do not change dimensionally with use. If the valve body functioned correctly when new, it will continue to operate properly after
cleaning and inspection. It should not be necessary to replace a valve body assembly unless it is damaged in handling.
Inspect all the accumulator bores in the valve body. Use a penlight to view the bore interiors. Replace the valve body if any bores are distorted or
scored.
Inspect all of the accumulator springs. The springs must be free of distortion, warpage or broken coils.
