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- TRANSMISSION - E4OD - COOLER BYPASS VALVE SERVICE DURING TRANSMISSION OVERHAUL - SERVICE TIP
| Publication Date: FEBRUARY 17, 1997 |
| 1997 ECONOLINE, EXPEDITION, F-150, F-250 LD |
E4OD transmissions have been equipped with an external Cooler Bypass Valve (CBV) (Figure 1) on some vehicles. The CBV allows some transmission fluid to bypass the transmission fluid coolers and return to the transmission sump during cold weather operation. This provides faster transmission fluid warm up and increased lube flow during cold weather operation.
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