The NP271 and NP273 are used in both Fords and Dodges pickup
trucks and known for their size and strength. The 271 is manually shifted and
the 273 is electronically shifted.
Since the New Process 273 is an electric shift transfer case
it has a shift motor or an actuator which means it has a harness to supply
electricity and information to the vehicles computer. It is possible for the connections to have
moisture issues if submerged in water and should be checked for
oxidation, rust and other related issues.
The front drive shaft is a common cause to a broken front
case half. A worn cv joint in the drive shaft causes it to spin with a whipping
action that can result the case to break. If repairing or maintaining the unit
inspect the cv joint, mounts and cross member to make sure all are in good
working order.
Although there are many similarities in this transfer cases differences do exist. If a case half needs to be ordered, locate the casting
number in order to determine the correct part number. Bearing kits and seal
kits are different for the Dodge (BK485A / TSK273D) and the Ford (BK485 /
TSK273).
And if you need to replace the case in your Ram 2500, 3500, F250, F350 or F450 with a reman unit,
we can help with that too.
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