How do you change lifters on 91 jeep?

To change the lifters on a 1991 Jeep, first, remove the intake manifold and valve covers to access the rocker arms. Next, carefully take off the rocker arms and pushrods, noting their order for reassembly. You can then remove the old lifters from the engine block and replace them with new ones, ensuring they seat properly. Reassemble the components in the reverse order, making sure to torque everything to the manufacturer's specifications.