ROCKER ARM GP 4373872 - Caterpillar

START BY:a. remove valve covers 1. Turn the crankshaft with tool (C) until there is no pressure on rocker arm (2).2. Separate arm (2) and push rod (1) with tool (A). Remove the push rod. 3. Remove valve lifter (3) with tool (B).4. Remove spring (4) from lifter (3).Install Push Rods And Valve Lifters
Install new guide springs on the valve lifters any time the lifters are removed from the engine.
1. Install a new spring on the valve lifter with tooling (A) and a soft hammer.2. Remove lifter from holder (1) [which is part of tooling (A)]. Put tool (C) in position in the handle of tooling (A).3. Put clean engine oil on the lifter. Put lifter (2) into position in the cylinder block with spring (3) in alignment with the hole in the block. Push the lifter out of tooling (A) with tool (C). 4. Install push rods (4). Use tool (B) to connect rod (4) and rocker arm (5).END BY:a. install valve covers