There is no rocker arm assembly on a 1987 2.5 engine. Each valve has its own rocker, they are installed and adjusted one at a time.
Remove the valve cover. The rocker arm assembly can be removed by loosening the rocker arm screws. Each rocker arm will have a screw.
Unscrew the nut on top and lift off the rocker and swivel.
The push-rods go through from the rocker arm to the lifter. In this engine, they are on an angle, the lifter is not directly below the dimple in rocker arm. Place all push-rods on lifter, (after making sure the oil passage is clear) then install rocker arm assembly, be careful each pushrod is in the dimple, and carefully tighten rocker arm assembly, start in middle, go to ends, back to middle and work your way to ends, then go back again with a torque wrench and do all to spec.
No. The valve uses an hydraulic lifter that is built in the rocker arm assembly. The whole rocker arm has to be replaced.
you must remove the entire rocker arm assembly... inside each rocker is a little button lifter. that's the ones to be replaced... To set the entire rocker assembly back in place, you will need 4-5 hands to squeeze the springs and position the rockers over the valves
The Ford Ranger 4.0L OHV has a rocker arm assembly on pedestals, held down by 3 bolts. I torqued mine to 45-48 ft lbs. The original assembly was hard to unbolt.
22 foot/lbs
The function of a rocker arm is to control a valve in an engine. The rocker arm is a lever that rocks.
take valve covers off and then unloosen each rocker arm and pull the push rod out, install new push rod and install rocker arm back on and tighten down nut according to factory specs.
The function of a rocker arm is to control a valve in an engine. The rocker arm is a lever that rocks.
Each rocker arm has a bushing beneath the rocker arm screw. When the bushing is worn out, the rocker arm will continue to loosen up.
You compress the valve spring. I use a large screw driver to remove and install those rocker arms... its alot better then paying 40 dollars for the tool to do it, just make sure that the valve retaining pens r still in place when your done. Its really simple to install and remove. There is no bolt holding the rocker arm down, it is held in place with pressure from the cam shaft and valve spring.