Chrysler 53021556BB PUSHROD-Intake Valve

In order to take off the valve covers on the cylinder heads, loosen the rocker arm shaft bolts by first unbolting the middle ones to outer ones. Fully loosen the bolts and pull up rocker shaft assembly from off of the cylinder head. Keep track of rocker arm positions and store each set of rockers so that they can be reinstalled in their original positions. Remove push rods and store them in a way that prevents mixing them up at installation time. When examining the rocker arms, search for wear, cracks, and other types of damages particularly where it comes into contact with both pushrods as well as valve stems. Similarly, look at the rocker arm bores and shafts for any signs of stress cracks, galling or wear patterns that are not usual. Any worn out or damaged parts should be replaced with new ones including installing new shafts as well. Make sure there is an opening at each end hole part of all rocker arms' pushrods. Examine push rods for end cracks excessive wear; also check them by running across a plate glass to see if they are bent or rolled. To lubricate lower ends before replacing in lifter socket put clean engine oil or engine assembly lube on lower end of each pushrod; this will ensure that they seat properly in their original places when installed again.Apply some engine assembly lube to protect valve stem ends and upper portion of stem from damage during initial start-up process. At first lubricate most components present on top sides such as upper ends for push rods together with valve stem bottoms using either pure old engine oil or brand new motor assembly greases hence avoiding knocks while starting up your vehicle for instance Rocker arm has being fully oiled using either just refined old motor oil or absolutely unused motor grease with complete assemble back onto cylinder heads through which it is expected must have gone through full application treatment.Tighten center bolt first then followed by center right bolt, center left bolt, outer right bolt, and finally the outer left bolt for rocker arm shafts. Tighten bolts, making sure that as the tightening process is proceeding push rods are properly seat in rocker arms. If such conditions develop where rocker arm bolts start becoming tight before shaft has been completely seated or else push rods are binding; all rocker arm shafts must be removed followed by totally checking all components before taking next action. Lastly install valve covers and start the engine to listen for unusual sounds from valve train and observe oil leaks at valve cover gaskets.

In order to take off the valve covers on the cylinder heads, loosen the rocker arm shaft bolts by first unbolting the middle ones to outer ones. Fully loosen the bolts and pull up rocker shaft assembly from off of the cylinder head. Keep track of rocker arm positions and store each set of rockers so that they can be reinstalled in their original positions. Remove push rods and store them in a way that prevents mixing them up at installation time. When examining the rocker arms, search for wear, cracks, and other types of damages particularly where it comes into contact with both pushrods as well as valve stems. Similarly, look at the rocker arm bores and shafts for any signs of stress cracks, galling or wear patterns that are not usual. Any worn out or damaged parts should be replaced with new ones including installing new shafts as well. Make sure there is an opening at each end hole part of all rocker arms' pushrods. Examine push rods for end cracks excessive wear; also check them by running across a plate glass to see if they are bent or rolled. To lubricate lower ends before replacing in lifter socket put clean engine oil or engine assembly lube on lower end of each pushrod; this will ensure that they seat properly in their original places when installed again.Apply some engine assembly lube to protect valve stem ends and upper portion of stem from damage during initial start-up process. At first lubricate most components present on top sides such as upper ends for push rods together with valve stem bottoms using either pure old engine oil or brand new motor assembly greases hence avoiding knocks while starting up your vehicle for instance Rocker arm has being fully oiled using either just refined old motor oil or absolutely unused motor grease with complete assemble back onto cylinder heads through which it is expected must have gone through full application treatment.Tighten center bolt first then followed by center right bolt, center left bolt, outer right bolt, and finally the outer left bolt for rocker arm shafts. Tighten bolts, making sure that as the tightening process is proceeding push rods are properly seat in rocker arms. If such conditions develop where rocker arm bolts start becoming tight before shaft has been completely seated or else push rods are binding; all rocker arm shafts must be removed followed by totally checking all components before taking next action. Lastly install valve covers and start the engine to listen for unusual sounds from valve train and observe oil leaks at valve cover gaskets.

To do this you will need to remove the valve covers from the cylinder heads and the bolts that hold the rocker arm shafts in place and these bolts are the center bolts followed by the bolts at the extremity of the rocker arm shafts. After the last nut is fully loosened, carefully lift the rocker shaft assembly off of the cylinder head, being sure note the position betwen the upper intake and lower exhaust rocker arms so that they can be reassembled in their original orientation. Rocker arm positions should be recorded in order to reinstall them in the correct position; each set of components should be replaced and stored as they were found; and the pushrods should be removed and stored in an order to avoid crossing them up. It is important for one to note that exhaust pushrods are a little longer than intake pushrods not interchangeable. If the cylinder heads have been machined to a standard of flatness then it is crucial to 'shorten' the appropriate length pushrods to cover the now shorter distances of the rocker arms to the camshaft dimensions, unless consulting with a machine shop. For each rocker arm, check if there is wear, cracks, and damage on the surface that comes into contact with pushrods and or valve stems, and the rocker arm shafts and the bores should also be checked to establish if they have worn out and or damaged, a worn out or damaged part must be replaced. There must be free passage into the hole at the pushrod end of each rocker arm; bears checking for crackline and abnormal wear, pushrods can be rolled across a flat surface to check for bend. Coat the lower end of each pushrod with clean engine oil or assembly lube and install these into their original position and ensure that it seals fully into the lifter socket. Coat the valve stems and the upper ends of the pushrods with assembly lube for protection of any mating surfaces during initial start up, then lubricate the rocker shafts, the rocker shaft assembly should have all components located in their original positions before being installed in to the head of the cylinder. Tighten the rocker arm shafts beginning with the centre bolt, in a preset sequence till the appropriate torque is secured so that the pushrods fit tightly in the rocker arms. If bolts when installed appear light before the shaft is seated or if pushrods bind, all the components inside should be examined. Last, put the valve covers back on, crank up the engine, scan for valve train rattles and knock and look for oil leaks at the gaskets.

First, take out and examine rocker arms and pushrods after removing the valve covers from cylinder heads. So, get yourself special pushrod retainer tool #9070 or its equivalent to ensure that the pushrods remain in place. Go on gradually loosening the rocker arm shaft bolts off starting with center bolts towards end. To remove this fully, lift the entire rocker shaft assembly off the cylinder head keeping in mind that retainers must remain under bolt head. Therefore keep record of every rocker arm posture since it is required to put them back to their original position. The intake rockers are marked "I" so store each set of rocker components correspondingly. Remove and put away push rods to hold them onto their initial positions as they were before removal or disassembling for maintenance purposes. Nevertheless remember that exhaust push-rods are a little bit longer than intake ones and cannot be replaced between themselves . In addition check each rocker arm for wear, cracks or damage especially where they contact the pushrods and valve stems during inspection periods. Also check for wear, galling, stress cracks, or unusual wear patterns on rocker arm shafts and bores of the arms themselves. Replace any worn or damaged rocker arms and shafts immediately . Never attempt to take out these retainers unless it becomes necessary because they can break down into your engine system. If a retainer breaks defeat it from the rocker arm shaft prior to reassemblying then install rockers again when broken . The last thing is installing/fitting/inserting/lodging both ends of all (the) pushrods; lubricate these pieces , apply engine assembly lube to valve stem ends/upper end portion/surface of valve stem along with top end surfaces of push rods; lubricate the rockershaf and install/co-locate/place/push together again other parts including such as valves in each original position on each head in which case the shaft of rockers is assembled. Sequence and torque the rocker arm shaft bolts to specification at several steps taking care that push - rods are seated properly. Finally put on valve covers, start the engine, and check for any unusual noises from or oil leaks around O-rings.

Disconnect the wires from the batteries at their negative terminals. Then remove the valve cover. Mark and detach the rocker arm/pedestal assemblies. Mark and take off crossheads. Pin down rocker arm sockets before raising them out of cylinder head. Mark and remove pushrods. Remove, clean with solvent, and disassemble rocker arms, pedestals, and shafts parts. Check for debris by blowing through oil passages. Get each rocker shaft bearing surface inspected for replacement if necessary.Measure each inside diameter of rocker arm bore against each outside diameter of rocker shaft and replace if worn too much.Check for cracks and scoring on all pushrod balls and ball seats, replacing any that are damaged.Look for damage or excessive wear on all crossheads in which case those affected should be replaced.Place the pushrods into position lubricate valve tips then put in place crossheads.Re-lubricate the bores , rockershafts then recapitulate the assembly of rockershaft/rockerarm/pedestal.Ensure lubrication of both crossheads as well as those sockets receiving a pushrod are done then fix a set of rockerarm/pedestal.The process ends by checking valve clearance.Installation of valve cover here may take place where it is not already installed.

Disconnect the wires from the batteries at their negative terminals. Then remove the valve cover. Mark and detach the rocker arm/pedestal assemblies. Mark and take off crossheads. Pin down rocker arm sockets before raising them out of cylinder head. Mark and remove pushrods. Remove, clean with solvent, and disassemble rocker arms, pedestals, and shafts parts. Check for debris by blowing through oil passages. Get each rocker shaft bearing surface inspected for replacement if necessary.Measure each inside diameter of rocker arm bore against each outside diameter of rocker shaft and replace if worn too much.Check for cracks and scoring on all pushrod balls and ball seats, replacing any that are damaged.Look for damage or excessive wear on all crossheads in which case those affected should be replaced.Place the pushrods into position lubricate valve tips then put in place crossheads.Re-lubricate the bores , rockershafts then recapitulate the assembly of rockershaft/rockerarm/pedestal.Ensure lubrication of both crossheads as well as those sockets receiving a pushrod are done then fix a set of rockerarm/pedestal.The process ends by checking valve clearance.Installation of valve cover here may take place where it is not already installed.