Index Chrysler Chrysler Town & Country/Voyager, Dodge Caravan, Plymouth Voyager - service repair manual 1992 year
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inder head or camshaft, it is necessary to be certain Cylinder Head: Top of bearing caps painted green and O/SJ stamped rearward of oil gallery plug on end Camshaft: Barrel of camshaft painted green and O/SJ stamped on end of shaft. CLEANING Remove all gasket material from cylinder head and block. Becareful not gouge or scratch aluminum head INSTALLATION CAUTION: Head bolt diameter is 11mm. These bolts Since the Cylinder head bolts are torqued us- ing a new procedure they should be examined Necking can be checked by holding a scale or straight edge against the threads. If all the threads do not (1) Position new head gasket on the cylinder block. shown in (Fig. 16). Using the 4 step torque turn • Second All to 88 NIm (65 ft. lbs.) • Third All (again) to 88 NIm (65 ft. lbs.) • Fourth + 1/4 Turn Do use a not torque wrench Bolt torque after 1/4 turn should be over 90 ft. lbs. If not, replace the bolt. (3) Rotate dipstick tube on bracket. Im (200 in. lbs.). (5) Install cylinder head cover and curtain. Refer to cover sealing of this group for procedure. VALVE SERVICE—CYLINDER HEAD REMOVED VALVES AND VALVE SPRINGS REMOVAL (1) With cylinder head removed, compress valve springs using Tool C-3422-B. (2) Remove valve retaining locks, valve spring re- tainers, valve stem seals and valve springs. (3) Before removing valves, remove any burrs from valve stem lock grooves to prevent damage VALVE INSPECTION (1) Clean valves thoroughly and discard burned, warped and cracked valves. (2) Measure valve stems for wear. inch.) replace valve. VALVE GUIDES (1) Remove carbon and varnish deposits from inside of valve guides with a reliable guide cleaner. (2) Checking Valve Guide Wear: • Insert valve with valve head positioned 10 mm (.400 (3) Service valves with oversize stems and oversize seals are available in 0.15mm, (.005 inch) 0.40mm, Oversize seals must be used with oversize valves. Reamers sizes to accommodate the oversize valve stem are shown in (Fig. 18). (4) Slowly turn reamer by hand and clean guide thoroughly before installing new valve. Do not at- Fig. 15 Checking Bolts for Stretching (Necking) Fig. 16 Cylinder Head Tightening Sequence . 2.5L ENGINE 9 - 23 |