Wrangler L4-150 2.5L VIN H TBI (1986)
Camshaft: Service and Repair
Installation
1.
Lubricate the camshaft with AMC Engine Oil Supplement (EOS), or equivalent. Install the camshaft carefully to prevent damaging the camshaft
bearings.
2.
Turn the tensioner lever (1) to the unlocked (down) position. Pull the tensioner block (2) toward the tensioner lever to compress the spring. Hold
the block and turn the tensioner lever to the locked (up) position.
3.
Install the timing chain, crankshaft sprocket and camshaft sprocket with the timing marks (A) aligned.
NOTE: To verify correct installation of the timing chain, turn the crankshaft to position the camshaft sprocket timing mark at approximately the
one o'clock position. This positions the crankshaft sprocket timing mark where the adjacent tooth meshes with the chain at the three o'clock
position. Count the number of chain pins between the timing marks on both sprockets. There must be 20 pins.
4.
Install the camshaft sprocket retaining bolt and tighten with 50 ft. lbs. (68 Nm) torque. Install the crankshaft oil slinger.
5.
Install the timing case cover and a replacement oil seal. With the key inserted in the keyway on the crankshaft, install the vibration damper,
washer and bolt. Lubricate and tighten the damper bolt with 80 ft. lbs. (108 Nm) torque.
NOTE: If the crankshaft turns before the damper bolt tightening torque value is attained, the crankshaft can be prevented from turning by placing
(2) 5/16 x 1 1/2 inch bolts into the damper pulley holes and wedging a bar between them. Rotate the bar until it contacts the frame member to
prevent the crankshaft from turning.
6.
Install the damper pulley and the fan assembly and shroud.
7.
Install the drive belt(s) and tighten to the specified tension. Install the fuel pump.
8.
Rotate the crankshaft until number 1 piston is at the TDC position on the compression stroke.
