Jeep 1987 Wrangler Workshop Manual page 366

18 18
42 LITER (258 CID) SIX-CYLINDER ENGINE
S E E
I.S.
N
O
T
E
S
Rotate the crankshaft until the zero timing mark
on the crankshaft sprocket (1) is closest to and
on the centerline with the timing mark on the
camshaft sprocket (1).
86210
Remove the crankshaft sprocket, camshaft
sprocket and timing chain as an assembly
(B).
Disassemble the chain and sprockets.
86177
TIMING CHUN INSTALLATION
Assemble the timing chain, crankshaft sprocket
and camshaft sprocket with the timing marks (1)
aligned.
86210
With the key in the keyway on the crankshaft,
install the assembly on the crankshaft and
camshaft.
Install the camshaft sprocket retaining bolt and
washer and tighten with 108 N-m (80 ft-lbs)
torque.
NOTE: To verify the correct installation of the
timing chain, turn the crankshaft to locate 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 (2) on both
sprockets. There must be 15 pins.
B-132