Skylark L4-138 2.3L DOHC VIN D MFI QUAD 4 (1989)
Fig. 21 Camshaft Housing Bolt Tightening Sequence
Fig. 22 Camshaft Housing Cover Seal Installation & Identification
11.
Remove camshaft housing cover attaching bolts, Fig. 20.
12.
Loosen camshaft housing to cylinder head attaching bolts in reverse order of tightening sequence, Fig. 21.
13.
Leave two camshaft housing to cylinder head attaching bolts loosely installed. Thread four of the camshaft housing to cylinder head bolts into
tapped holes on camshaft housing cover to separate cover from housing.
14.
Remove the two camshaft housing to cylinder head bolts and remove camshaft housing cover.
15.
Note position of timing chain sprocket dowel pin for re-assembly, then remove camshaft, using care not to damage journals.
16.
Remove oil seal from camshaft. This seal must be replaced any time the cover and camshaft housing are separated.
17.
Remove valve lash adjuster. Keep valve lash adjusters in order for re-assembly. Store valve lash adjusters in the upside down position in clean
engine oil to prevent lifter bleed down.
18.
Remove camshaft housing and gasket from cylinder head.
19.
Reverse procedure to install. Prior to installation, lubricate camshaft journals and valve lash adjusters with lubricant No. 1052365 or equivalent.
Apply suitable sealant to threads of camshaft housing and cover retaining bolts and ignition coil and module assembly attaching bolts. When
installing camshaft housing cover to camshaft housing, refer to Fig. 22 for seal positioning. Torque camshaft housing and cover bolts in
sequence shown in Fig. 21. Torque bolts in position 1 through 10, Fig. 21, to 11 ft. lbs., then tighten an additional 75 degrees. Tighten bolts in
positions 11 and 12, Fig. 21, to 11 ft. lbs, then tighten an additional 25 degrees. Torque timing chain housing to engine and camshaft housing
fasteners to specifications.
