Specifications

(13) Remove hydraulic tensioner blade (Fig. 69).
(14) Remove hydraulic tensioner oil feed line (Fig.
70).
(15) Remove hydraulic tensioner.
(16) Remove timing chain.
(17) Remove vacuum pump (Fig. 71).
INSTALLATION
(1) Install vacuum pump with new O-ring (Fig.
72).
CAUTION: The vacuum pump must be centered in
the block and tighten with two bolts. Ensure that
the pump spins freely. If vacuum pump drags or
does not spin freely loosen bolts and perform pro-
cedures again.
(2) Install timing chain. Starting at the crankshaft
align the dark link on timing chain to the timing
mark on the crankshaft sprocket. Next align the sec-
ond dark link on the chain with the timing mark on
Fig. 66 Timing Marks
Fig. 67 Alignment Timing Sprockets
Fig. 68 Lower Chain Guide
Fig. 69 Hydraulic Tensioner Blade
9 - 66 ENGINE NS/GS
REMOVAL AND INSTALLATION (Continued)