Specifications

the camshaft sprocket. Third align the final dark link
on the chain to the timing mark on the injection
pump sprocket. Last install the chain around the
vacuum pump (Fig. 73).
(3) Install hydraulic tensioner.
(4) Install hydraulic tensioner oil feed line.
(5) Install hydraulic tensioner blade. Torque bolt to
28 N·m (260 in. lbs.).
(6) Install lower chain guide.
(7) Install oil pump drive gear on crankshaft.
(8) Install timing chain cover. Refer to installation
procedure outlined in this section.
(9) Install pump shaft support bracket assembly.
Tighten nuts to 24.5 N·m (216 in. lbs.).
CAUTION: Correct torque on the power steering/air
conditioning pulley nut is important or engine dam-
age can occur.
Fig. 70 Hydraulic Tensioner and Oil Feed Line
Fig. 71 Vacuum Pump—Removal
Fig. 72 Vacuum Pump Assembly
Fig. 73 Timing Chain Procedure
NS/GS ENGINE 9 - 67
REMOVAL AND INSTALLATION (Continued)