G37x Sedan AWD V6-3.7L (VQ37VHR) (2010)
12. Remove front timing chain case. Refer to See: Engine/Timing Components/Timing Chain/Service and Repair/Removal and Replacement/Exploded
View.
13. Remove timing chain tensioner (primary) (1) as follows:
a. Remove lower mounting bolt (A).
b. Loosen upper mounting bolt (B) slowly, and then turn chain tensioner (primary) on the upper mounting bolt so that plunger (C) is fully
expanded.
NOTE:
Even if plunger is fully expanded, it is not dropped from the body of timing chain tensioner (primary).
c. Remove upper mounting bolt, and then remove timing chain tensioner (primary).
14. Remove water pump as follows:
a. Remove three water pump mounting bolts. Secure a gap between water pump gear and timing chain, by turning crankshaft counterclockwise
until timing chain looseness on water pump sprocket becomes maximum.
b. Screw M8 bolts (A) [pitch: 1.25 mm (0.049 in) length: approx. 50 mm (1.97 in)] into water pumps upper and lower mounting bolt holes until
they reach timing chain case. Then, alternately tighten each bolt for a half turn, and pull out water pump (1).
CAUTION:
-
Pull straight out while preventing vane from contacting socket in installation area.
-
Remove water pump without causing sprocket to contact timing chain.
c. Remove M8 bolts and O-rings from water pump.
CAUTION:
Never disassemble water pump.
INSTALLATION
1. Install new O-rings to water pump.
-
Apply engine oil to O-ring (1) and engine coolant to O-ring (3) as shown in the figure.