|
|
ENGINE HYDRO-MOUNT INSULATORS Engine hydro-mounts may show surface cracks this will not effect performance and mount should not be • Drive shaft distress: Refer to Driveshafts in Sus- pension, Group 2. • Any front end structural damage (after repair). • Insulator replacement. TIMING BELT INSPECTION—IN VEHICLE (1) Remove the accessory drive belts. Refer to Group 7, Cooling System for procedure. (2) Remove timing belt covers. Refer to procedure in this section. (3) Inspect both sides of the timing belt. Replace belt if any of the following conditions exist (Fig. 120): (a) Hardening of back rubber back side is glossy without resilience and leaves no indent when (b) Cracks on rubber back. normal if they are sharp as if cut by a knife. (h) Vehicle mileage at component maintenance requirement. Refer to Group 0, Lubrication and belt, the belt cover can be installed. NOTE: If belt requires replacing, ensure the proper SPECIFICATIONS 3.5L ENGINE CYLINDER BLOCK Cylinder Bore Diameter . . 96.0 mm 6 0.0076 mm (3.780 in. 6 0.0003 in.) Out of Round (Max) . . . . . . . 0.076 mm (0.003 in.) PISTONS Type Material . . . . . . . . . . . . . . . . . . . Aluminum (Full Floating Piston Pin) Clearance at Size Location . . . . . . . . –0.007mm to +0.047 mm (–0.0003 in. to +0.0018 in.) PISTON WEIGHT A Size . . . . . 438 to 443 grams (15.45 to 15.62 oz.) PISTON RING GROOVE DIAMETER No. 1 . . . . . . . . 87.4 – 87.6 mm (3.441 – 3.449 in.) CYLINDER BORE AND PISTON SPECIFICATION CHART ENGINE STANDARD CYLINDER BORE MAXIMUM OUT-OF-ROUND MAXIMUM TAPER STANDARD PISTON SIZE 3.5L 96.0 mm (3.780 in.) 0.076 mm (0.003 in.) 0.051 mm (0.002 in.) 95.980 6 0.019mm (3.7788 6 0.0008 in.) Piston to Bore Clearance: -0.007 to +0.047 mm (-0.0003 to 0.0018 in.) Measurement taken at Piston Size location. Fig. 120 Timing Belt Inspection 300M 3.5L ENGINE 9 - 59 CLEANING AND INSPECTION (Continued) |