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Engine Mechanical (Service Specifications): Specifications Lexus GS IV

Mechanical

TORQUE SPECIFICATIONS [03/2012 - ]

Part TightenedN*mKgf*cmFt.*lbf
Ignition coil x Cylinder head cover101027
Cylinder head cover sub-assembly x engine wire101027
Cylinder head cover sub-assembly LH x engine wire101027
Inverter reservoir tank x Inverter bracket1313310
No. 1 air cleaner inlet x Body5.05144 in.*lbf

ENGINE

Part TightenedN*mKgf*cmFt.*lbf
Camshaft timing gear assembly x Camshaft100102074
Camshaft timing exhaust gear assembly x Camshaft100102074
No. 3 chain tensioner assembly x Camshaft housing LH2121415
Camshaft housing LH x Cylinder head LHFor bolt A2828621
For bolt B1616312
No. 2 chain tensioner assembly x Camshaft housing RH2121415
Camshaft housing RH x Cylinder head sub-assemblyFor bolt A2828621
For bolt B1616312
No. 1 chain tensioner assembly x Cylinder head sub-assembly101027
Timing chain cover plate x Timing chain cover sub-assembly9.19381 in.*lbf
Cylinder head cover sub-assembly x Camshaft housing RH101027
Cylinder head cover sub-assembly LH x Camshaft housing LHFor bolt A and B2121415
For bolt C and D101027
No. 2 water by-pass pipe sub-assembly x No. 2 separator case101027

CAMSHAFT

Part TightenedN*mKgf*cmFt.*lbf
Cylinder head sub-assembly x Cylinder block sub-assembly1st3636727
2ndTurn 90°
3rdTurn 90°
Cylinder head LH x Cylinder block sub-assemblyRecessed head 1st3636727
2ndTurn 90°
3rdTurn 90°
14 mm (0.551 in.) head3030622
Camshaft bearing cap (for Bank 1) x Camshaft housing RH1st101027
2nd1616312
Camshaft housing RH x Cylinder head sub-assembly2828621
Camshaft bearing cap (for Bank 2) x Camshaft housing LH1st101027
2nd1616312
Camshaft housing LH x Cylinder head LH2828621
Camshaft timing gear assembly x Camshaft100102074
Camshaft timing exhaust gear assembly x Camshaft100102074
No. 3 chain tensioner assembly x Camshaft housing LH2121415
No. 2 chain tensioner assembly x Camshaft housing RH2121415

CYLINDER HEAD GASKET

Part TightenedN*mKgf*cmFt.*lbf
Crankshaft pulley x Crankshaft2502549184
Wire harness bracket x Oil pan sub-assembly101027

FRONT CRANKSHAFT OIL SEAL

Part TightenedN*mKgf*cmFt.*lbf
Flywheel sub-assembly x Crankshaft8384661
Transmission input damper cover assembly x Flywheel sub-assembly4950436

REAR CRANKSHAFT OIL SEAL

Part TightenedN*mKgf*cmFt.*lbf
Engine hanger x Cylinder head3333724
Rear No. 1 engine mounting insulator x Hybrid vehicle transmission assembly5253038
Front engine mounting insulator x Front suspension crossmember sub-assembly7071452
Front No. 1 engine mounting bracket RH and LH x Engine mounting insulator3535726
Rear engine mounting member x Rear No. 1 engine mounting insulator1313310
Engine oil level dipstick guide x Cylinder block101027
Front suspension crossmember sub-assembly and strut bar bracket reinforcement RH and LH x BodyFor bolt A1941978143
For bolt B5051037
For bolt C4950036
For nut1511540111
Rear engine mounting member x Body2626019
Wire harness x Body5.45548 in.*lbf
Front lower suspension member protector x Front suspension crossmember sub-assembly5.55649 in.*lbf
Front No. 2 upper suspension member x Front suspension crossmember sub-assembly and body7.47565 in.*lbf
Front shock absorber assembly x Front suspension lower arm assembly108110180
Front center floor brace sub-assembly x Body7.47565 in.*lbf
No. 3 engine wire x Body8.58775 in.*lbf
No. 1 inverter cooling pipe x Body131279
Camshaft housing sub-assembly LH x Air conditioning harness101027
Air cleaner case sub-assembly x Body5.05144 in.*lbf
No. 1 air cleaner inlet x Body5.05144 in.*lbf
Front suspension member brace x Front lower suspension member protector and body5253038

ENGINE ASSEMBLY

Part TightenedN*mKgf*cmFt.*lbf
Rear oil seal retainer x Cylinder block101027
Water outlet pipe sub-assembly x Cylinder block101027
No. 1 chain vibration damper x Cylinder head LH and cylinder block2322917
Idle sprocket assembly x Cylinder block6061244
No. 1 chain tensioner assembly x Cylinder head sub-assembly101027
Oil strainer stud bolt x Cylinder block and timing chain cover4.04135 in.*lbf
Oil pan baffle plate x Cylinder block sub-assembly101027
Oil strainer sub-assembly x Cylinder block and timing chain cover101027
Oil pan stud bolt x Oil pan sub-assembly4.04135 in.*lbf
Oil pan sub-assembly x Cylinder block and timing chain coverFor bolt A, B and nut101027
For bolt C2121415
No. 2 oil pan sub-assembly x Oil pan sub-assembly101027
Oil pan drain plug x No. 2 oil pan sub-assembly4040830
Rear water by-pass joint x Cylinder head sub-assembly101027
Water inlet with thermostat sub-assembly x Water inlet sub-assembly101027
Water inlet sub-assembly x Timing chain cover101027
Water drain cock x Cylinder block3030622
Water drain cock plug x Water drain cock131309
No. 2 separator case x Cylinder head cover sub-assembly LH101027
V-bank cover bolt x Cylinder head cover sub-assembly101027
V-bank cover bracket sub-assembly x Cylinder head cover sub-assembly LH101027
No. 3 water by-pass pipe x Cylinder head101027
No. 2 surge tank stay x Cylinder head2121415
V-ribbed belt tensioner assembly x Timing chain cover and cylinder block4343832
Front No. 1 engine mounting bracket LH x Cylinder block4343832
Front No. 1 engine mounting bracket RH x Cylinder block4343832

ENGINE UNIT

Part TightenedN*mKgf*cmFt.*lbf
No. 1 straight plug x Cylinder head6061244
No. 1 straight screw plug x Cylinder head4444932
No. 2 straight screw plug x Cylinder head8081659
Union x Cylinder head1515011
Stud bolt x Cylinder headFor bolt A and B101027
For bolt C4.04135 in.*lbf

CYLINDER HEAD

Part TightenedN*mKgf*cmFt.*lbf
Stud bolt x Cylinder block101027
No. 1 oil nozzle sub-assembly x Cylinder block9.09280 in.*lbf
Main bearing cap x Cylinder block16 point head 1st6162245
2ndTurn 90°
12 mm head2626219
Connecting rod cap x Connecting rod1st4040830
2ndTurn 90°

CYLINDER BLOCK

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