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Home >> Nissan-Datsun >> 2011 >> Maxima V6-3.5L (VQ35DE) >> Repair and Diagnosis >> Engine, Cooling and Exhaust >> Engine >> Service and Repair >> Removal and Replacement

Removal and Replacement





ENGINE ASSEMBLY


Removal and Installation












WARNING:
- Place chocks at front and back of rear wheels.
- For engines not equipped with engine slingers, attach proper slingers and bolts as described in the
NISSAN Parts Catalog.

CAUTION:
- Do not start working until exhaust system and coolant are cool.
- If items or work required are not covered by the engine main body section, follow the applicable procedures.
- Use the correct supporting points for lifting and jacking. Tools and Equipment Garage Jack And Safety Stand, "Garage Jack and Safety
Stand".
- In removing the drive shafts, be careful not to damage any transaxle grease seals.
- Before separating the engine and transaxle, remove the crankshaft position sensor (POS). Refer to
Exploded View.
- Do not damage the edge of the crankshaft position sensor (POS) or the ring gear teeth.

REMOVAL
1. Release fuel pressure. Testing and Inspection.
2. Drain coolant. Changing Engine Coolant.
3. Drain power steering fluid. Draining.
4. Drain transaxle fluid. Changing.
5. Remove the engine under cover. Exploded View.
6. Remove the engine room cover. Service and Repair.
7. Remove front air duct, air duct hose and resonator assembly and air cleaner case assembly Service and Repair
8. Remove battery. Removal And Installation.
9. Remove ECM.
10. Remove transmission control module. Removal And Installation.
11. Remove battery ground cable with current sensor.
12. Remove battery tray and bracket. Service and Repair.
13. Remove cowl top extension. Removal And Installation.
14. Remove lower cowl top extension brace. Exploded View.
15. Remove IPDM E/R. Service and Repair.
16. Remove upper radiator hose.
NOTE:
Cap or plug opening(s) to prevent fluid from spilling.
17. Disconnect CVT cooler hoses.
NOTE:
Cap or plug opening(s) to prevent fluid from spilling.
18. Disconnect fuel hose quick connection at vehicle piping side. Removal And Installation.
NOTE:
Cap or plug opening(s) to prevent fluid from spilling.
19. Disconnect EVAP vacuum hose.
20. Disconnect heater hoses (engine side).
NOTE:
Cap or plug opening(s) to prevent fluid from spilling.
21. Remove coolant reservoir tank.
22. Disconnect transaxle shift control cables.
23. Remove lower radiator hose.
NOTE:
Cap or plug opening(s) to prevent fluid from spilling.
24. Disconnect brake booster vacuum hose.
25. Remove power steering reservoir.
26. Remove torque rod.
27. Remove RH engine mount.
28. Remove the cooling fan assembly. Removal and Installation.
29. Discharge and recover the R134a refrigerant. Service and Repair.
30. Remove the front drive shafts. Front Drive Shaft Left Side and Front Drive Shaft Right Side, "Removal and Installation (Right Side)".
31. Remove the rear lower insulator and torque rod.
32. Remove the front exhaust tube. Removal And Installation.
33. Disconnect the A/C high side and low side hoses from the A/C compressor. Low-Pressure Pipe Removal And Installation High-Pressure Flexible Hose Removal And Installation, "HIGH-
Exploded View Low-Pressure Flexible Hose Removal And Installation, "LOW-PRESSURE FLEXIBLE HOSE : Removal and Installation for Low-Pressure Flexible Hose".





34. Install engine slingers into front of LH cylinder head and rear of
RH cylinder head.
- (A): RH cylinder head





- (B): LH cylinder head
35. Remove rear cover plate.
36. Remove the torque converter bolts.
37. Disconnect engine mount vacuum hoses.
38. Position a suitable support table under suspension member and engine assembly.
39. For additional safety, secure the engine in position with suitable tool.
40. Remove suspension member bolts. Removal And Installation.
41. Carefully lower the engine, transaxle assembly and suspension member using Tool, avoiding interference with the vehicle body.






CAUTION:
- Before and during this procedure, always check if any harnesses are left connected.
- Avoid any damage to, or any oil/grease smearing or spills onto the engine mount insulators.
42. Remove the starter motor. Service and Repair.
43. Remove the crankshaft position sensor (POS). Exploded View.
44. Disconnect CVT speed sensor and CVT unit connector. Exploded View.
45. Separate the engine from the transaxle assembly.
46. Lift the engine from the suspension member.

INSTALLATION
Installation is in the reverse order of removal.
- Tighten transmission bolts to specification. Removal And Installation.

INSPECTION AFTER INSTALLATION
- Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required quantity, fill to the specified level. Recommended Chemical Products And Sealants.
- Use procedure below to check for fuel leakage.
- Turn ignition switch ON (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leak- age at connection points.
- Start engine. With engine speed increased, check again for fuel leakage at connection points.
- Run engine to check for unusual noise and vibration.
- Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gas, or any oils/fluids including engine oil and engine coolant.
- Bleed air from passages in lines and hoses, such as in cooling system.
- After cooling down engine, again check oils/fluids including engine oil and engine coolant. Refill to specified level, if necessary.
- Summary of the inspection items:




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