Nissan Maxima QX
+ Cars of the Nissan Maxima brand
+ Maintenance instruction
+ Settings and routine maintenance
- Engine
- SOHC engines
General information
Preparatory actions and the list of repair procedures which can be executed without extraction of the engine from the car
Reduction of the piston of the first cylinder in the provision of the top dead point (TDP)
Removal and installation of covers of heads of cylinders
Removal, check of a state and installation of assembly of yokes
Replacement of maslootrazhatelny caps and valvate springs with plates
Removal and installation of a gas-distributing belt and cogwheels of the GRM drive
Removal and installation of camshafts and pushers of valves
Removal and installation of the inlet pipeline
Removal and installation of final collectors
Removal and installation of heads of cylinders
Removal and installation of a pulley of a bent shaft
Replacement of a forward epiploon of a bent shaft
Removal and installation of the pallet of a case of the engine
Removal, check of a state and installation of the oil pump
Removal and installation of a flywheel / driving disk
Replacement of a back epiploon of a bent shaft
Check of a state and replacement of support of a suspension bracket of the power unit
+ DOHC engines
+ General capital repairs of the engine
+ Cooling systems, heating
+ Power supply system and release
+ Engine electric equipment
+ Control systems of the engine
+ Transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
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Check of a state and replacement of support of a suspension bracket of the power unit
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Support of a suspension bracket of the power unit extremely seldom need attention, however the damaged pillows have to be replaced without any delay in order to avoid increase of loadings and premature wear of components of the transmission line. |
On the considered models the suspension bracket of the power unit is realized by means of four rubber-metal support. By means of the right forward and back support the block of the engine fastens to the bearing cross beam laid from below. The left forward and back support fix a transmission part of the unit to a car frame. CHECK
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1. For check it is necessary to raise slightly the engine, having completely unloaded support.
2. The car also establish to Poddomkratta it on props. Hang out the unit from above on the winch or a beam.
3. Check pillows of support for existence of cracks, signs of hardening of rubber and its peeling from the central metal plugs.
4. Estimate side play size between assemblies of support and the power unit / frame of the car (as the lever use mount or the big screw-driver). In case of identification of a weak point lower the unit and tighten fixture of support.
5. Pillows in order to avoid destruction of rubber have to be processed by special protective structure. |
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REPLACEMENT
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Disconnect a negative wire from the battery.
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If the stereosystem established on the car is equipped with a security code before disconnecting the battery make sure that you have the correct combination for input of the audio system in action! Cock the parking brake, a front of the car and establish to a poddomkratta it on props. Remove protection of a case. |
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Forward and back support of the engine (right)
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1. Hang out the unit from above.
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2. Turn out through bolts of fastening of support to a cross beam. |
3. Turn out fixing bolts and remove a cross beam from the car chassis.
4. Turn out through bolts of fastening of support to arms on the engine block.
5. Installation is made upside-down.
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Final tightening of fixture of support with the required effort has to be made only after lowering of the power unit in regular situation. You pass to performing procedures of a final stage of tightening of fixture. |
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Forward and back support of transmission (left)
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The transmission (left) party of the power unit also fastens by means of two support - forward and back. |
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Forward left support
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1. Prop up transmission under a dome a jack. Turn out a through bolt of fastening of a support to the chassis and three bolts of its fastening to transmission. Remove assembly of a support. |
2. Installation is made upside-down.
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Final tightening of fixture of a support with the required effort has to be made only after lowering of the power unit in regular situation. You pass to performing procedures of a final stage of tightening of fixture. |
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Back left support
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1. Working under the car, turn out nuts of fastening of an arm of a support to a transmission case. |
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2. The through bolt of fastening of a support to an arm of the chassis is given from above, - previously remove assembly of the air cleaner with an inlet sleeve. |
3. Lower transmission so that the arm of transmission was removed from fixing hairpins, then remove a support.
4. Installation is made upside-down.
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Final tightening of fixture of a support with the required effort has to be made only after lowering of the power unit in regular situation. You pass to performing procedures of a final stage of tightening of fixture. |
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Final stage of tightening of fixture of all support
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For the purpose of the maximum extension of service life of rubber-metal support and decrease in level of noise and vibrations final tightening of fixture of support with the required effort has to be made after lowering of the power unit in regular situation (the car should be parked on the flat horizontal platform).
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Carving part of fixture should be greased with special sealant for fixing of threaded connections. Track that rubber plugs were not twisted or displaced from the seats. If replacement more than one support was made, and also at installation of the power unit tightening of fixture of support has to be made in the following order:
a) Bolts of fastening of a cross beam;
b) Right back support;
c) Left forward support;
d) Right forward support;
e) Left back support. |
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