Repair Hyundai Getz
Hyundai Getz. The maintenance+ 1. Operation and maintenance service
- 2. The engine
Technical characteristics of engines
Specifications of engines
Technical characteristics of engines in working volume of 1,5 and 1,6 l
Specifications of engines in working volume of 1,5 and 1,6 l
Technical characteristics of cars with engines in working volume 1,1
Engines in working volume of 1,1 and 1,3 l
Technical condition of the engine
Broad-brush observations on repair of engines
Removal and installation of the power unit
The general sequence of dismantling of the engine
Обкатка the engine after repair
Engine check on the car after repair
The block of cylinders
Shatunno-piston group
Cranked shaft and flywheel
Head of the block of cylinders
Camshaft and its drive
Cooling system
Greasing system
The power supply system
System of release of the fulfilled gases
Possible malfunctions of the engine, their reason and ways of elimination
Malfunctions of hydraulic pushers of valves
Malfunctions of system of giving of fuel and ways of their elimination
+ 3. Transmission
+ 4. A running gear
+ 5. A steering
+ 6. Brake system
+ 7. An electric equipment
+ 8. A body
9. Electric equipment schemes
Hyundai Getz>> The engine>> Cranked shaft and flywheel
Cranked shaft
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Fig. 2.4. A cranked shaft: 1 – a gear wreath of the gauge of position of a cranked shaft; 2 – a bolt of fastening of a gear wreath of the gauge of position of a cranked shaft; 3 – a cranked shaft; 4 – the bottom loose leaf of a cranked shaft with a persistent fillet of the radical bearing; 5 – a cover of the radical bearing; 6 – a bolt of fastening of a cover of the radical bearing; 7 – the bottom loose leaf of the radical bearing; 8 – the top loose leaf of the radical bearing; 9 – the top loose leaf of a cranked shaft with a persistent fillet of the radical bearing
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The cranked shaft of the engine is shown on fig. 2.4.
Removal
Remove pistons and rods.
Remove the holder of a back epiploon and a back epiploon of a cranked shaft.
Covers of radical bearings should be numbered.
Turn away cover bolts, remove covers together with loose leaves of bearings.
Take out a cranked shaft from support.
Remove from a cranked shaft a gear wreath of the gauge of position of a cranked shaft.
Take out loose leaves from the block of cylinders and remove persistent half rings of the central bearing.
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THE NOTE
At dismantling put on covers of radical bearings of a cranked shaft of a label that at the subsequent assemblage to establish them on former places.
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Check of a technical condition
Clear a cranked shaft solvent and dry its compressed air.
Examine radical and шатунные shaft necks on presence of damages, non-uniform deterioration and cracks.
Spend a copper coin on the bearing. If the bearing erases copper, means, its surface is too rough also it it is necessary to process.
Be convinced of cleanliness of oil channels. Eliminate the found out defects or replace defective details.
Check up конусность and ovality of necks of a shaft.
Nominal diameter of necks of a shaft, mm:
The radical..... 50
шатунных..... 45
Ovality both конусность radical and шатунных necks of a shaft no more than 0,005.
Check up necks of epiploons of a cranked shaft on presence of wear tracks or damages. If epiploons have wiped flutes on necks new epiploons will pass oil.
Loose leaves radical and шатунных bearings check external survey on presence отслаивания, fusion traces, прихвата. Defective loose leaves replace.
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THE NOTE
On loose leaves it is impossible to spend any подгоночные operations. At teases, risks or отслоениях replace loose leaves new.
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Check of backlashes between loose leaves and necks of a cranked shaft
For backlash check between loose leaves and necks of a cranked shaft measure diameter radical and шатунных necks, and also internal diameter of loose leaves. The backlash is defined as a difference between diameter of a neck and internal diameter of the loose leaf.
Nominal backlashes (engines 1,3), mm:
Between loose leaves and radical necks of a cranked shaft №1, 2, 4, 5..... 0,028–0,046
Between loose leaves and a radical neck №3 (the central neck)..... 0,034–0,52
Between loose leaves and шатунными necks..... 0,024–0,042
Nominal backlashes (engines 1,1), mm:
Between loose leaves and radical necks of a cranked shaft №1, 2, 3, 4, 5...... 0,020–0,038
Between loose leaves and шатунными necks..... 0,012–0,041
Check of backlashes by means of the calibrated plastic wire
Backlash check between loose leaves and shaft necks can be spent by means of the calibrated plastic wire.
Before check wipe necks of a shaft and loose leaves for removal of oil, greasing and other pollution.
Put on a working surface of a neck a piece of the calibrated plastic wire. The length of a piece of a wire should be equal to width of the corresponding loose leaf. Besides, the wire should not block lubricant apertures.
Establish a cranked shaft, loose leaves and covers of bearings.
Tighten bolts of fastening of covers the demanded moment, thus it is necessary to watch, that the shaft did not turn.
Remove covers of bearings. Define backlashes between loose leaves of the bearing and shaft necks on width of the most flattened site of a wire by means of a scale put on packing of a wire.
If backlashes exceed maximum permissible, replace loose leaves of bearings. If replacement of loose leaves does not possible to receive normal backlashes, прошлифуйте necks of a cranked shaft till next repair size and establish loose leaves of the corresponding repair size.
Epiploons
Check up forward and back epiploons of a cranked shaft on presence of damages and deterioration of condensing edges. Replace defective epiploons.
Installation of a cranked shaft
Establish the top loose leaves of radical bearings of a cranked shaft in support in the block of cylinders.
At a reuse of loose leaves of radical bearings of a cranked shaft establish them on former places according to the labels put at dismantling.
Establish persistent half rings.
Lay a cranked shaft in support, preliminary having greased necks with engine oil.
Establish covers of radical bearings with the bottom loose leaves and tighten bolts of fastening of covers the demanded moment in a following order:
– A cover of the average bearing;
– A cover of 2nd bearing;
– A cover of 4th bearing;
– A cover of the forward bearing;
– A cover of the back bearing.
Tighten bolts of fastening of covers in regular intervals in two-three receptions before reception of the demanded moment of an inhaling.
Covers of bearings establish an arrow towards a pulley of a cranked shaft, considering numbers of covers.
The moments of an inhaling of bolts of fastening of covers of radical bearings of engines, Н·м:
1,1 l...... 50–55
1,3; 1,5; 1,6 l..... 55–60
The moments of an inhaling of bolts of fastening of covers of rods of engines, Н·м:
1,1 l...... 20–23
1,3; 1,5; 1,6 l...... 32–35
Be convinced of ease of rotation of a cranked shaft and conformity with norm of an axial backlash of a shaft (a backlash between a persistent fillet of loose leaves of the average radical bearing and cheeks of a cranked shaft).
Rating value of an axial backlash of a cranked shaft of engines, mm:
1,1 l...... 0,05–0,25
1,3; 1,5; 1,6 l..... 0,005–0,175
Establish an epiploon in an aperture in the holder of a back epiploon of a cranked shaft and запрессуйте it оправкой against the stop, trying not to admit a warp.
Establish the holder of a back epiploon and a sealing lining and tighten five bolts of its fastening.
Before installation put engine oil on a working edge of an epiploon and an interfaced surface of a cranked shaft.
Establish a back cover of the block of cylinders and tighten bolts of fastening of a cover.
Establish covers of rods.
Tighten bolts of fastening of covers.
Flywheel
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Fig. 2.5. A flywheel of the engine of cars with a mechanical transmission: 1 – a gear wreath of a flywheel; 2 – a flywheel; 3 – a bolt of fastening of a flywheel to a flange of a cranked shaft
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The flywheel of the engine of cars with a mechanical transmission is shown on fig. 2.5.
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Fig. 2.6. A flywheel of the engine of cars with an automatic transmission: 1, 3 – connecting flanges of a flywheel; 2 – a leading flange of a flywheel; 4 – a bolt of fastening of a flywheel to a flange of a cranked shaft
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The flywheel of the engine of cars with an automatic transmission is shown on fig. 2.6.
Check up a condition of a gear rim of a flywheel and in case of damage of teeths replace a flywheel. If on a flywheel of from outside conducted disk of coupling cracks owing to an overheat are found out, it is necessary to replace a flywheel. The gear wreath of a flywheel should not be turned at a twisting moment 590 Н·м (60 кгс·м) or to move in an axial direction at effort 3,9 кН (400 кгс).
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THE NOTE
Before removal of a flywheel from a cranked shaft put the labels defining their mutual position in the collected condition. At engine assemblage industrially the flywheel is balanced in gathering with cranked shaft. Thus, their mutual position at engine repair should not be broken.
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On the surface of a flywheel adjoining to a flange of a cranked shaft, and a basic surface of a conducted disk of coupling scratches and teases are not supposed. The admission неплоскостности a basic surface of a conducted disk of coupling makes 0,06 mm.
Scratches and teases on a basic surface of a conducted disk of coupling remove проточкой, removing a layer of metal in the thickness no more than 1 mm. Pierce as well a surface adjoining to a flange of a cranked shaft. At проточке it is necessary to provide parallelism of these surfaces. Admissible непараллельность makes 0, 1 mm.
The moment of an inhaling of bolts of fastening of a flywheel of engines, Н·м:
1,1 l..... 70–80
1,3 l..... 130–140
1,5; 1,6 l...... 120–130
Useful data and councils
Bearings of engines
What bearings are established in your engine? Not all motorists can answer such question intelligibly.
Nevertheless bearings there are. And not any, but quite defined. They are durable, but are not eternal, and when fail, without understanding of an essence of the matter not to manage. Well and for professionals-repairmen it is the most usual matter.
As the bearing works
Sliding bearings serve in modern automobile engines as support for cranked and camshafts practically in all cases. Bearings качения (ball, roller, needle) apply to the similar purposes only in small motorcycle motors.
Necessary working capacity of bearings of sliding is reached by use of effect of a so-called oil wedge. At rotation of a smooth shaft in a backlash between shaft and an aperture oil moves. As the loading operating on a shaft, causes its excentric displacement, oil is as though tightened in a narrowed part of a backlash and forms the oil wedge interfering contact of a shaft with walls of an aperture. The more pressure and viscosity of oil in a backlash, the the big loading (before contact of surfaces) maintains the sliding bearing.
Actual pressure of oil in a wedge zone reaches 50–80 МПа (500–800 kg/sm 2), and in some designs and it is more. It in hundreds times above, than in submitting system (system of greasing of the engine). However it is not necessary to think that pressure of giving influences bearing work a little. The it above, the goes oil prorolling through the bearing more intensively and is better it is cooled by that.
Under certain conditions the operating mode with the minimum friction (it also name liquid) can be broken. It happens at fall of viscosity of oil, for example because of its overheat owing to insufficient giving, and decrease in frequency of rotation of a cranked shaft at loading increase.
Quite often, especially after engine repair, not optimum geometry of knot affects also. At an insignificant deviation of the form of surfaces from cylindrical, at a warp of axes and other defects of details probably local increase of specific loading (i.e. the loading carried to the area of a surface) above an admissible limit. Then the oil film in these parts becomes thin, and shaft and bearing surfaces start to adjoin on microroughnesses. There is th