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Chery SQR372 Скачать руководство пользователя страница 1

SQR7080 Maintenance Manual 372 Engine Mechanical System

Chery Automobile Co., Ltd

1

SQR372 Engine

Maintenance Manual

Chery Automobile Co., Ltd.

Forewords

In order to help the technical servicing personnel to have correct understanding and good command of the
cute Chery Model SQR7080 vehicle, and to master the skills for fast repairs and rational maintenance, a
special edition of the “Chery QQ Technical Service Manual—372 Engine Mechanics Division” is
compiled and published.

This Manual gives a detailed description on the dismounting, installating, checks and tests, adjustments
and diagnoses, technical standards and specifications for adjustments and diagnoses of various parts and
components as well as subsystems of Chery QQ 372 engines. This Manual is published by Chery
Automobile Co., Ltd.

Any parts or sections of this Manual shall not be copied or duplicated in whatever form or by whatever
approach without the written authorization of the publisher.

The right of interpreting the Manual belongs to the Service Department of Chery Car Marketing Co. Ltd

Editors

March of 2004

3

、

Special tools for maintenance:

Outer appearance

Code and Name

Purpose

Auxiliary devices for engine

dismounting and checks

Mounting onto engine

dismounting and check

stand

Engine dismounting and check stand

Dismounting and

installing engine

Clockwise belt wheel wrench

Camshaft clockwise

belt wheel dismounting

Ｓ

Spring bush pulling and removing

device

Installing crankshaft

oil seal

1
2
3
...
»

Содержание SQR372

Страница 1: ...r adjustments and diagnoses of various parts and components as well as subsystems of Chery QQ 372 engines This Manual is published by Chery Automobile Co Ltd Any parts or sections of this Manual shall...

Страница 2: ...wheel fixture Dismounting and installation of crankshaft Throttle guiding pipe punch Removing and installation of throttle guiding pipe Shaft oil seal replacer Oil seal stand screw driver Outer appear...

Страница 3: ...ap ruler pressure meter torque wrench Tool Piston ring dismounting device Oils Engine lubiricating oil adhesion agents Chapter 2 Timing Blet Service 1 Configuration diagram 1 Water pump pulley 2 Timin...

Страница 4: ...he water pump pulley according to the illustration Remove with SST if there are any Please remove with screwdriver and wrench accordingly if there is no SST at hand SST Remove torsional vibriation dam...

Страница 5: ...gear clockwise with wrench align timing mark of camshaft timing gear with the cam mark of camshaft cover cap Attention You can rotate the engine clockwise only after installing the pulley Before remo...

Страница 6: ...Attention Pay Attention to the following points while using timing belt Don t bend the belt even at a small angle otherwise it will result in rope fracture inside the belt Service life of belt is shor...

Страница 7: ...nditions shown in the figure occurs Cracks on the back side rubber Cracks of teeth roots cracks clearing off the fabric lining layer Tears and wears of fabric lining layer missing rear teeth broken te...

Страница 8: ...ide 3mm Timing belt tensioner Turn the belt tensioner supporting stand bolts to see if there are any abnormal sounds Check to see if there are any damages on the contacting surface of the belt Specifi...

Страница 9: ...t timing gear around the front end of the air exhaust camshaft so as to make the positioning groove on the gear be aligned with the positioning pin on the end surface of the camshaft Then use screws t...

Страница 10: ...les towards the engine rotating direction so that the camshaft pulley and the crankshaft pulley matches the clockwise marks respectively Use hands to press down for about 5mm The force for pressing th...

Страница 11: ...pulled to be immovable fixed pay attention not to make the gear belt moving tighten the bolt according to the specified torque of 98 0 10N m 10 1kgm torque98 0 10N m 10 1kgm SST 4 When there is a flyi...

Страница 12: ...earing cap 7 Exhaust camshaft 8 Intake camshaft 9 Oil seal 10 Spring retainer 11 Wave washer 12 Iintake camshaftsub gear 13 Snap ring 14 Lock nut 15 Flange Non reusable part 3 2 Removal Remove cylinde...

Страница 13: ...tention In order to eliminte the radial force keep the camshaft in the leveled position before dismounting it to avoid possible damages caused by excessive radial forces 3 Remove the bolts in the sequ...

Страница 14: ...proper replacement Camshaft Unit mm EF Model Item ZL RL GL GS ZS IN 23 0 0 02 0 033 Standard EX 23 0 0 02 0 033 IN 22 9 Limit EX 22 9 2 Checks on camshaft axial clearance 1 When the axial spacing is m...

Страница 15: ...aft Attention Size of the axial clearance of the camshaft 1 Smear lubricating oil at the camshaft gear section and the cylinder cover axial diameter section 2 Fix the camshaft slave gear by roughly ad...

Страница 16: ...rface of the plug use SSTto press the plug lid Attention Install the plug lid shown as the right illustration Keep unbiased with cylinder head end surface after pressing outside 7 Smear engine oil on...

Страница 17: ...ylinder head from two sides to the centre symmetrically according to the regulated torque of 6 1N m 1 Use feeler gauge to check the throttle clearance Attention Make sure to measure the clearance betw...

Страница 18: ...hickness shown as the illustration 2 18 2 40 2 62 2 20 2 42 2 64 2 22 2 44 2 66 2 24 2 46 2 68 2 26 2 48 2 70 2 28 2 50 2 72 2 30 2 52 2 74 2 36 2 58 2 80 2 32 2 54 2 76 2 38 2 6 7 Use the selected ad...

Страница 19: ...screwdriver to stir up the separation cushion and use magnet bar to remove the separation cushion from inside 6 Turn the crankshaft to make the cam top facing downward Press down the valve and use sp...

Страница 20: ...Weather sealI 4 Cylinder head gasket 5 Adjust shim 6 Valve lifter 7 Keeper 8 Valve spring seat 9 Valve spring 10 Iintake valve 11 Exhaust valve 12 Valve oil seal 13 Valve seat 14 Valve guide Non reus...

Страница 21: ...the valve spring locking block throttle spring stand valve spring IN valve and EX valve 6 Removal of valve oil seal and valve spring washer 4 3 Clearing 1 The accumulated carbon residue covered on the...

Страница 22: ...e checks on throttles 1 Check to see if there are some deformations obvious tears and wears Routine check list on valve Unit mm Item Standard Limit IN 0 85 1 41 ___ Wide E X 1 07 1 36 ___ IN 1 0 0 2 0...

Страница 23: ...0 degrees C with hot water b Use special tools to drive in the valve guiding pipe to the position as shown in the right figure from the side of the combustion chamber Attention The removed guiding pip...

Страница 24: ...the valve and gently drive it in Check the mating condition and the width of mating line Correction of valve base stand ring Attention Signs of breaking or cracking should not appear on the correction...

Страница 25: ...op surface The insulator should not be deformed while being pressed otherwise it is easy for the valve chamber cover cap to lea 4 6 Installation 1 Installation of valve spring washer and valve oil sea...

Страница 26: ...ver base make identification of the marks for the front and rear directions 1 Assmbling of dustproof sealing strip and cylinder cover 1 Apply lubricating oil at the threads and grooves of the bolts b...

Страница 27: ...Attention These rings are not reusable 2 Removing the three bolts and dismount the water pump principal body 3 Removal of the dustproof sealing stripe 5 3 Clearing 1 Clearing of the mating surface of...

Страница 28: ...lubricating oil pump should be carried out according to the following procedures Oil pan tighten bolt 8 2 N m Oil strainer Oil collector gaeket Oil pump Oil pump gasket Rear oil seal bracket Non reusa...

Страница 29: ...ntion Do not make the oil pan flange section to be deformed 3 Remove the oil collecting filter and its flange Attention The filter flange is not reusable 4 Dismount the oil pump assembly and oil pump...

Страница 30: ...tools may be used to clear the used ones Attention Do not drop the residues into the cylinder body 6 4 Disintegration and assembling of oil pump 6 4 1 Configuration diagram 1 Weather seal 2 Oil pump...

Страница 31: ...f the split pin Attention The split pins are not reusable Attention Pay attention not to make the spring and spring seat sending forth and dropping suddenly while taking off the open pins 5 Removal of...

Страница 32: ...sure the clearance between the rotator and the pump body Benchmark 0 10 0 185mm Limit 0 25mm 2 Routine checks on the pressure relief valve 1 Remove the pressure relidf valve there should be no visible...

Страница 33: ...ks of the exterior and interior gears of the lubricating oil pump should be on the visible side when being assembled into the pump body 4 The new weather seal should be put inside the oil pump cover g...

Страница 34: ...sembling Smear lubricating oil on the new oil seal lip section SST SST 2 Use SST to install the oil seal shown as the right figure 6 6 Assembling 1 Assembling of the oil sealing stands 1 Smear oil sea...

Страница 35: ...pan 1 Clear the mating surface with the cylinder body 2 Apply sealing silica before assembling Grease Letai 5699 Attention The liquid cushion with silica line diameter of 3 4mm without any broken sec...

Страница 36: ...quence 1 Conneting rod cover 2 Connecting rod bearing bush 3 Piston and conneting rod assembly 4 Main bearing cover 5 Crankshaft 6 Crankshaft bush 7 Thrust washer 8 Cylinder block 9 No 1 compression r...

Страница 37: ...rance 2 Remove the bush cover Attention Parts and components of various cylinders should be placed in good order 1 Clean the bush and axle diameter 4 Place clearance gauge on the connecting bearing di...

Страница 38: ...from scraping the cylinder hoe and crankshaft connecting rod axle diameter Then knock the piston connecting rod out with the handle of a hammer Attention Put the parts and components of various cylin...

Страница 39: ...g cover the cylinder walls the axle diameter etc Make thorough checks for any tears and wears as well as other damages 3 Use a clearance 6 gauge to adjust the radial clearance of the crankshaft tighte...

Страница 40: ...pin Remove the piston pin to take off the piston and the connecting rod by using SST 7 3 Clearing 7 3 1 Cylinder body Warning Wear eye glasses during the clearing operation to protect your eyes 1 Use...

Страница 41: ...er if the values exceed the limits Limit 0 03mm Reference Circularity A B or a b Cylindricity A a or B b Reference Cylinder standard diameter 72 00 72 01mm Bottom dead center Top dead center 7 4 2 Pis...

Страница 42: ...13 0 025 2 Check the clearance between the piston ring and the ring groove 1 Use a feeler to measure the rings Benchmark mm Limit mm Primary ring 0 03 0 06 0 12 Secondary ring 0 03 0 06 0 11 3 Check t...

Страница 43: ...piston or the cylinder body it is needed to confirm the clearance of the replaced cylinder once again Datum 0 018 0 030 7 4 4 Crankshaft 1 Check the coaxiality of the main shaft diameter 1 Use the cen...

Страница 44: ...earing lubricating oil to the piston pin use pressurizing device to assemble the piston and the connecting rod Attention Pay attention to the assembling direction when pressing in the piston pin The s...

Страница 45: ...ing stand Attention Smear lubricating oil on the side of the oil sink Apply oil 3 Smear lubricating oil on the friction side opposite to the contact of the bush lower parts Install the parts according...

Страница 46: ...ure the frontwards indication mark on the piston Should be frontwards and assemble the piston connecting rod Ay with SST Attention The cylinder number on the piston connecting rod Ay should be identic...

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