Chery QQ6 (S21) / S12LHD. Manual — part 75

4

II. Driving Characteristics of QR513 Transmission

This transmission achieves five forward gears and one reverse gear through three groups of

synchronizers and two shafts-input shaft and output shaft; all forward gears adopt conventional engagement

system while reverse gear adopts a gliding idler device. The synchronizers of the first and second gears are

installed on output shaft while the synchronizers of the third, fourth and fifth gears are installed on input

shaft. When the transmission is shifted to various gears, these synchronizers will engage with corresponding

gear hub to enable transmission of power, and then the driving gear of main decelerator will drive the driven

gear of main decelerator and differential assembly to rotate, which will drive the drive shaft to drive the

wheels to rotate.

III. SN of QR513 Transmission

1. Print position of SN of QR513 transmission

The print position of SN of QR513 series transmission is as shown in the figure:

2. Composition and connotation of SN of QR513 transmission

SN of QR513 series transmission is consisted of model and leaving factory number of the transmission case.

Position of number

5

1) Model of the transmission case

Model of the transmission case is composed of code QR, number of shift gears of the transmission,

maximum transmission torque, characteristic code and structure specification number.

A complete transmission case model is as follows:

□ □ ○ ○○ □ □ □

Structure specification number

Characteristic code

Maximum transmission torque (kg·m)

Number of shift gears of the transmission case

Code QR

Among which, ○ indicates an Arabic numeral while □ indicates a letter.

2) Leaving factory number

Leaving factory number is composed of endnote of assembly part number (for that without endnote, us

AA), character code of the year of production, character code of the month of production, sequence

number of this transmission case among the transmission cases manufactured in that month and start

stop sign “*”. See Table 1 and Table 2 for check list of character codes of the year and of the month.

Complete form of leaving factory number of a transmission case is as follows:

*

□ □

□

□

○○○○○ *

Character code of the month

Among which, ○ indicates an Arabic numeral, □ indicates a letter and indicates an Arabic numeral or a

letter. The endnote locates at tail end of the part code, for a fundamental model, no endnote. The endnote

should be modified when modification is made to structure, dimension, material, heat treatment requirements

and surface treatment etc. of the part or assembly on the basis of original product. The English letter in the

code should be upper case letter (use in sequence with “A” as the first), in order to avoid confusion, do not

use “I”, “O” and “X”. When the modification does not affect interchangeability, use “A” as the first; when

the modification affects interchangeability, skip “A”, use “B” as the first.

Table 1 Character Codes Indicating the Years

Year

Code

Year

Code

1999

X

2015

F

2000

Y

2016

G

2001

1

2017

H

2002

2

2018

J

2003

3

2019

K

Sequence number among the product of the
same model manufactured in that month

Character code of the year

Endnote of assembly part number

6

2004

4

2020

L

2005

5

2021

M

2006

6

2022

N

2007

7

2023

P

2008

8

2024

R

2009

9

2025

S

2010

A

2026

T

2011

B

2027

V

2012

C

2028

W

2013

D

2029

X

2014

E

2030

Y

Table 2 Character Codes Indicating the Months

Month

Code

Month

Code

January

A

July

G

February

B

August

H

March

C

September

J

April

D

October

K

May

E

November

L

June

F

December

M

3) Illustration

For example: QR513MHA MH5H00001 indicates the first transmission case with the model as

QR513MHA manufactured in August, 2005.

IV. Specification of QR513 Transmission

QR513 Series Transmission

Type

Machine Gear Mesh

Model

QR513MHA

QR513MHB

Gear shift

Velocity

Ratio

Teeth Ratio

Velocity

Ratio

Teeth Ratio

First Gear

3.545

39/11

3.167

38/12

Second Gear

2.05

41/20

2.05

41/20

Third Gear

1.423

37/26

1.423

37/26

Fourth Gear

1.065

33/31

1.065

33/31

Fifth Gear

0.865

32/37

0.865

32/37

Reverse Gear

3.364

37/11

3.364

37/11

Main reduction ratio

4.056

73/18

75

16

7

Speedometer

0.806

29/36

0.806

29/36

Largest input torque

130 Nm

Lubricant oil type

GL-4 75W-90

Volume of lubricant

1.8L

V. Maintenance Instruction

l In order to ensure maintenance quality of the transmission, when operating, please be careful

and ensure cleanness of each part of the transmission.

l Use appropriate tools or special tools.
l Strictly follow the specification to assembly or adjustment to maintain so as to ensure that the

transmission can accomplish a favorable working position.