Chery QQ6 (S21) / S12LHD. Manual — part 82

32

Figure 33

Follow by installation of screw of reverse gear idler shaft. Align the screw of reverse gear idler shaft

with the threaded hole on the idler shaft, and then tighten it with the tightening torque as 38±2.5Nm; after

that, tighten bleeding plug with tightening torque as 44±3Nm; finally, install oil limit plug onto the

transmission, but do not tighten it then. See Figure 34.

Figure 34

10. Refilling and volume regulation of transmission lubricant

After the transmission is installed onto the vehicle, park the vehicle on a flat road surface, then use the

tool for refilling to refill transmission lubricant. The lubricant refilled should at least conform to API GL-4

SAE 75W-90 specification. Refill through installation hole of speed sensor as shown in Figure 35 with the

refilling volume as 1.8L. after refilling, open the oil limit plug to regulate the lubricant to specified volume,

and then tighten the oil limit plug with the tightening torque as 44±3Nm.

Oil-Limiting Plug

Screw of reverse gear idler shaft (with

tightening torque as 38±2.5Nm)

Bleeding plug (with tightening torque

as 44±3Nm)

33

Installation hole of speed sensor

Oil limit plug (with tightening torque as 44±3Nm)

Figure 35

After the above steps, assembly and regulation to the transmission assembly are accomplished.

34

II. Tightening Torque Table for Fasteners

Position

Tightening torque (N.m)

Reverse gear rocker arm bracket bolt

25±2

Connecting bolts for clutch and

transmission housings

25±2

Reverse gear idler shaft screw

38±2.5

Connecting bolts for gearshift and

transmission housings

25±2

Gearshift shaft locating seat assembly

32±2.5

Reverse switch assembly

20±2

Fork shaft locating seats of gears

20±2

Bleeding\oil limit plug

44±3

Clutch release fork bolt

20±2

Clutch release arm bolt\nut

20±2

Selector Lever Bracket Bolt

25±2

Main decelerator driven gear bolt

130±5

Reverse gear lockup mechanism bolt

18±2

35

Chapter Four

General Failures and Troubleshooting

Failure

status

Possible reason

Troubleshooting

Damaged input or/and output shaft bearing(s)

Replace

the

bearing

Gear tooth faces damaged due to knocking, burr
or pit corrosion existing, or poor contact between
them.

Repair or replace
the gear

Incorrect gear shaft position and clearance

Check and adjust

Low oil level, insufficient lubrication

Fill

oil

to the

specified level

Excessive
or
abnormal
noise

Foreign matter(s) existing in the assembly

Check and remove

Excessively worn or damaged oil seal(s)

Replace

Uneven sealant smearing or damaged seal
gasket(s)

Replace the seal
gasket(s) or sealant

Failure to timely recondition junction surface(s)
damage due to knocking

Check and repair

Oil leakage

Damaged differential bearing

Replace

Improper clutch adjustment and incomplete
release.

Adjustment

Improper

gearshift

transmission

system

adjustment or movement obstruction occurring

Check and adjust

Difficult to
implement
gear shift

Synchronizer ring(s) fails to work

Replace

Worn synchronizer gear sleeve(s) or tooth cone
surface(s) of gear junction

Replace

related

components

Gear

jump

Improper

gearshift

transmission

system

adjustment

Check and adjust

Loose gearshift transmission system

Overhauling

No gear

Loose gearshift arm of transmission

Repair

Metal impurities contained in transmission oil

Replace

Insufficient

lubrication

or

unqualified

transmission oil

Replace

Abnormall
y damaged
bearing(s)

Using of unqualified bearing(s)

Replace