Great Wall. Service manual for chassis and body (2006) — page 7
MT-27
Transmissio
Output Shaft Assembly(Assembly of Output Shaft Assembly)
SST
SST
(b) Smear the gear oil on the needle bearing of gear of 1st gear.
(c) Assembly the gear components of 1st gear,synchronized
ring,needle bearing and sleeve of gear of 1st gear.
(d) Install the assembly on the output shaft,and align the notch
of synchronized ring and sliding block .
(e) Turn the sleeve of 1st gear shaft to align the it with the
locking ball.
8.
Installation for rear bearing of output shaft
Fix the bearing of output shaft to the output shaft with SST and
pressing machine, make the notch of locking ring of output
shaft rear bearing expose to the tail.
Remark: Hold the sleeve of gear of 1st gear and don
t let it fall
off.
9.
Install the gear of 5th gear
Fix the gear of 5th gear with SST and pressing machine.
10. Assembly the snap ring of shaft
(a) To choose one snap ring which make the axial clearance
be Min, and install it on the shaft.
Max clearance
0.1mm
(b) Knock the snap ring of shaft of 5th gear tightly with
screwdriver and hammer.
11. Measure the axial clearance of gear of 1st gear
Measure the axial clearance of gear of 1st gear with feeler
gauge
Standard clearance:
For the transmission made by Shang Chi:(0.15
0.33)mm
For the transmission made by Tang Chi:(0.09
0.33)mm
MT-28
Transmission
Output Shaft Assembly(Installation of Output Shaft Assembly)
12. Fix the drive gear of speedometer
(a) Install the locking ball and drive gear.
(b) Install the drive gear of tachometer with plier for shaft
shield ring
MT-29
Gear Box
Countershaft Assembly and Reverse Idle Gear Assembly (Element Drawing, Countershaft Assembly Disassembly, Testing and Assembly)
Countershaft Assembly and Reverse Idle Gear Assembly
Element drawing
Disassembly, Testing and Assembly of
Countershaft
1.
Tear down the coupling gear, sliding block and the five-
speed spring collar.
Tear down the coupling collar, three sliding blocks and the two
five-speed spring collars with screwdriver.
2.
Measure the radial clearance of the reverse idle gear
with dial gauge
Standard clearance:
Shang chi:0.05mm
Tang chi:(0.10~0.30)mm (Tang chi is the close Spline
match, which belongs to radial clearance)
Max clearanle:
Shang chi:0.05mm
Tang chi:(0.10~0.30)mm (Tang chi is the close spline
match, which belongs to radial clearance)
front bearing of
countershaft
intermediate-gear shaft
steel ball
rear bearing of
countershaft
stop ring of the rear bearing
of countershaft
five-speed thrust washer
five-speed needle
bearing
sliding block of
synchronize
five-speed cluster
engagement sleeve of the
five-speed synchronizer
spring collar
synchronizer tooth
of spring collar
axial pressing plate
for reverse idle gear
reverse idle
gear shaft
reverse idle gear
cluster
coupling gear around
the five-speed gear
retainer ring for front
countershaft
stop ring for front bearing
of countershaft
MT-30
Gear Box
Countershaft Assembly and Reverse Idle Gear Assembly ( Countershaft Assembly Disassembly, Testing and Assembly)
3.
Reverse gear inspection
Measure the diameter of needle bearing with micrometer.
Standard diameter
Shang Chi
26.000mm
Tang Chi
(25.98
26.00)
Limit Diameter
Shang Chi
25.984mm
Tang Chi
25.86mm
4.
Check the synchronizing ring
(a)
Run the retainer ring for shaft and put it onto the shaft to
check itsstopping performance
(b)
Measure the clearance between the rear section of the
synchronizing ring and the spline.
Standard clearance:
Shang Chi
(1.5
1.8)mm
Tang Chi
(1
2)mm
Limit clearance: 0.8mm
5.
Measure the clearance of the shift fork and gear sleeve.
Test the clearance of the shift fork and gear sleeve with the
feeler gauge.
Max clearance:
Shang Chi: 0.54mm
Tang Chi:1.0mm
6.
Change the bearing
The front bearing of the reverse gear shall be changed when
necessary
(a)
Pry down the retainer ring for shaft with a split-ring-type
pliers.
MT-31
Gear Box
Counter Shaft Assembly and Reverse Idle Gear Assembly (Assembly of Reverse Gear Assembly)
SST
sleeve wrench
front
(b)
Press out the bearing with SST.
(c)
Press in the bearing, side race and inner race with the
socket spanner.
(d)
Select the split ring that leave the radial clearance to
minimum level, and mount it on the shaft.
7.
Mount the engagement sleeve of synchronizer, sliding
block and the five-speed spring collar.
Remark: the opens of the spring collar shall be in non-
alignment
Encase the sliding pad into the gear hub and then cover the
gear sleeve.
Mount the spring retainer under the sliding pad.
Notice, the opening direction of the spring retainer shall
not face-to-face.
Mount of Reverse Gear Assembly
1.
Check the reverse idle gear
Measure the radial clearance of the reverse idle gear with dial
gauge.
Standard clearance:
Shang Chi
0.05mm;
Tang Chi
(0.04
0.08)mm
Max clearance
Shang Chi
0.05mm;
Tang Chi
0.13mm
MT-32
Gear Box
Counter Shaft Assembly and Reverse Idle Gear Assembly (Assembly of Reverse Gear Assembly)
2.
Measure the clearance between the reverse idle gear
and gearshift yoke block
Measure the clearance between the reverse idle gear and the
gearshift yoke block with feeler.
Standard clearance:
Shang Chi
0.2mm
Tang Chi
(0.05
0.27)mm
Max clearance
Shang Chi
0.35mm
Tang Chi
0.5mm
MT-33
Gearbox
Rear Housing Assembly (Element Drawing, Change of Oil Seal, Change of Shaft Bush)
Rear Housing Assembly
Element drawing
Change of Oil Seal
1.
The rear housing oil seal shall be changed where necessary.
(a) Dismantle the oil seal with SST.
(b) Press in the new oil seal with SST
2.
The driven oil seal of speedometer shall be changed
where necessary
(a) Pry out the oil seal with SST.
(b) Tap the new oil seal into the shaft bracket with SST.
Change of Shaft Bush
The shaft bush shall be changed where necessary
(a) Tear down the oil seal and dust bush.
(b) Heat the ending parts of extension frame to 80
-100
in
the oil groove.
(c) Tear down the shaft bush with SST and mount on the new
shaft bush.
SST
SST
SST
SST
SST
oil reservoir
locating spring bolts and
spring cylindrical pin
rear housing oil seal
assembly
rear housing dust
cover
oil groove
component element
o f p o s i t i o n - l i m i t
mechanism
rear housing
cluster
MT-34
Gearbox
Rear Housing Assembly (Inspection On and Change of The Component Elements of Position-Limit Mechanism)
Inspection on and change of the component
elements of position-limit mechanism
1.
Tear down the component elements of position-limit
mechanism
(a) Dismantle the bolts with the torque socket spanner.
(b) Punch out the spring cylindrical pin with the drift punch
and hammer.
(c) Tear the component elements of position-limit mechanism
down.
2.
Check the component element of position-limit mechanism.
Run and propel the limit stop and the limit stop can return
to the original location automatically, otherwise, change the
limit stop.
3.
Mount the component element of position-limit mechanism
(a) Mount the component elements of position-limit mecha-
nism in the rear housing.
(b) Tap the spring cylindrical pins in with drift punch and
hammer as shown in the drawing.
MT-35
Gearbox
Rear Housing Assembly (Inspection On and Change of The Component Elements of Position-Limit Mechanism)
(c) Coat the sealing agent on the bolt thread.
(d) Propel the plug with the torque socket spanner.
MT-36
Gearbox
Bearing Front Cover Assembly (Element Drawing, Change of Oil Seal)
Bearing Front Cover Assembly
element drawing
bearing front cover
assembly
washer
front cover oil seal
assembly
Change of oil seal
The oil seal of the bearing front cover shall be changed where
necessary
(a)
Pry out the oil seal with screwdriver
(b)
Press in the new oil seal with SST.
Depth of oil seal:
Upper tooth
9.5mm
Tang tooth
(12.4
0.4)mm
SST
MT-37
Assembly of Gearbox
1.
Mount the output shaft in the central link plate
(a)
Tap the output shaft in the central link plate while pulling
it, until mounting it in the central link plate.
(b)
Mount the stop ring of the rear bearing of output shaft in
with the split-ring-type pliers.
Remarks: The stop ring shall flush with the surface of central
link plate.
2.
Mount the input shaft in output shaft
(a)
Coat the MP lubricant on the bearing with 13 needle
rollers, and mount the needle rollers in input shaft.
(b)
Propel the input shaft in the output shaft and flush the
groove of synchronizing ring with the sliding block.
3.
Mount the countershaft in the central link plate
(a)
Mount the stop ring on the rear bearing of countershaft
with split-ring-type pliers.
alignment
Gearbox
Assembly of Gearbox
MT-38
Gearbox
Assembly of Gearbox
(b)
Mount the intermediate-gear shaft in the central link
plate, and mount the backup rear bearing with SST while
holding the intermediate-gear shaft.
4.
Mount the baffle of rear bearing of output shaft
Mount and propel the bolts with torque socket spanner.
Tightening moment
Tang tooth
(17
22)N
m
Upper tooth
(12
17)N
m
5.
Mount the reverse idle gear and shaft
(a)
Mount the reverse idle gear and shaft.
(b)
Mount the axial pressing plate of the reverse idle gear,
and then propel the bolts tightly.
Tightening moment
(15
20)N
m
6.
Mount the bracket cluster of reverse rocker arm
Mount the reverse rocker arm bracket and propel the two bolts
tightly.
SST
MT-39
locking ball
socket spanner
Gearbox
Assembly of Gearbox
7.
Mount the steel ball and the five-speed thrust washer.
8.
Mount the five-speed gear cluster
(a)
Coat the gear oil on the needle bearing.
(b)
Mount the five-speed gear cluster.
9.
Mount the synchronizing ring and the fifth coupling gear
(a)
Mount in the synchronizing ring and the fifth coupling
gear.
(b)
Dismantle the old central link plate from the table vice.
(c)
Put the gearbox straightly as shown in the drawing.
(d)
Flush the groove of synchronizing ring with the sliding
block and mount the fifth coupling gear with pressure
machine.
(e)
Mount the new central link plate in the table vice.
MT-40
Gearbox
Assembly of Gearbox
10. Mount the split ring
(a)
Select the retainer for shaft that leaves the minimum
radial clearance, which is not larger than 0.1mm.
(b)
Mount in the retainer for shaft with copper bar and
hammer.
(c)
Mount the spring cylindrical pin of third-fourth-speed
gearshift fork.
Notice: The pin port should align with the direction of the
shaft.(Same sa below)
11. Measure the radial clearance of the five-speed gear
cluster.
Measure the radial clearance of the five-speed gear cluster
with the measuring gauge.
Standard clearance
Shang chi
(0.135
0.325)mm
Tang chi
(0.1
0.3)mm
12. Mount the third-fourth-speed gearshift fork axle and the
first-second-speed gearshift toggle fork as well as the
third-fourth-speed gearshift toggle fork
(a)
Mount the first-second speed and third-fourth speed
gearshift toggle forks.
(b)
Mount the third-fourth-speed gearshift fork axle in the
central link plate and the gearshift toggle fork.
MT-41
Gearbox
Assembly of Gearbox
13. Mount the first gearshift fork axle and first gearshift fork
(a)
Coat the MP lubricating on the interlocking guidepost
and mount the interlocking guidepost on the first-second-
speed gearshift fork axle.
(b)
Mount the interlocking pin in the central link plate with
the magnetic bar.
(c)
Mount first-second gearshift fork axle in the first gear-
shift toggle fork and central link plate.
d)
Mount the setting bolts of the first toggle fork and tighten
them.
Tightening moment
Upper tooth
(15
20)N
m
Tang tooth
(13
17)N
m
14. Mount the reverse yoke rod, reverse rocker arm and
reverse yoke block
(a)
Mount the reverse yoke rod, reverse rocker arm and
reverse yoke block together.
(b)
Mount the reverse rocker arm on the reverse rocker arm
bracket.
(c)
Coat the MP lubricant on the interlocking guidepost and
mount the guidepost on the reverse gearshift fork axle.
MT-42
Gearbox
Assembly of Gearbox
(d)
Mount the interlocking pin in the central link plate with
the magnetic bar.
(e)
Mount the reverse gearshift fork axle in the reverse yoke
rod and central link plate.
(f)
Mount the spring cylindrical pin with the drift punch and
hammer.
15. Mount the five-speed reverse gearshift guide block and
five-speed reverse gearshift fork axis.
(a)
Mount the five-speed reverse gearshift guide block in the
five-speed reverse gearshift guide shaft.
(b)
Mount the reverse gearshift fork axle in the next step.
(c)
Mount the steel ball in the five-speed gearshift guide
block with the magnetic bar.
(d)
Mount the five-speed gearshift fork axle as shown in the
drawing.
(e)
Mount the steel ball in the central link plate with mag-
netic bar.
(f)
Mount the five-speed gearshift fork axle in the central
link plate.
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