Great Wall service chassis and body Manual — part 22
TF-29
Transfer Box
Washing, Checking, Up-Keeping and Exchanging (Maintenance or Change of Gear or Chain Sprocket Gear)
(d)
The gear, being peeled off at the center of one side of
contact face, may be repaired for reuse
(e)
The gear, being peeled off in the center of contact area,
shall be changed.
(f)
The gear, being peeled off at two sides of tooth top, shall
be changed.
TF-30
Transfer Box
Washing, Checking, Up-Keeping and Exchanging (Attachment for Inspection Maintenance or Change of Parts)
Change the parts and fittings as requirement
Attachment for Inspection Maintenance or Change of Parts
Checking items
Acceptance/Refusal
Parts (items)
All parts (including
all springs)
Crack inspection, distortion inspection and ero-
sion inspection
All parts with crack, all parts that are bended,
distorted or poor in round bouncing are refused.
All threaded parts
Thread inspection for buckle missing or other
damage
Those parts cannot be threaded or bottomed in
overlap manner shall be refused.
F l a n g e a n d f o r k
flange
Please refer to the paragraph of
inspection to
check the spline.
Please refer to the
inspection paragraph for
spline inspection.
Velocity sensor, mo-
tor assembly
Parts of electric clutch
system
Please refer to the part of electric appliance
Sliding bearing
Inside surface inspection for the sliding bearing
In the case that the bearing has pitting corrosion
or other damage, refuse it.
Ball bearing
Check visually the ball and track of the ball
bearing to see whether there is damage such as
adhesive bonding, pitting corrosion, etc.
Ensure that the bearing are all lubricated, run the
outer race of the bearing while holding the inner
one to feel whether there is poor running or
corrosion, the bearing shall be run smoothly
without excessive clearance.
Refuse to use the damaged bearing;
Refuse to use the damaged or loose bearing; or
Check the axial clearance to see whether it
exceeds 0.23mm.
Needle bearing
Check the bearing needle roller and track to see
whether there is damage such as adhesive
bonding, pitting corrosion, etc.
Refuse to use the damaged bearing.
The rear cover, front
body and front hous-
ing of transfer box
Check to see whether there is burr on the cou-
pling face or other damage that impedes assem-
bling or sealing.
Clear away the burr according to the paragraph
of
inspection, otherwise, change the dam-
aged element
Rear cover of trans-
fer box
Check the bearing hole
Refuse to use the assembly that has pitting
corrosion
Odometer gear
Check the gear teeth referring to the Inspection
Paragraph
Refer to the gear or chain sprocket inspection in
inspection paragraph.
Clutch shell, joint
outer gear sleeve and
joint cover
Check the spline according to the Inspection
paragraph
Refer to the spline inspection of
inspection
paragraph
Locking sleeve
Check the wear or damage of the toggle fork
groove
Refuse the parts with step slipping or damage.
Shift guide shaft
Check the deformation situation
Check the burr or other damage on outer race
Check the wear of outer race
Refuse to use the bend shaft; clear away the burr
according to the
inspection paragraph, oth-
erwise refuse to use.
Refuse to use the shaft with step slipping or
other damage.
Shift toggle fork
Check whether there is wear or damage at the
location where the toggle fork combines with
the shifting cam and gear sleeve.
If any step slipping or damage is found, refuse
to use it.
TF-31
Transfer Box
Washing, Checking, Up-Keeping and Exchanging (Attachment for Inspection Maintenance or Change of Parts)
Attachment for Inspection Maintenance or Change of Parts
Parts (items)
Checking items
Acceptance/Refusal
Shift toggle fork as-
sembly
Check the wear and damage of the inserted face
that is combined with gear sleeve;
Check to see whether the contact roller can
rotate freely or is damaged or not
If any step wear or damage is found, the inserted
face shall be refused to use.
If the contact runs difficultly or is damaged, a
new pin-contact roller and new cage assembly
shall be used.
Driving and driven
chain sprocket
C h e c k t h e s p r o c k e t t e e t h a c c o r d i n g t o
the
inspection paragraph
Refer to the sprocket teeth inspection of
inspection paragraph
Shift toggle fork as-
sembly
Check the inner diameter that matches with the
output shaft
If any pitting corrosion or damage is found,
refuse to use it.
Driving chain
Check the step sliding, looseness or damage of
pin or connecting element
Refuse to use the weary or damaged driving
chain
Filtering screen
Check to see the filtering screen is clean or with
small hole or damage
Clean it where necessary, and abandon the dam-
aged one.
TF-32
Transfer Box
Washing, Checking, Up-Keeping and Exchanging (Attachment for Inspection
Maintenance or Change of Parts
Pump shell
Check to see whether there is pitting corrosion
or step slipping
Abandon it in case it is seriously damaged or
worn
Output shaft
Check the spline, check the surface that matches
with bearing and check the distortion according
to
inspection paragraph
Refer to the spline inspection of
inspection
paragraph;
Refuse to use the one with pitting corrosion or
damage;
Refuse to use the one that is bending or poor in
round bouncing.
Deceleration hub
Check the spline of chain sprocket and check the
wear or damage of the location where matches
with the toggle fork according to the
inspection paragraph
Refer to the spline inspection of
inspection
paragraph; refuse to use the one with step slid-
ing or damage.
Front output shaft
Check the surface where matches with the
bearing;
Check the spline according to the
inspection:
paragraph
Refuse to use the one with pitting corrosion or
damage
Input shaft
Check the spline according to the
inspection
paragraph
Check the distortion
Refer to the spline inspection of
inspection
paragraph;
Refuse the one that is bending or poor in round
bouncing.
Thrust washer and
thrust disc
Check the pitting corrosion
Refuse to use the one with pitting corrosion or
damage
Sun wheel
Check the gear teeth and spline according to the
inspection paragraph
Refer to the gear teeth inspection and spline
inspection of
inspection paragraph.
Planetary mechanism
assembly
Check the gear teeth according to the
inspection paragraph;
Check the wear and looseness of the planetary
gear pin; check the wear of thrust gasket
R e f e r t o t h e g e a r t e e t h i n s p e c t i o n o f
inspection paragraph;
If any step sliding or pitting corrosion is found,
refuse to use it
Electric shifting cam
Check to see whether there is step slipping or
pitting corrosion
If any step sliding or pitting corrosion is found,
refuse to use it
Shift guide shaft
Check to see whether there is step slipping or
pitting corrosion
Check the distortion situation
If any step sliding or pitting corrosion is found,
refuse to use it
Refuse to use the bending one
Planetary gear ring
Check the match performance of it with the
transfer box housing
Check the gear teeth according to the
inspection paragraph
Check the transfer box housing assembly to see
whether the gear ring is loose or not in the
housing
R e f e r t o t h e g e a r t e e t h i n s p e c t i o n o f
inspection paragraph
Transfer box housing
Check the holes matches with the bearing
Abandon the one with pitting corrosion or
damage.
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