Great Wall Florid. Manual — part 11
GWFLORID Maintenance Manual
42
Transmission
037A Transmission’s Overall External Schematics . . . 43
Main Technical Parameters . . . . . . . . . . . ...43
Transmission's Proper Use and Care . . . . . . . . .44
Technical Specifications for Transmission Installation
and Adjustment . . . . . . . . . . . . . . . . ...44
Areas of Importance . . . . . . . . . . . . . . ...45
Troubleshooting . . . . . . . . . . . . . . . . ..46
037A Transmission Structural Schematics . . . . . . .47
Clutch . . . . . . . . . . . . . . . . . . . . .48
Gear Shift Fork and Fork Shaft. . . . . . . . . . ...49
Transmission Case . . . . . . . . . . . . . . . .50
Disassembling the Input Shaft Subassembly . . . . . .56
Disassembling the Output Shaft Subassembly . . . . ..60
Disassembling the Shift Cover Subassembly . . . . . .64
Disassembling the Differential Subassembly . . . . . .68
43
Transmission
Main Technical Parameters
Basic parameters of the 037A transmission
Max. input torque
115 N·m/4400-5200 rpm
Speed ratio for each gear
3.545
1.913
1.310
0.973
0.804
3.214
Main deceleration ratio
3.944
Odometer speed ratio
31/35 (currently no driven gear)
Center distance (mm)
65
Lubricant capacity (L)
1.8
Control method
Remote cable control
Netweight (kg)
28
Match engine
GW413EF
037A Transmission’s Overall External Schematics
The 037A transmission is a step mechanical transmission with differential, two-shaft front wheel drive
application. The forward gear has adopted the inertia synchronizer gear-shifting mechanism, which offers
smooth and easy gear shifting, reduces noise dramatically, and improves the service life of the gear - important
in achieving the overall economical efficiency. Regarding its control mechanism, the set steel ball and spring
allow the shifting gear to be quick, accurate with solid handling. The 5th gear transmission is equipped with an
interlocking mechanism to prevent accidental switching to reverse, to improve driving comfort and reliability.
GWFLORID Maintenance Manual
44
Transmission's Proper Use and Care
1. Transmission's proper operation
1.1 Shift the gear gently, not excessively.
1.2 Do not start with high speed.
1.3 To avoid premature abrasion of the gear shift fork, do not rest your hand on the gear lever while driving.
2. Model number of the lubricant to be used:
GL-4 80W-90 (For China domestic model)
GL-4 75W-90 (For alpine region model)
GL-5 140 (For high-temperature region model)
Caution: Please only use the lubricant with model numbers specified by the Great Wall Motor Co., Ltd.
Do not mix lubricants with different model numbers. Only fill with clean lubricant.
3. Areas of importance for new vehicle usage:
3.1 Before using a new vehicle, be sure to check the transmission and all exposed connectors and fastening
pieces, so as to avoid failure due to faulty installation or loose connections.
3.2 Since the new vehicle is still in the run-in period, the transmission's lubricant should be replaced after 5000 km
distance.
4. Transmission three-level maintenance:
4.1 Transmission level-one maintenance: During the first level of maintenance, the liquid level of the lubricant
should be checked to ensure that it is up to the oil-filling mouth. Add more if insufficient. Excessive low
oil level can lead to ineffective lubrication, as well as burning of the bearings and gears. Excessive high oil
level, however, can overheat the transmission or cause oil to leak. In addition, during the first level of main-
tenance, the breather plug should be checked and cleaned. If the breather plug is clogged, internal pressure
will build up and oil will leak from the transmission.
4.2 Transmission level-two maintenance: The transmission's lubricant should be replaced the first time that the
vehicle undergoes the second level of maintenance. Clean the transmission with kerosene. The quality of the
lubricant should be inspected during the future second level of maintenance practises. The lubricant should
be replaced if diluted, gummy, or dirty.
4.3 Transmission level-three maintenance: During the third level of maintenance, it should be removed for in-
spection, cleaning, and oil changing.
Technical Specifications for Transmission Installation and Adjustment
Inspect the axial play (δ) between the synchronizer ring and the gear shaft
Gear
(δ1)
(δ2)
(δ3)
(δ4)
(δ5)
Standard axial play (mm)
0.7-1.7
0.7-1.7
0.7-1.7
0.7-1.7
0.7-1.7
Gear
(δ1)
(δ2)
(δ3)
(δ4)
(δ5)
Standard axial play (mm)
0.1-0.4
0.1-0.6
0.1-0.4
0.1-0.6
0.1-0.55
Check the axial play (δ) between each gear
45
Transmission
Areas of Importance
Removal
During removal, all components should be gently handled to avoid knocking, especially the joint surface.
All components should be placed in the proper order to avoid misplacing and mistaking.
Installation
1. Clean all parts before installation (except rubber pieces and gaskets).
2. All oil seals, shaft retainers, and elastic pins should not be reused.
3. All rubbing surfaces should be coated with lubricant, and the lips of all oil seals should be coated with
grease.
4. During installation of the bearings, do not use any kind of rolling element to transmit pressure, and
make sure not to tilt it.
5. During the installation of synchronizer components, the two sides of the spring piston's openings
should alternate.
6. When the transmission is operating under normal working conditions, there should be no lubricant
leakage from any of the parts.
Transportation and storage
1. When transporting a transmission, make sure the conditions are dustproof and rainproof, as well as
take proper care not to damage it due to jolting, shaking, removal, or installation.
2. Transmission assembly should be stored in a ventilated, dustproof, and dry place.
3. Users with special transportation or storage requirements should have another discussion to reach an
agreement on this matter in the supply contract.
Use parts
Bolt code
Specifications
Quantity
Tighten-
ing torque
(N·m)
Differential case × differential ring gear
037-2303309
M12 × 1.0
6
123.6
Clutch housing × reverse gear arm
bracket subassembly
037-1702073
M8 × 1.25
2
17.2
No. 1 gear shift fork shaft × No. 1 gear
shift fork
037-1702056
M6 × 0.75
1
15.7
No. 2 gear shift fork shaft × No. 2 gear
shift fork
037-1702056
M6 × 0.75
1
15.7
Transmission case × clutch housing
037-1701012
M8 × 1.25
13
29.4
Transmission case × manipulation lid
subassembly
037-1702051
M8 × 1.25
4
12.0
Transmission case × position mechanism
component
037-1702042
M18 × 1.5
1
36.8
Transmission case × reverse gear idler
shaft × sealing ring
037-1701404
M8 × 1.25
1
29.4
Transmission case × hexagon head plug
037-1701016
M18 × 1.5
2
39.2
Transmission case × reverse gear switch
subassembly
037-1701022
M18 × 1.5
1
40.2
Transmission case × cable bracket
037-1701019
M8 × 1.25
4
11.3
Clutch housing × clutch slave cylinder
subassembly
037-1601019
M8 × 1.25
2
11.3
Select lever assembly × gear shifting
block
037-1702027
M8 × 1.25
1
38.0
Clutch housing × release fork support
nail
037-1601011
M10 × 1.25
1
36.8
Counterweight component × shift lever
component
037-1702030
M8 × 1.25
2
20.0
Release fork support nail
1
29.4
Thread fastening piece tightening torque table
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