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PAGE 1 - b2ca0gp0 - presentation : 4HP20 automatic gearbox
presentation : 4HP20 automatic gearbox
1 Presentation
6
1
2
7
5
4
3
- Fig. : 1 -
( 1 ) water to oil heat exchanger.
( 2 ) multifunction switch ( CMF ).
PAGE 2 - b2ca0gp0 - presentation : 4HP20 automatic gearbox
( 3 ) torque converter.
( 4 ) differential.
( 5 ) reduction gear.
(6) brake.
(7) clutch.
The 4HP20 gearbox is a transverse automatic gearbox with 4 forward gears and electronically controlled gear
selection designed and manufactured by ZF.
The 4HP20 gearbox is fitted with an auto-adaptive ECU used for managing the converter, gear changes and
specific programs.
2 Identification
2.1 Gearbox
8
ZF
1019
9
4HP20
10
- Fig. : 2 -
(8) the serial number.
( 9 ) ZF parts list number.
( 10 ) component number.
PAGE 3 - b2ca0gp0 - presentation : 4HP20 automatic gearbox
2.2 Hydraulic valve block connections
11
12
- Fig. : 3 -
(11) date of manufacture.
( 12 ) ZF parts list number.
2.3 ECU
PAGE 4 - b2ca0gp0 - presentation : 4HP20 automatic gearbox
13
22
14
21
15
20
16
19
17
18
- Fig. : 4 -
( 13 ) equipment status (hardware status).
( 14 ) status of program data (software status).
(15) date of manufacture.
(16) the serial number.
(17) reference.
( 18 ) customer number.
( 19 ) customer number barcode.
( 20 ) ZF parts list number.
( 21 ) ZF barcode number.
( 22 ) order number.
N.B. : The ECU identification is located in the identification menu of the diagnostic
tool.
3 Description
PAGE 5 - b2ca0gp0 - presentation : 4HP20 automatic gearbox
A
B
C
- Fig. : 5 The gearbox is essentially composed of 3 elements :
PAGE 6 - b2ca0gp0 - presentation : 4HP20 automatic gearbox
• A : the converter housing
• B : the mechanism housing
• C : the differential housing
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