Self-Study Programme 372 Shiftmatic gearbox 0B81.pdf

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Service Training
Commercial
Vehicles
Self-study Programme 372
The Shiftmatic Gearbox 0B81
Design and Function
In addition to the two variants of the mechanical manual gearbox, the Crafter is also available with an automated
manual gearbox – the Shiftmatic gearbox.
This gearbox is basically the same as a manual gearbox on the inside. However, additional hydraulic components
combined with control technology allow gear changes to be automated.
You can use both an automatic shift program and a manual shift program.
The Shiftmatic gearbox is a both practical and low-cost alternative to an automatic gearbox.
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NEW
Important
Note
The self-study programme shows the design and
function of new developments.
The contents will not be updated.
For current testing, adjustment and repair
instructions, refer to the relevant
service literature.
2
Contents
In Brief . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Gearbox Mechanics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Hydraulics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Electronics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Test Yourself . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
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In Brief
Introduction
The Shiftmatic gearbox with the code 0B81 belongs to the group of fully-automatic gearboxes. This gearbox is
based on the manual gearbox 0B7 - 330 Nm that is also used in the Crafter.
Gear changes in the Shiftmatic gearbox are either completely automatic or carried out as selected by the driver.
Even though the Shiftmatic gearbox has a clutch for power transmission, there is no clutch pedal like with automatic
gearboxes. The clutch is operated by a hydraulic system.
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The advantages of this gearbox are:
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Cheaper price and lower fuel consumption than an automatic gearbox
Lower exhaust emissions than an automatic gearbox
Lower weight compared with an automatic gearbox
Less work for driver thanks to simple operation
Short traction interruptions
Low-wear, smooth and comfortable gearshifts
Hill start assist as standard
4
Technical data
Developer/manufacturer
Name
Gearbox type
Mounting
Gearbox control
DaimlerChrysler AG
Shiftmatic 0B81
Automated 6-speed manual
Front/longitudinal mounting
Electro-hydraulic system, consisting of sensors/actuators and
gearbox control unit
3 shafts
Drive shaft, layshaft, output shaft
Max. 330Nm
Single-plate, self-adjusting dry clutch
SAC “Self Adjusting Clutch”
Electro-hydraulic
G 009 317 A2
1.5 l
320 000 km/10 years
G 004 000 M2
PENTOSIN CHF 202
0.5 l lifetime filling
572.8 mm
Number of shafts
Torque transfer
Clutch
Clutch operation
Gearbox oil specification
Gearbox oil capacity
Change interval
Hydraulic oil specification
Hydraulic oil capacity
Length
(distance from clutch bell housing – output flange)
Weight
52.5 kg
5

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