38 BT 45
Removing and installing shift 
fork and driver
: Take out the screws (1).
: Remove the shift fork (2) with 
retaining plate (3).
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1
2 3
: Take the driver (1),  spring (2), 
ball (3) and O-ring (4) out of the 
gearbox housing.
Install in the reverse sequence
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3
1
4
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: When fitting the driver, make sure 
that its peg (arrow) points 
upwards.
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: Coat the shift fork guide (arrow) 
with gear lubricant, b 11, before 
installing the shift fork and 
retaining plate.
: The driver’s peg must engage the 
shift fork guide (arrow).
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Assembling the left-hand 
gearbox housing
– Clean the sealing faces of the 
gearbox housing with a standard 
solvent-based degreasant 
containing no chlorinated or 
halogenated hydrocarbons 
1 2
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-b 11
: Push the oil seal (2) onto the 
shaft (1).
: Place the shaft (1) in the gearbox 
housing.
: Make sure that ball bearings and 
oil seal are corrected seated 
(arrows).
: Check that output gear (1) is 
located in the shift fork (2).
2
1
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