jost JSK 39 - 4.5 Uncoupling a Semi-Trailer; 4.6 Checking the Locking Mechanism

4 Operation
4.5 Uncoupling a semi-trailer
Park the vehicle on flat, firm ground.
Secure the semi-trailer to prevent it rolling away.
Extend the landing gear as described in the operating manual
until the fifth wheel coupling has almost no strain on it.
Disconnect the supply lines.
Open the fifth wheel coupling (see section 4.3).
Drive the tractor unit out from under the semi-trailer.
The fifth wheel coupling is automatically ready for engagement
again (see section 4.2).
4.6 Checking the locking mechanism
G50/23
1
The catch (1) must be down as
shown.
JSK40/15
!
ATTENTION!
The skid plate must rest
on the fifth wheel coupling
without a gap.
G50/31
ADVICE!
To prevent the fifth wheel
coupling being opened
without authorisation, a se-
curity device (for example
a padlock) can be inserted
into the hole of the catch
holder in the handle as
shown.
EN
JSK 36 & JSK 37 MUB 002 004 M01 (REV-C) 04-2019 11
JOST IND (REV-A) 06-2019
JSK 39
latch