jost JSK 39, Installation And Operating Instrucitons

Table of contents

1 Explanation of symbols......................................... 3

2 Safety information.................................................. 4

2.1 Safety information for operation................................ 4

2.2 Safety information for servicing................................. 4

2.3 Safety information for installation.............................. 5

3 Proper usage........................................................... 6

3.1 Application................................................................. 6

3.2 Unintended use......................................................... 6

3.3 Design........................................................................ 7

4 Operation................................................................. 9

4.1 Fifth wheel coupling closed and locked..................... 9

4.2 Fifth wheel coupling ready for engagement............... 9

4.3 Opening the fifth wheel coupling............................... 10

4.4 Coupling up a semi-trailer......................................... 10

4.5 Uncoupling a semi-trailer........................................... 11

4.6 Checking the locking mechanism.............................. 11

5 Installation............................................................... 12

5.1 General installation instructions................................. 12

5.2 Assembling the fifth wheel coupling on the mounting

plate........................................................................... 13

5.3 Fastening material and tightening torques................ 14

6 Servicing and testing............................................. 15

6.1 Servicing instructions................................................. 15

6.1.1 Fifth wheel coupling with manual lubrication.. 15

6.1.2 Fifth wheel coupling with central lubrication

connection (version Z).................................... 16

6.1.3 Low-maintenance fifth wheel coupling with

top plate liners (version W)............................ 16

6.1.4 Grease specification....................................... 17

6.2 Lubrication instructions.............................................. 18

6.3 Test instructions......................................................... 20

6.4 Wear test................................................................... 20

6.5 Adjusting the locking mechanism.............................. 21

6.6 Wear limit – top plate liners....................................... 22

EN

2

MUB 002 004 M01

 (REV-C)  

04-2019

JSK 36 & JSK 37

JOST IND (REV-A) 06-2019

JSK 39

..............................

6.4.1    Wearing ring, lock jaw ,rubber bush wear limit    21
6.4.2    To remove  and install locking mechanism          22
6.4.3     To remove and install pedestal, rubber bush 
              & swivel pin.......................................................23
6.4.4      Locking mechanism wear limit..........................24

 6.5     Adjusting the locking mechanism...................................25

Trailer rubbing plate guideline- JOST 
recommendation........