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Summary of Contents for jost JSK 52DV
- Page 1 FIFTH WHEEL COUPLING JSK 52DV / JSK 54DV ○ Installation and operating instructions for FIFTH WHEEL COUPLING JSK 52DV/54DV...
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Page 3: Table Of Contents
Contents Safety information Safety information for operation Safety information for servicing Safety information for installation Proper usage Application Design Operation Fifth wheel coupling closed and locked Fifth wheel coupling ready for coupling To open the fifth wheel coupling To couple up a semi-trailer To check the locking mechanism To uncouple a semi-trailer Servicing and testing... -
Page 4: Safety Information
Safety information The safety information is compiled in one section. Where the user Safety information for installation of the fifth wheel coupling is in danger, the safety information is Do not change the installation area defined by the manufacturer of the tractor repeated in the various sections and marked with the danger unit. -
Page 5: Design
Proper usage Utilization The maximum load data for JOST fifth wheel couplings are set out on the type plate and the appropriate JOST catalogue sheets. If they are subject to dynamic Fifth wheel couplings provide the link between the tractor unit and the semi-trailer. -
Page 6: Operation
Operation Fifth wheel coupling closed and locked Fifth wheel coupling ready for coupling Handle Handle Locking bar Locking bar Lockjaw Lockjaw King pin King pin... -
Page 7: To Open The Fifth Wheel Coupling
Operation To open the fifth wheel coupling Try a test drive-off in a low gear. Check the locking mechanism (see section 3.5). Connect the supply lines. Lift the catch (1). Retract the landing gear as described in the operating manual. Release the parking brake and remove the chocks. -
Page 8: To Uncouple A Semi-Trailer
Clean the fifth wheel coupling and the skid plate. Grease the fifth wheel plate, lock parts and king pin. Grease specification: High-pressure grease (EP) e.g. Jost high-performance lubricant (Art. No. SKE 005 670000) Grease the pivot bearing and the upper surface of the fifth wheel coupling... -
Page 9: Testing Instructions
Excessive play causes shocks and may lead to instability on the road and damage to the fifth wheel coupling, mounting plate and vehicle chassis. JOST fifth wheel couplings have a manual infinite adjustment facility for the locking mechanism to extend their service lives. -
Page 10: To Adjust The Locking Mechanism
Servicing and testing Locking mechanism wear limit To adjust the locking mechanism Lock nut Locking bar Adjusting screw Handle The locking mechanism has reached its wear limit if the distance e between the Lockjaw Kingpin side of the outer bearing plate and the engagement mechanism (1) on the handle (2) is 45 mm. -
Page 11: To Maintain And Replace The Wearing Ring And Lockjaw
Servicing and testing To maintain and replace the wearing ring and lockjaw 80Nm Socket head cap screw Pull handle Wearing ring Lock jaw compl. (Tension spring) Pivot Lockjaw Unscrew the socket head cap screw (1) (Notice the torque value when tightening). -
Page 12: Installation And Welding
Please note: the rubber parts in the pedestals must be taken out before welding. welding. The details of welding method see the JOST standard JWN001. Note The fifth wheel coupling must be able to move freely and must not be in contact with either the mounting plate or parts of the chassis or flitch when the vehicle is Please note: The retaining sheets are turned side after mounting. -
Page 13: Spare Parts
Spare parts Spare parts list-JSK52 Exploded view: JSK52DV Piece Name Remark Order no. (Unit 3.5〞（90） Lock jaw compl. SK8301-005 Pivot SK8301-307 Lock bar SK8301-209 Double tension spring SK8301-210-01 Bar bolt compl. SK8301-006 fixing loop SK8101-206 Bolt compl. SK8301-007 Spring SK2405-009 Washer SK8101-305 Pull handle... - Page 14 Spare parts Exploded view: JSK54DV...
- Page 15 6.4 Spare parts list-JSK54 Name Remark Order no. Piece Name Remark Order no. Piece (Unit) (Unit) Lock jaw compl. 4”(100) SK8303-005 Bushing SK8301-204 Pivot SK8303-307 Pedestal (196mm) compl. SK8301-224 Lock bar SK8303-209 Wearing ring 4”(100) SK8303-223 Double tension SK8301-210-01 Socket head cap SK2421-008-02 spring screw...
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