Description

Overview

Jost turntable jaw spring restores spring tension in the fifth wheel locking mechanism so the lock jaw can operate correctly during coupling service. This small locking component suits selected JOST JSK fifth wheel and turntable assemblies, including JSK 36CV, JSK 37 C-Z, JSK 37 E/EW and JSK 42 applications.

Features

• Lock jaw spring for selected JOST JSK turntable and fifth wheel couplings.
• Suits JSK 36CV, JSK 37 C-Z, JSK 37 E/EW and JSK 42 assemblies.
• Fits within the lock jaw mechanism as a tension spring component.
• Small replacement spring for turntable locking system service work.

Specifications and Materials

The Jost turntable jaw spring sits in the lock jaw group on compatible JSK fifth wheel couplings. On JSK 42 assemblies, it matches item 04 as the tension spring, while JSK 37 service diagrams list the same component as the lock jaw spring.

Part number: SK847.

Use the manufacturer JSK 42 spare parts catalogue when checking the spring position and matching lock components

Compatibility and Fitment

Check the fifth wheel model before ordering, because this spring must match the correct JSK locking mechanism. Also inspect the lock jaw, lubrication tube, pivot and double tension spring while the locking group is apart, because worn companion parts can affect coupling operation.

Related Parts

Check the related service parts below against the turntable setup before ordering.

Compliance and Safety

Replace damaged or weakened locking springs before the coupling returns to service. After fitting, confirm the lock jaw moves freely, then check the fifth wheel locks and releases correctly before reconnecting a trailer.

Trailer Applications

Fleets use this Jost turntable jaw spring when servicing fifth wheel locking mechanisms on prime movers running compatible JSK turntables. It suits trailer workshops replacing worn lock components during jaw service, coupling inspection or lock repair work.

Why Choose ICS Trailers

ICS Trailers supplies fifth wheel and turntable service parts for heavy trailer workshops, fleet maintenance teams and repair benches. Browse more fifth wheel components in our Turntable range