Description

Overview

Engine to Jackshaft Belt Thermo King SL transfers drive from the diesel engine to the jackshaft on matched Thermo King SL applications. When this belt wears, hardens or starts to slip, the drive system loses stability, so early replacement helps protect belt tracking and keeps the accessory drive layout working as intended. This belt suits Tier 2 engine units without an electric motor, and it fits service work where the engine-to-jackshaft belt position needs direct replacement.

Features

• Fits the engine-to-jackshaft belt position on matched Thermo King SL units
• Covers Tier 2 engine applications without electric motor drive
• Optibelt version under the ICS sellable SKU
• Helps workshops match older belt references still found in service records and kit notes

Specifications and Materials

This Optibelt version supplies a single engine-to-jackshaft belt for matched Thermo King SL applications. Part number: TK-78-1950-OP.

See the Thermo King manuals library

Compatibility and Fitment

Check the installed belt position before ordering, because the same unit family also uses separate fan and water pump belts nearby. Engine to Jackshaft Belt Thermo King SL fits SL-100e, SL-200e and SL-400e family applications where the engine-to-jackshaft layout matches the fitted belt, including Tier 2 engine units without electric motor drive and Spectrum SL references that use the same belt path. This cross-reference listing means this part is a suitable replacement for the part numbers and applications shown. Some changes in installation may be required. 78-1950, 781950, 78-1987, 781987, 78-1968, 781968, 77-2937, 772937, 78-1904, 781904, 78-1271, 781271, 78-1487, 781487, 2C39205H64, 1E11111H52

Compliance and Safety

Inspect pulley condition, alignment and belt path cleanliness before fitting the new belt, then recheck tracking after the first run-up. If the old belt shows edge wear, glazing or uneven rib damage, inspect the tensioner and pulley surfaces as well so the new belt does not run against worn components.

Trailer Applications

Engine to Jackshaft Belt Thermo King SL suits transport refrigeration service work on SL-100e, SL-200e and SL-400e platforms that run a Tier 2 diesel engine without electric motor support. It also suits Spectrum SL applications that share the same drive arrangement. Because fleets often carry mixed service history, this belt helps when older workshop notes still use earlier Thermo King belt references for the same engine-to-jackshaft position.

Cross-reference and Suitability

This part cross-references to or suits the following equivalent part numbers and compatible alternatives:

Why Choose ICS Trailers

ICS Trailers lists Thermo King service parts against real unit applications and older reference trails, which helps workshop buyers sort belt position issues faster during repairs. Browse more Thermo King parts at ICS Trailers