Description

Overview

Thermo King Spectrum SL Fanshaft Belt fits the idler to fanshaft drive position on Spectrum SL trailer refrigeration units. It carries drive through the fan system, so the unit can maintain steady airflow and stable belt tracking during service. This replacement belt suits Spectrum SL applications where the existing belt shows slip, glazing, cracking or wear.

Features

• Fits the idler to fanshaft drive position on Spectrum SL units
• Built for fan drive service on Thermo King Spectrum SL equipment
• Helps maintain stable belt tracking through the fan drive layout
• Useful during routine belt replacement or fault repair work

Specifications and Materials

Thermo King Spectrum SL Fanshaft Belt covers the fan drive belt position used on Spectrum SL refrigeration units. This Optibelt version supplies the replacement belt for that position, and it matches the same part family carried under older Thermo King cross-reference numbers. Part number: TK-78-1988-OP.

For unit service literature, use the Thermo King manuals library

Compatibility and Fitment

Check that the unit is a Spectrum SL before ordering, then confirm you are replacing the idler to fanshaft belt because these systems also use separate belts in other drive positions. 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. 78-1988, 781988, CP10516, 78-1274, 781274, 78-1489, 781489, 78-1952, 781952, 2C39205H67, 1E11111H54

Compliance and Safety

Shut the unit down before fitting the belt, and keep clear of rotating pulleys and driven shafts during inspection. After installation, set belt tension correctly, confirm pulley alignment, and inspect belt tracking again after initial run time because poor alignment can shorten belt life.

Trailer Applications

Thermo King Spectrum SL Fanshaft Belt suits Spectrum SL transport refrigeration service work where the fan drive belt needs direct replacement. It also makes sense as a workshop spare when the unit needs planned belt service and the fan drive position shows visible wear.

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 supplies transport refrigeration parts for working fleets, so you can source this belt from a supplier that understands Thermo King trailer service requirements.

Browse Thermo King parts at ICS Trailers