Description

Overview

Thermo King Belt Idler to Fanshaft fits the jackshaft to fanshaft drive position on supported SLe and SMX trailer refrigeration units. It carries drive through the fan system, so the unit can hold steady airflow and stable belt tracking during service. This belt also suits later Tier 2 SL family applications that use the same jackshaft to fanshaft layout.

Features

• Fits the idler or jackshaft to fanshaft belt position
• Suits supported SLe, SMX and Tier 2 SL family applications
• Used on later SL-100e, SL-200e and SL-400e unit configurations
• Helps address slip, glazing, cracking and noisy belt drive operation

Specifications and Materials

Thermo King Belt Idler to Fanshaft covers the upper fan drive role on compatible transport refrigeration units. This Optibelt version supplies the replacement belt for that position, and it matches the same application family used across supported SLe, SMX and SL Tier 2 units.

Part number: TK-78-1987-OP.

Use the Thermo King manuals library for unit service literature

Compatibility and Fitment

Check the exact unit family and belt position before ordering, because these systems also use separate engine to jackshaft, compressor and water pump belts. 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. 78-1987, 781987, 78-1951, 781951, 78-1488, 781488, 1E11111H53, 78-1272, 781272, 2C39205H65

Compliance and Safety

Shut the unit down before fitting the belt, then 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 Belt Idler to Fanshaft suits SLe and SMX transport refrigeration service work, and it also suits SL-100e, SL-200e, SL-400e, SL-400e SR2 and Spectrum SL Tier 2 applications that use the same jackshaft to fanshaft arrangement. It makes sense as a direct service replacement when the fan drive belt has worn out but the rest of the drive layout remains serviceable.

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