Description

Overview

Smooth Idler Pulley Thermo King SL sits in the engine-to-jackshaft belt drive on SL trailer refrigeration units, so it helps guide belt travel and keep that drive path running true. When the pulley surface wears or the bearing starts to roughen up, belt tracking and noise usually get worse, so replacing the pulley early is the cleaner fix.

Features

• Smooth steel pulley for the idler position in Thermo King SL belt drive service.
• 82mm outside diameter, 33mm wheel thickness, 50mm overall thickness, and 10mm bolt size.
• Separate pulley format suits buyers replacing the wheel rather than a complete spindle assembly.
• Built for the smooth side of the drive layout, not the grooved pulley position.

Specifications and Materials

Smooth Idler Pulley Thermo King SL is the plain pulley used in the SL belt drive layout. Match the outside diameter, wheel thickness, overall thickness, and bolt size against the old pulley before ordering, especially if the unit has had earlier drive parts changed over time. Part number: TK-77-2937-AM.

See the Thermo King manuals library for broader unit service guidance.

Compatibility and Fitment

Check that you need the smooth idler pulley for the engine-to-jackshaft belt path, then match the 82mm outside diameter, 33mm wheel thickness, 50mm overall thickness, and 10mm bolt size before ordering. 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. 77-2937, 772937, 78-1547, 781547, 78-1284, 781284

Compliance and Safety

Shut the unit down fully before working around belts and pulleys, because Thermo King trailer units can start automatically. Keep hands, tools, and loose clothing clear of rotating components during inspection and reassembly.

Trailer Applications

Smooth Idler Pulley Thermo King SL suits the engine-to-jackshaft belt idler position used across SL trailer refrigeration applications. It is the right style when the smooth pulley face is worn, the bearing has gone noisy, or you are rebuilding the idler position as part of belt-drive service.

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 carries Thermo King drive parts used in the same belt path, so you can order this pulley alongside the matching belt and related idler service items without bouncing between categories.

Browse Thermo King parts at ICS Trailers