Smooth Idler Pulley Assembly Thermo King
Smooth Idler Pulley Assembly Thermo King
$15.00
Smooth idler pulley assembly for Thermo King SLX, SLXe and SLXi trailer units with spindle-mounted design for blower belt idler service, bearing replacement, and stable belt tracking when the pulley runs rough or noisy.
Part number TK-77-2900-AM.
Description
Overview
Smooth Idler Pulley Assembly Thermo King SLX SLXe SLXi is the spindle-mounted smooth idler assembly used on trailer refrigeration blower belt layouts in these unit families. When the pulley runs rough, noisy or loose, belt control suffers and the rest of the drive path takes more punishment, so replacing the complete assembly is often the cleaner repair.
Features
- Smooth idler pulley assembly with spindle for trailer applications.
- Used on Thermo King SLX, SLXe and SLXi unit families.
- Suited to blower belt idler service rather than the grooved pulley position.
- Commonly ordered when bearing wear or pulley noise shows up during inspection.
Specifications and Materials
Smooth Idler Pulley Assembly Thermo King SLX SLXe SLXi covers the smooth blower belt idler position and matches the spindle-style assembly shown for trailer units. It is the complete smooth pulley assembly rather than the bare smooth pulley without spindle, so buyers should match the mounting style before ordering. Part number: TK-77-2900-AM.
See the Thermo King technical manual
Compatibility and Fitment
Check the unit family and confirm you need the smooth pulley assembly with spindle before ordering, because the smooth pulley without spindle and the T-Series Spectrum version are listed separately. 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. 77-2900, 772900, 78-1621, 781621, 77-3061, 773061, 77-2778, 772778
Compliance and Safety
Shut the unit down before inspecting or replacing this part, because trailer refrigeration units can start automatically and the belt drive runs close to other moving components. Also keep hands and tools clear of the belt path until the system is isolated.
Trailer Applications
Smooth Idler Pulley Assembly Thermo King SLX SLXe SLXi suits front-mounted trailer refrigeration units in the SLX, SLXe and SLXi range where the blower belt uses a smooth idler position. It is the right style when you are replacing the spindle-mounted smooth side of the idler set and want the complete assembly instead of chasing the pulley pieces one by one.
Cross-reference and Suitability
This part cross-references to or suits the following equivalent part numbers and compatible alternatives:
| 77-2900 | 772900 | 78-1621 |
| 781621 | 77-3061 | 773061 |
| 77-2778 | 772778 |
Why Choose ICS Trailers
ICS Trailers carries Thermo King drive parts used around the same blower belt path, so you can order the smooth idler assembly with the matching belt and adjacent pulley items in one place.
Online prices apply to website orders only. In-store pricing may differ.







