436-1079 Caterpillar idler sleeve for engine spare part

436-1079 Caterpillar idler sleeve for engine spare part Featured Image
  • 436-1079 Caterpillar idler sleeve for engine spare part
  • 436-1079 Caterpillar idler sleeve for engine spare part
  • 436-1079 Caterpillar idler sleeve for engine spare part

Short Description:

436-1079 Caterpillar idler sleeve, wear-resistant locating bushing for timing idler, fitted between idler gear and support shaft for friction reduction and positioning, for engine timing drive overhaul replacement.


Product Detail

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description

This idler sleeve is a wear liner for timing idler. It is made of high-strength alloy steel with precision ground inner and outer diameters to maintain OEM clearance. It separates the idler gear from support shaft, bears alternating loads and reduces friction for smooth rotation, preventing binding and timing jump. It is widely used for timing system overhaul of excavators, generator sets and loaders. Replace it when bore scoring or excessive clearance occurs to protect the shaft and idler gear without changing the whole idler group.

Part Number: 436-1079
Type: Idler Gear Sleeve (Idler Gear Bushing)
Material: Carbon Steel
Manufacturing Process: Precision turning, internal and external cylindrical grinding, surface hardening
Associated Components: Idler shaft, idler gear, seals, retaining rings
Function: Friction reduction, radial support, positioning and limiting

Product Advantages

• Supports alignment between meshing timing gears.
• Maintains spacing between adjacent rotating components.
• Interfaces with the shaft surface for positioning control.

1. OEM dimensional tolerance for press fit and correct idler clearance.
2. Hardened surface resists wear and seizure under continuous pulsating timing load.
3. Tight roundness and cylindricity control for smooth idler rotation and low noise.
4. Sold as separate bushing for economical repair, cheaper than replacing full idler assembly.
5. Matches original idler design with no modification to shaft or gear.

FAQ 

Q: What faults will be caused by worn 436-1079?
A: Excessive idler play, timing noise, and timing jump which may bend valves.

Q: Can I grind the idler shaft to reuse the old sleeve?
A: Not recommended. It breaks the clearance and leads to seizure quickly.

Q: Does this sleeve fit all Cat timing idlers?
A: No. Match engine serial number and idler group part number before installation.

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