Idle Gear 13525-17010 1352517010 for Toyota Land Cruiser Coaster 1HZ 1HDT — Genuine OEM Timing Gear

The Idle Gear (GEAR, IDLE, NO.1) with Genuine Toyota OEM number 13525-17010 (also listed as 1352517010) is a verified direct-fit replacement for a wide range of Toyota off-road and commercial vehicles, including the iconic Land Cruiser (70, 80, 100 Series) and Coaster buses. Also known as a Timing gear, this idler gear is a critical component of the engine's timing gear train. It serves as an intermediary between the crankshaft gear and the camshaft gear, ensuring precise synchronization of the engine's valve timing for optimal combustion, power delivery, and durability, especially in demanding off-road and commercial applications.

If your timing idle gear is failing, you may experience one or more of the following symptoms:

1. Engine Timing Noise: Unusual whining, rattling, or clattering noises from the front of the engine — indicates worn gear teeth or bearings
2. Engine Misfire or Rough Running: The engine runs unevenly, misfires, or lacks power — indicates the timing between the crankshaft and camshaft is no longer precise
3. Difficulty Starting: Extended cranking or no-start conditions — timing synchronization is compromised
4. Metal Shavings in Oil: Visible metallic particles in the engine oil — indicates severe wear on the gear or related components
5. Catastrophic Engine Failure: In extreme cases, a failed gear can lead to a timing jump and severe internal engine damage

Primary Applications — Toyota Land Cruiser:

Engine Details:

As a Genuine Toyota OEM part, each idle gear meets Toyota's stringent quality standards.

Pre-Installation Checklist:

• This gear is typically replaced during timing gear service or engine rebuilds
• Inspect the crankshaft gear, camshaft gear, and related timing components for wear — replace as necessary
• Ensure the engine is properly timed after installation
• Use new seals and gaskets during reassembly

Installation Guidelines (Reference Toyota workshop manual):

1. Ensure the engine is properly supported and the timing cover is removed
2. Remove the old idle gear and inspect the mounting shaft/bearing for wear or damage
3. Clean the mounting surface and shaft thoroughly
4. CRITICAL: Install the new gear with correct orientation as specified in the Toyota workshop manual
5. Torque the retaining bolt to manufacturer's specified torque settings (refer to Toyota workshop manual)
6. CRITICAL: Set the engine timing correctly before reassembly
7. Reassemble the timing cover and remaining components
8. Start the engine and check for unusual noises

Maintenance Schedule:

• Inspection: During timing belt/chain service or if unusual engine noises are detected
• Replacement: Immediately if failure symptoms appear. Also recommended during major engine overhauls
• Note: Early signs of wear include noisy engine operation and timing issues

• Packaging: Each idle gear is securely packed in Genuine Toyota OEM packaging
• Suitable for: Wholesale distributors, auto parts retailers, 4×4 specialty shops, commercial vehicle repair shops, and fleet owners