Product Function：

The primary function of the 8P-8701 Thrust Washer is to control axial clearance and absorb end-play movement within the engine crankshaft assembly or power train gear clusters. Positioned between rotating components and stationary housings, this thrust washer limits lateral shifting caused by directional load changes during heavy equipment operation. By maintaining correct axial alignment, it ensures uniform gear mesh and prevents structural contact between machined faces. If the washer experiences excessive wear, it can lead to increased crankshaft end-play, misaligned timing gears, and uneven bearing load distribution.

Common Failure Symptoms：

• Increased engine crankshaft or gear train axial end-play beyond service manual limits.
• Abnormal metal particulate or copper-colored flakes detected during routine oil analysis.
• Localized knocking or deep thumping noises coming from the lower engine block during acceleration.
• Uneven wear on connecting rods or adjacent main bearings due to crankshaft shifting.

Installation Notes：

• Measure the crankshaft thrust journal width to verify that standard thickness washers are appropriate for the assembly.
• Clean the bearing saddle and oil delivery passages thoroughly to remove varnish and debris before seating the washer.
• Verify the orientation of the lubrication grooves, ensuring they face the rotating crankshaft counterweight or gear surface.
• Coat both sides of the thrust washer with clean assembly oil to provide initial lubrication during start-up.
• Check final axial end-play with a dial indicator after torquing main bearing caps to manufacturer specifications.

Maintenance Tips：

• Maintain strict oil sampling intervals to monitor for early indicators of bearing and thrust washer wear.
• Ensure the engine operating temperature remains stable, as overheating lowers oil film strength at thrust faces.
• Avoid prolonged engine idling at high angles, which can reduce consistent oil supply to rear thrust positions.

FAQ：

Q: Can this part replace OEM 8P-8701?

A: Yes, this part is a direct replacement for OEM part number 8P-8701 (8P8701), manufactured to match original specifications and material composition for heavy-duty mechanical assemblies.

Q: Is this an OEM or aftermarket replacement?

A: This is a high-grade aftermarket replacement component built using wear-resistant alloys to meet the durability demands of industrial diesel engines and transmissions.

Q: Which machines are compatible?

A: This thrust washer fits various heavy machinery models including track-type tractors D6R, D7R, and D8R, wheel loaders 980G, and engines utilizing the 3406 or C15 platform. Please provide your engine serial number to confirm exact compatibility.

Q: How should I store this part before installation?

A: Keep the thrust washer in its anti-corrosion packaging and store it flat in a clean, dry indoor environment to prevent warping, oxidation, or surface contamination.

Q: Can I purchase in bulk?

A: Yes, we provide bulk supply solutions and wholesale pricing structures for equipment dealers, rebuild shops, and fleet maintenance departments. Contact our sales staff with your required quantities.

Why Sourcing From WinsParts?

WinsParts utilizes precise catalog cross-referencing to ensure our replacement parts align directly with factory engineering records. Our team conducts visual and dimensional quality audits on each component lot to secure reliable tolerances before delivery. By managing localized warehousing networks, we expedite order processing to support timely machine service and help global parts distributors maintain reliable inventory continuity.