These are mating plates, part number 4871966, designed for use in the transmission or drivetrain systems of various Volvo wheel loaders and articulated haulers. They are essential for engaging and disengaging power, facilitating smooth gear changes and torque transfer. Worn or damaged plates can result in slipping, delayed engagement, or a loss of power transmission. Operators may experience difficulty shifting gears, a grinding noise during operation, or a noticeable reduction in acceleration.
Always verify with serial number before ordering.
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Cross-reference part number with serial number before ordering to confirm fitment. Keep original parts until new ones are confirmed correct. Record part numbers replaced for future reference.
Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.
Initial signs of worn mating plates may include a delay in gear engagement or a slight shudder when shifting. If ignored, the transmission may start to slip under load, leading to a noticeable loss of power and increased operating temperatures. Continued use with severely worn plates can result in complete loss of drive and potential damage to other transmission components.
Ensure all friction and steel plates are soaked in the correct transmission fluid for at least 30 minutes before assembly to prevent initial dry engagement. Stagger the installation of new plates correctly according to the service manual to ensure even wear.
When replacing mating plates, always inspect the transmission pump, torque converter, and clutch pack seals for wear or leaks.