Guangzhou Meishun Automatic Transmission Co., Ltd.
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Typical Faults:
Rotor/Gear Wear
Symptom: Low line pressure (P0841/P0868 codes, delayed shifts)
Cause: Contaminated ATF or metal debris scoring surfaces
Seal Failure
Symptom: Pressure loss at idle (pump whine)
Trigger: Hardened/rolled seals from heat/age
Cavitation Damage
Symptom: Foamy ATF, erratic shifts
Root Cause: Clogged filter or aerated fluid
Critical Checks:
Clearance: Rotor-to-housing >0.15mm = replace
Prime Test: Should generate 20+ psi instantly at crank
Debris Inspection: Metal flakes indicate imminent failure
Pro Tip: Always replace pump and torque converter simultaneously – 70% of pump failures originate from TC debris.
