722.6 1998-1999 Mercedes-Benz ML320 3.2L AWD/4WD – Remanufactured 5-Speed Automatic Trans

Description

Locking internal clutch friction plates under 260 PSI pump force while managing 232 lb-ft torque, this Mercedes-Benz ML320 Remanufactured Transmission restores smooth forward power for 1998 to 1999 Mercedes-Benz ML320 3.2L all-wheel-drive platforms. Fleet operators prevent driveline shudder during demanding regional utility transit runs without vehicle downtime.

Die-cast aluminum alloy housing walls eliminate casing twist under sudden acceleration demands. Precision CNC-machined valve bodies receive hard-anodized sleeves to halt fluid pressure drops within the primary clutch circuits. High-carbon friction plates feature curved oil channels to shed thermal buildup into 8.5 quarts of MB 236.14 automatic transmission fluid. Dry weight checks in at 185 lbs with threaded cooler fittings for fast cooling connection.

Key Features of Mercedes-Benz 722.6

Harsh second-to-third gear shift shock during utility fleet runs leads fleet directors to buy Mercedes-Benz remanufactured transmission modules. Recalibrated electronic pressure control solenoids and fresh conductor plates deliver factory shift timing across high-mileage commercial service.

• A 3.93:1 first gear ratio multiplication delivers refined vehicle departure acceleration from stationary stops
• Hard-anodized valve bore sleeves eliminate internal cross-leaks to stabilize second-to-third gear transitions
• Radial fluid grooves cut into carbon friction plates accelerate heat dissipation under heavy stop-and-go runs
• Stress-relieved planetary gear carriers prevent pinion shaft looseness under high engine horsepower
• The Mercedes-Benz 722.6 system regulates pump line pressure between 180 and 260 PSI without hesitation
• Computer-balanced internal torque converters eliminate vibration through cabin footwells during highway travel
• Automated dyno hydro-pulse testing verifies solenoid response times within 12 milliseconds across all ranges

Hydraulic Line Pressure Calibrations

Starting with a 3.93:1 low gear, this gear train steps through five mechanical ratios toward a 0.83:1 overdrive that keeps engine cruising speeds low. Operating clutch fluid circuits maintain 180 to 260 PSI pump force to clamp clutch packs without slip. Transmission fluid sump temperatures remain within an optimal 160°F to 190°F range on summer highways. Internal fluid pathways evacuate 820 BTU per minute of heat energy straight to the radiator cooler. Continuous input torque ratings sustain 232 lb-ft at 4,500 RPM without fatigue.

Transfer Case Spline Interface

Interfacing with the transfer case input collar, the precision output spline resists driveline lash under rapid power transfers. Ductile iron case extensions withstand torque deflection during abrupt front-to-rear traction shifts. The internal mechanical parking pawl resists 1,500 lb-ft of static holding torque on steep commercial grades. Output shaft axial runout checks confirm alignment under 0.0025 inches total indicator reading.

Control Module Adaptation Guidelines

Reset internal shift adapts via scan tool before operating the vehicle in regular passenger service. This transmission is not engineered for track drag racing, extreme rock crawling, or gross combined vehicle weights exceeding factory chassis tow limits.

• Each shift scan electronic transmission parameters using professional equipment to confirm correct solenoid duty cycles
• Every 30 days check fluid level on level ground at 175°F using a calibrated workshop dipstick
• Every 30,000 miles drain contaminated MB 236.14 fluid and replace pan filter elements to protect internal components

Commercial Fleet Crate Package

Fleet investments stay protected by an inclusive 3-Year / 100,000-Mile commercial fleet warranty covering parts plus labor nationwide. Each crated package ships with one remanufactured transmission, a dynamic-balanced torque converter, cooler port seal rings, setup instructions, plus dyno performance graphs.