Engine Mechanical:
Yes (Oil change, valve clearance, injection timing, fuel filter, air filter, V-belts, poly V-belt, manifolds, spark plugs, coolant, engine mounts)
Engine Electrical:
Partial (Spark plugs, warning lamps - full diagnostics likely requires additional electrical troubleshooting guides)
Fuel System:
Yes (Fuel filter, prefilter, fuel system condition check)
Cooling System:
Yes (Coolant level, antifreeze, cooling/heating system inspection, coolant replacement)
Exhaust System:
Yes (Oxygen sensor replacement, exhaust flange tightening, exhaust system connection tightening)
Transmission Manual:
Yes (Oil change, oil level checking/correction)
Transmission Automatic:
Yes (Fluid and filter change, fluid level checking/correction)
Drivetrain Transfer Case:
Yes (Fluid change, fluid level checking/correction)
Suspension And Steering:
Yes (Suspension/body structure inspection, ball joint inspection, front/rear axle oil, self-leveling suspension, ADS, ASD, 4MATIC fluid levels, steering play check, steering bolt tightening)
Brakes:
Yes (Brake fluid level, lines inspection, pads/disks thickness, disk cleaning, parking brake adjustment, fluid replacement, brake test)
Wheels And Tires:
Yes (Wheel inspection/rotation, tire inspection, tire pressure correction, wheel bolt tightening)
Body And Chassis:
Yes (Component inspection, lines/hoses inspection, water leakage/corrosion, body paint damage check, door hinge lubrication, hood lubrication, lower panel removal/installation, noise encapsulation panels)
Climate Control:
Yes (AC refrigerant charge, dust filter, active charcoal filter, recirculating air filter replacement)
Lighting:
Yes (Headlamp/exterior lamp inspection)
Wipers And Washers:
Yes (Windshield wiper/washer inspection, wiper blade replacement, windshield washer fluid level)
Electrical Accessories:
Partial (Hydraulic top fluid level, sunroof rails, cleaning cassette deck tone head, cleaning antenna mast, lubricating folding side mirror)
Safety Restraints:
Yes (Safety belt inspection, backrest lock operation check)
Routine Maintenance:
Yes (Oil and filter changes, fluid checks, belt checks, filter replacements, lubrication)
Component Adjustment:
Yes (Valve clearance, idle speed, injection timing, parking brake)
Component Replacement:
Yes (Filters, spark plugs, sensors, brake fluid, coolant, wiper blades)
Inspection And Diagnostics:
Yes (Comprehensive component, line, hose, suspension, body, and system inspections; includes checks for leaks and corrosion)
Troubleshooting:
Implied through detailed inspection and repair procedures, though explicit diagnostic trees are not listed.
Depth:
Comprehensive factory-level repair and maintenance, covering mechanical, drivetrain, chassis, and basic electrical systems.
Diagnostic Capabilities:
Focuses on visual inspections, fluid checks, and component adjustments/replacements. Advanced electronic diagnostics may not be covered in detail.
Engine Type:
Inline-5 Cylinder Diesel Turbocharged
Displacement:
2.5 Liters (2497 cc)
Bore X Stroke:
87.0 mm x 84.0 mm (approximate for OM602 family)
Compression Ratio:
22.0:1 (typical for OM602.912)
Horsepower:
126 hp @ 4000 rpm (approximate, varies slightly by market and specific tuning)
Torque:
170 lb-ft @ 2400 rpm (approximate, varies slightly by market and specific tuning)
Fuel Delivery:
Bosch Mechanical Injection Pump with Turbocharger (Pre-common rail)
Valve Adjustment Procedure:
Rocker arm adjustment via screws and locknuts on camshaft rockers. Requires checking clearance with feeler gauges when engine is at operating temperature and at specific cylinder positions (often TDC on compression stroke).
Injection Timing Check Adjust:
Typically adjusted by rotating the injection pump housing. Precise timing is critical and requires specialized tools or knowledge for accurate setting.
Oil Type Capacity:
Refer to manual for specific OEM recommendations. Typically SAE 15W-40 or 10W-40 diesel-specific oil. Capacity around 7-8 liters.
Oil Change Interval:
Typically 5,000 - 7,500 miles (8,000 - 12,000 km) or annually, whichever comes first, depending on driving conditions. Consult manual for exact recommendation.
Transmission Fluid Change Interval:
Automatic: 30,000 - 50,000 miles (48,000 - 80,000 km). Manual: 50,000 - 70,000 miles (80,000 - 112,000 km). Always verify with manual.
Fuel Filter Replacement:
Typically every 15,000 - 20,000 miles (24,000 - 32,000 km) or as indicated by performance issues.
Coolant:
Glysantin G48 or equivalent (Ethylene Glycol based, blue color), typically mixed 50/50 with distilled water for freeze protection and corrosion inhibition.
Common Problems:
Head gasket leaks (especially on earlier OM602 variants), injector seal leaks, vacuum line degradation, suspension component wear (e.g., ball joints, bushings), potential rust on body panels in certain climates, glow plug issues.
