MTU — Adjusting valve clearance with two crankshaft positions
Adjustments · Valve drive / rocker arm adjusting screw
From a MTU service manual covering: 12V2000, 12V2000M60, 12V2000M70, 12V2000M80, 12V2000M90, 12V2000M91, 16V2000, 16V2000M60, 16V2000M70, 16V2000M80, 16V2000M90, 16V2000M91. Check it applies to your exact model before use.
Applies to: MTU 16V2000
Procedure
- Rotate engine with barring tool until markings are aligned.
- Rocker arms on cylinder A1 unloaded = firing TDC; loaded = overlap TDC.
- Set valve clearances at initial TDC position per valve clearance setting diagram.
- Rotate crankshaft a further 360° to second TDC position.
- Set remaining valve clearances per valve clearance setting diagram.
- Release locknut, unscrew adjusting screw, insert feeler gauge between valve bridge and rocker arm.
- Set adjusting screw so feeler gauge can just be pulled through.
- Tighten locknut to 50 Nm holding adjusting screw; recheck valve clearance.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Inlet 0.40 mm, Outlet 0.60 mm (engine cold, 20 °C)
- Locknut 50 Nm
Full service-parts list: MTU 16V2000 →
Source: MTU service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.