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SPECIFICATIONS
Valve Seat Counterbore Depth (Exhaust) 9.9 ±0.13 mm 0.3898 ±0.005 in.
INJECTORS
Injector Tip Protrusion 2.9 ±0.1 mm 0.114 ±0.004 in.
Preload (for New Injectors or New Copper Sleeves) 0.85 mm 0.035 in.
PISTON
Top Extension Above Cylinder Block Deck at TDC 0.15–0.65 mm 0.0059–0.0256 in.
Wrist Pin Diameter 54 mm 2.126 in.
Wrist Pin OD 54 mm 2.125 in.
PISTON RINGS
Compression Ring End Gap — Upper 0.35–0.55 mm 0.0138–0.0217 in.
Compression Ring End Gap — Upper: Wear Tolerance 0.9 mm max. 0.0354 in. max.
Compression Ring End Gap — Lower 0.8–1.0 mm 0.0315–0.0394 in.
Compression Ring End Gap — Lower: Wear Tolerance 1.3 mm max. 0.0512 in. max.
Oil Control Ring End Gap 0.35–0.75 mm 0.0138–0.0295 in.
Oil Control Ring End Gap — Wear Tolerance 1.0 mm max. 0.0394 in.
Compression Ring Clearance — Lower Groove 0.09–0.13 mm 0.0035–0.0051 in.
Oil Ring Clearance — Oil Ring Groove 0.05–0.10 mm 0.002–0.0039 in.
OIL PUMP
Crankshaft Gear to Oil Pump Gear Backlash 0.1–0.4 mm 0.004–0.016 in.
TIMING GEARS
Adjustable Idler Gear to Camshaft Gear Backlash 0.05–0.17 mm 0.0020–0.0067 in.
Adjustable Idler Gear to Intermediate Idler Gear Backlash
Intermediate Idler Gear to PTO Gear Backlash
Intermediate Idler Gear to Crankshaft Gear Backlash
Lower Idler Gear to Crankshaft Gear Backlash
Lower Idler Gear to Tandem Pump Gear Backlash
Intermediate Idler Gear to Air Compressor Gear Backlash
TURBOCHARGER
Shaft End Play 0.15 mm 0.0059 in.
VALVES
Inlet (cold engine) Lash (Clearance) 0.2 ±0.05 mm 0.008 ±0.002 in.
Exhaust (cold engine) Lash (Clearance) — without
PowerLeash™
0.80 ±0.05 mm 0.031 ±0.002 in.
Exhaust (cold engine) Lash (Clearance) — with
PowerLeash™
2.0 ±0.05 mm 0.079 ±0.002 in.
Valve Face to Deck (Inlet) 1.10 mm min./1.95 mm max. 0.043 in. min./ 0.077 in. max.
Valve Face to Deck (Exhaust) 0.40 mm min./1.25 mm max. 0.016 in. min./0.0492 in.
max.
Valve Stem OD (Inlet) 7.961–7.975 mm 0.3134–0.3139 in.
Valve Stem OD (Exhaust) 7.948–7.962 mm 0.3129–0.3135 in.
Note: Replacing valve seats requires replacing valves.
Tolerances Are Shown Low to High Standard Size or Fit
Component Metric English
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