Case 770 EX - Page 47

Engine-Engineandcrankcase
Rockers
RockerbushingOD21.006–21.031mm(0.827–0.828in)
Rockerborediameter
20.939–20.972mm(0.824–0.826in)
Bushinginterferencetinrocker0.034–0.092mm(0.001–0.004in)
Rockerbracketborediameter
18.016–18.034mm(0.709–0.710in)
Rockershaftdiameter
17.982–18.000mm(0.708–0.709in)
Rockershaftclearanceinbracket
0.016–0.052mm(0.001–0.002in)
Maximumwearclearance
0.150mm(0.006in)
Rockerspacerspringlength
•
Free
59.500mm(2.343in)
•
Underload(4.7–5.3kg(10.4–11.7lb))44.00mm(1.732in)
Valves,guidesandsprings
•
Valveheaddiameterinlet
45.300–45.500mm(1.783–1.791in)
•
Exhaust
41.000–41.250mm(1.614–1.624in)
•
Valvestemdiameter
7.985–8.000mm(0.314–0.315in)
Valvefaceangle
•
Inlet
60°30’±7’
•
Exhaust
45°30’±7’
Timingcheck
0.450mm(0.018in)
Valveclearance:
•
ValveclearanceInlet(warmorcold)0.300mm(0.012in)
•
ValveclearanceExhaust(warmorcold)0.300mm(0.012in)
CamliftInlet
5.8885mm(0.2318in)
CamliftExhaust
6.1277mm(0.2412in)
ValveliftInlet
10.4437mm(0.4112in)
ValveliftExhaust
10.8679mm(0.4279in)
ValveguideOD13.933–14.016mm(0.549–0.552in)
Valveguideoversize
0.200mm(0.008in)
Valveguideinterferencetinhousingoncylinderhead0.0050–0.0500mm(0.0002–0.0020in)
ValveguidettedIDafterreaming8.023–8.043mm(0.316–0.317in)
Valvestemclearanceinguide
0.023–0.058mm(0.001–0.002in)
•
Maximumwearclearance
0.130mm(0.005in)
Maximumvalvestemeccentricityoveronerevolution
withstylusonsealingface
0.0300mm(0.0012in)
Inletandexhaustvalvespringlength
•
Free
44.600mm(1.756in)
•
Withloadof26.1–28.9kg(57.5–63.7lb)34.000mm(1.339in)
•
Withloadof51.2–56.5kg(112.9–124.6lb)23.800mm(0.937in)
4819054426/09/2017
10.1[10.001]/15