Case 770 EX - Page 45

Engine-Engineandcrankcase
Connectingrods
Smallendborediameter
41.846–41.884mm(1.647–1.649in)
Smallendbushingouterdiameter41.979–42.017mm(1.647–1.649in)
Bushinginterferencetinsmallend0.095–0.171mm(0.0037–0.0067in)
SmallendbushingttedID38.004–38.014mm(1.496–1.497in)
Bigendborediameter
67.407–67.422mm(2.654–2.654in)
Maximumconnectingrodaxismisalignmentat
125.000mm(4.921in)
±0.07mm(0.0028in)
Maximumconnectingrodweightdifferenceovera
completesetfromthesameengine
25.00g(0.88oz)
Pistons
Pistondiameter:Measuredat12.000mm(0.472in)
frombaseofskirtandrightanglestopin
103.852–103.870mm(4.089–4.089in)
Pistonclearanceinliner
0.130–0.172mm(0.005–0.007in)
•
Maximumwearclearance
0.300mm(0.012in)
Pistonoversizerange
0.600mm(0.024in)
Pistonstand-outwithrespecttoheadatTDC
0.430–0.840mm(0.017–0.033in)
Pistonpindiameter37.983–37.990mm(1.495–1.496in)
Pistonpinseatboreinpiston38.000–38.006mm(1.496–1.496in)
Pistonpinclearanceinpiston0.0100–0.0230mm(0.0004–0.0009in)
Pistonpinclearanceinsmallendbushing
0.0140–0.0310mm(0.0006–0.0012in)
•
Maximumwearclearance
0.060mm(0.002in)
Maximumweightdifferencebetweenpistonsonsame
engine
20.00g(0.71oz)
Pistonringclearanceingroove:
•
Top
0.0900–0.1220mm(0.0035–0.0048in)
•
2
nd
0.0600–0.0850mm(0.0024–0.0033in)
•
3
rd
0.0400–0.0750mm(0.0016–0.0030in)
Maximumwearclearance:
•
Top
0.50mm(0.02in)
•
2
nd
and3
rd
0.20mm(0.01in)
Pistonringgap:
•
Top
0.25–0.40mm(0.01–0.02in)
•
2
nd
0.60–0.85mm(0.02–0.03in)
•
3
rd
0.30–0.55mm(0.01–0.02in)
Maximumweargap
1.20mm(0.05in)
4819054426/09/2017
10.1[10.001]/13