Perkins 103-06 - Crankshaft, Connecting Rod, and Valve Standards

Inspection items
Standard Standard To Be Allowable
Dimension Value Repaired Limit Remarks
PISTON RING 103-09 (Continued)
Piston ring groove-to-ring clearance
No. 1 ring 0.06-0.1 0.25
(.002-.003") (.009")
No. 2 ring 0.05-0.09
(.002-.0035")
Oil ring 0.02-0.06 0.15
(.0007-.002") (.006)
Ring width
No. 1 ring 2 1.97-1.99
(.079") (.077-.078")
No. 2 ring 1.5 1.47-1.49 Oversize (0.5, 1.0)
(.059") (.058-.059") (.020/.040")
Oil ring 4 3.97-3.99
(.157") (.156-.157")
PISTON RING 103-10
Piston ring gap:
No. 1 ring 0.2-0.35
(.007-.013")
1.0
No. 2 ring 0.15-0.30
(.0059-.012") (.039")
Oil ring 0.15-0.35
(.0059-.014")
Piston ring groove-to-ring clearance
No. 1 ring 0.06-0.1 0.25
(.002-.003") (.009")
No. 2 ring 0.05-0.09
(.002-.0035")
Oil ring 0.02-0.06 0.15
(.0007-.002") (.006")
Ring width
No. 1 ring 2 1.97-1.99
(.079") (.078-.078")
No. 2 ring 1.5 1.47-1.49 Oversize (0.5, 1.0)
(.060") (.058-.059") (.020/.040")
Oil ring 4 3.97-3.99
(.157") (.156-.157")
CONNECTING ROD
Twist between small and large end
holes (per 100mm)
less than 0.08
(.003")
0.2
(.0007")
Straightness at 100mm between small
and large end hole
less than 0.05
(.002")
0.15
(.006")
Front-to-rear clearance between
connecting rod and crank pin
0.1-0.3
(.004-.011")
0.7
(.0027")
Connecting rod bearing-to-crank pin
clearance
0.035-0.083
(.001-.003")
0.2
(.0007")
Oil clearance
Crush height of large end bearing 0.006-0.046
(.0002-.0018")
Crush height
Connecting rod bearing
(inner diameter x width)
39 x 17.5
(1.535")
Connecting rod bolt torque kg-m 3.0-3.5
(22-251b/ft)
Weight difference with piston gram less than 10
Crush height of small end bush 0.034-0.095
(.001-.0037")
CRANKSHAFT
Diameter of journal 46 45.964-45.975 45.9 Undersize
(1.81")
1.8096-1.810") (1.807"
.
0.25,0.0)
(010-.020")
Diameter of pin 39 38.964-38.975 38.9 Same to above
(1.54") (1.534-1.535") (1.532")