Crankshaft Regrinding Data - Perkins 4.108 Workshop Manual

CRANKSHAFT AND MAIN BEARINGS-H.5
Crankshaft Regrinding Data
0.010 in (0,25 mm)
Undersize
Ai
2.238/2.2385 in
(56,85/56,86 mm)
A2 2.2375/2.238 in
(56,83/56,85 mm)
B 1.9893/1.9901 in
(50,53/50,55 mm)
C 1.509 in (38,33 mm) maximum
D 1.1945 in (30,34 mm) maximum
E
1.516 in (38,51 mm) maximum
R1 0.12510.141 in (3,1713,58 mm) all journals
R2 0.156/0.172 in (3,96/4,37 mm) all crankpins
c
0.20 in (0,51 mm)
Undersize
2.228/2.2285 in
(56.59/56,60 mm)
2.2275/2.228 in
(56,58/56,59 mm)
1.9793/1.9801 in
(50,27/50,29 mm)
0.030 in (0,76 mm)
Undersize
2.21812.2185 in
(56,34/56,35 mm)
2.2175/2.218 in
(56,32/56,34 mm)
1.9693/1.9701 in
(50,02/50,04 mm)
Surface finish of crankpins and journals 16 micro inches (0,4 microns) C.L.A. Maximum.
Surface finish of fillet radii 50 micro inches (1 ,3 microns)
Magnetic crack detection D.C. Flow 2 amps
Limits of taper and out of round for pins and journals:
Taper 0.00035 in
(0,009 mm)
A.C. Current - 1000 amps
Out of Round 0.0004 in
(0,010 mm)
Maximum Run-out with crankshaft mounted on the end main journals
Independent readings:
Crankshaft Pulley
Diameter T.I.R.
0.002 in (0,05 mm)
Journals T.I.R.
Number 1.
Mounting
4.108 Series Workshop Manual, June 1986
Rear Oil Seal
Diameter T.I.R.
0.002 in (0,05 mm)
Number 2.
0.003 in (0,08 mm)
Flywheel Flange
Diameter T.I.R.
0.002 in (0,05 mm)
Number 3.
Mounting
E