Perkins 103-06 Workshop Manual page 26

Bearing Holder
- Disassembly and Inspection A.
Centre bearing
a. Remove the bearing holder, and check it for
peeling, melting, stepped wear and other
damage. If
replace.
b. Using the plastigauge, measure the oil clear-
ance between the crankshaft centre journal
and the bearing.
If the oil clearance is more than the allowable
limit, replace the bearing. Or, grind the
crankshaft centre journal, and use under-
sized bearing (Refer to "Crankshaft").
103-09/10/Perama M25/M30
Standard oil clearance
0.039-0.092mm
(.0015-.0036")
Bearing Bearing
size Number
Standard 198517101'
198517110
0.25mm 198517105*
U.S. 198517114
(.0098")
0.50mm 198517108*
U.S. 198517117
(.0196")
Upper bearing
103-06 Holder
Bearing
Journal Standard oil
No. clearance
No. 1, 2 0.035-0.088
(.0014-.0035")
No.3 0.039-0.092
(.0015-.0036")
it is excessively damaged,
Allowable limit
0 2mm (
0 0 7 8 )
Crankshaft
centrejournal
diameter (mm)
45.964-45.975mm
(1,8096-1.8100")
45.714-45.725mm
(1.7997-1.8001")
45.464-45.475mm
(1.7899-1.7903")
Allowable limit
0.2
(.008")
0.2
(.008")
Bearing Journal Part No.
size No.
No.1 198517330*
S.TD. No.2 198517340
No. 3 198517101
198517110
No. 1 198517334'
U.S0.25 No.2 198517344
(.010") No.3 198517105*
198517114
No. 1 198517337*
U.S 0.50 No.2 198517347
(.020") No.3 198517108*
198517117
Upper bearing
No. 2 N o . 1
No 3
B. Thrust clearance 103-06
Check the thrust clearance for wear, poor contact,
burning or other defects.
N.B. No thrust washers are fitted.
Standard clearance
0.1 to 0.3mm
(.004-012")
Thrust washers. 103-09/10/Perama M25/M30
Check the thrust washer for wear, poor contact,
burning or other defects. Defective washers
must be replaced.
Standard Thickness
1.95-2.0mm (.
0767-.0787")
Crankshaft
center journal
diameter
42.964-42.975
(1.6915-1.6919")
45.964-45.975
(1.8096-1.8100")
42.714-42.725
(1.6817-1.6821")
45.714-45.725
(1.7998-1.8002")
42.464-42.475
(1.6718-1.6722")
45.464-45.475
(1.7899-1.7904")
F r o n t
PB049
Allowable limit
0.5mm
(.020")
Allowable limit
1 8mm (
0708 )