Perkins 103-06, Workshop Manual

Page: 30 / 80

B. Oil Seal contact face and oil hole
Check the oil seal contact face for damage
or wear.
Check oil holes for clogging.
C. Crankshaft journal and pin for stepped wear.
Take four measurements (AA and BB
diameters at positions "1" and "2"). If the
maximum difference between the
measurements is more than allowable limit,
correction is required.
1
103-09/10/Perama M25/M30
Shaft diameter of crankshaft pin
Standard
diameter
Allowable
limit
Standard 38.964-
38.90mm
38.975mm
(1.5340- (1.531 ")
1.5344")
0.25mm U.S. 38.714-
38.65mm
38.725mm
(1.5241- (1.5216")
1.5246")
0.50mm U.S. 38.464-
38.40mm*
38.475mm
(1.5143- (1.5118")
1.5147")
Cross Section of
Pin and Journal
When measured diameter is less than the
allowable limit, correct by grinding and use
undersize bearings and bush.
103-09/10/Perama M25/M30
Shaft diameter of crankshaft journal
Standard
diameter
Allowable
limit
Standard 45.964- 45.9mm
45.975mm
(1.8096- (1.807")
1.8100")
0.25mm U.S. 45.714-
45.65mm
45.725mm
(1.7997- (1.797")
1.8001 ")
0.50mm U.S. 45.464- (45.40mm*
45.475mm
(1.7899- (1.787"*)
1.7903"')
If the diameter is less than this value, the
crankshaft must be replaced with new.
103-06
Crankshaft journal shaft diam. (o)
Assy'd std. value Repair req. value
No. 1
42.964-42.975 42.90
Standard
No.2 (1.6915-1.6919") (1.689")
No.3 45.948-45.959 45.90
(1.8090-1.8094") (1.807")
U.S. 0.25 No. 1 42.714-42.725 42.65
(.01") No.2 (1.6817-1.6821") (1.679"
No.3 45.698-45.709 45.65
(1.7991-1.7996") (1.797")
U.S. 0.50 No. 1
42.464-42.475 42.40*
(0.02") No.2 (1.6718-1.6722") (1.669")
No.3
45.448-45.459 45.40*
(1.7893-1.7897") (1.787")
LranKsnan pin aiameier to) iu s-uo
O.D. finished size
Repair req. valu
Standard 34.964.34.975
(1.3765-1.3770")
34.90
(1.374")
U.S. 0.25
(.01")
34.714-34.725
(1.3667-1.3671")
34.65
(1.364")
U.S. 0.50
(.02")
34.464-34.475
(1.3568-1.3573")
34.40*
(1.354"
* Replace crankshaft if U.S. 0.50 is exceeded.
A
Allowable difference (stepped wear)
0.05mm (.0019")
1
2
e