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Page Title:
Oil pump impeller shafts, impellers, and bushing-type bearings. |
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 Wear limits
Field
Depot
Sizes and fits
Ref.
Fig.
maint
maint
of new parts
Point of measurement
No.
letter
A
Relief valve spring:
2.3400
F r e e length ----------------------
Load at 2.100-inches - - - - - - - - - - - - -
51 lbs 0.5 lbs
1.8800
Maximum solid height -------------
0.8110 to 0.8120
0.8100
0.8105
B
Outside diameter of relief valve -----
0.8160
0.8155
0.8140 to 0.8150
C
Inside diameter of pressure relief
valve housing bore.
0.0050L 0.0045L
0.0020L to 0.0040L
B-C
Fit of relief valve in housing --------
(2) Oil pump impeller shafts, impellers, and bushing-type bearings.
0.6910 to 0.6920
0.6940
0.6930
D
Inside diameter of bushing-type bear-
ings .
0.6880
0.6885
0.6890 to 0.6900
J
Outside diameter of pressure pump
and scavenger pump bearing surfaces
on oil pump impeller drive shaft.
0.0010L to 0.0030L
0.0050L 0.0035L
Fit of oil pump impeller shaft in
D-J
bushing-type bearing.
E
Outside diameter of split bearings.
(Press fit in bore dimension F
below).
0.8135
0.8130
0.8120 to 0.8130
Inside diameter of oil pump impeller
F
shaft bushing-type bearing bores
in oil pressure and scavenger pump
housings.
0.4975
0.4985 to 0.4990
0.4980
L
Outside diameter of scavenger pump
cover bearing surface end of im-
peller drive shaft.
0.5025
0.5015
0.4995 to 0.5005
Inside diameter of impeller drive
Q
shaft bushing-type bearing cover.
0.0005L to 0.0020L
0.0040L 0.0030L
Fit of impeller drive shaft in bush-
L-Q
ing-type bearing.
0.6245 to 0.6255
0.6260
Inside diameter of scavenger oil pump
P
0.6255
housing bore.
Outside diameter of bushing-type
R
bearing. (Press fit in bore dimen-
sion P above).
Outside diameter of bushing-type
S
bearing. (Press fit in impeller
bore dimension V below).
0.5035 to 0.5045
0.5065
T
0.5055
Inside diameter of driven impeller
bushing-type bearing.
0.5020 to 0.5025
W
o* 5015
Outside diameter of oil pump driven
0.5017
impeller shaft.
T-W
0.0010L to 0.0025L
0.0045L 0.0035L
Fit of driven impeller shaft in bush-
ing-type bearing.
0.5015
X
005000 to 0.5010
Inside diameter of driven impeller
0.5012
shaft bore in pressure oil pump
housing.
0.0005T 0.0008T
W-X
0.0010T to 0.0025T
Fit of driven impeller shaft in hous-
ing bore.
0.6245 to 0.6255
0.6260
V
0.6257
Inside diameter of pressure and scav-
enger oil pump driven impeller.
341
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