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TM
TESTS AND ADJUSTMENTS \ _ _ - . . . . . - ,
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NEW PLUNGER BUTTON SELECTION (50)
B Add plunger button thickness to old
dimension. Subtract
NOTE
new
dimension. The result is the required thickness for the
Due to wear during normal operation, the port
new button.
closing (pc) dimension may change slightly, mak-
ing it necessary to change button thickness.
EXAMPLE: Original button thickness is 0.107 inch (Code 5
Should the pc dimension obtained during timing
or E). Old port closing dimension was 1.109 in-
procedure (p 4-7) vary more than 0.001 inch
ches. New port closing
is 1.094 inches.
from the dimension stamped below the timing
pinhole on the pump housing, proceed as follows.
1.109
1.216
1.094
+ .107
A Identify thickness of original plunger button and refer to
0.122 in.
1.216 in.
table for plunger button thickness.
C Refer to table to determine part number of button having
the thickness closest to the calculated dimension.
Part Number
Identification
Thickness
(inches)
0.089
10 or L
853-10
0.092
K
853-9
J
0.095
853-8
H
0.098
853- 7
.
F
6
0.101
853-11
11
0.104
E
853- 5
0.107
D
853- 4
0.110
C
853- 3
0.112
B
853- 2
0.116
A
853- 1
0.119
M
853-12
0.122
N
853-13
0.125
P
853-14
0.128
R
853-15
0.131
16 or S
853-16
0.134
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