Instruction Manual
D100423X012
V500 Valve
July 2017
17
7. Remove the plug and thrust washer (key 12) from the valve body.
Note
Two shaft bearings (key 6) are located inside the valve body on either side of the valve plug. Only one of these two bearings is
identified by key 6. The other bearing is located along the valve shaft on the other side of the valve plug.
8. If the shaft bearings are to be replaced, remove the packing (key 13).
9. If the bearing closest to the packing requires replacement and cannot be removed by hand, press it out using a ram
with dimensions given in figure 9 and table 10.
CAUTION
Ensure the bearing stop is not moved when pressing out the bearing. Movement may cause the new bearing and valve plug
to not be centered with the seal, causing possible leakage or damage of the seal/plug.
Insert the ram through the packing box and press the bearing into the valve body cavity. The bearing stop (key 7) does
not need to be removed; take care not to move the bearing stop when pressing out the bearing.
10. If the second bearing (key 6) requires replacement and cannot be removed by hand, use one of the following
methods:
D Knock or pry the bearing out, or
D Use the valve shaft as a piston to drive the bearing from the valve body. To accomplish this, first, fill the bearing bore
with a heavy grease and then insert the end of the shaft back through the valve body and into the grease‐filled
bearing. Protect the splined end of the shaft with, for example, a block of wood; then strike the protected end.
When the shaft is struck, it will act as a piston, pushing the grease into the bearing bore. The grease will then force
the bearing out of the bore and farther along the shaft. Soon, the bearing will be positioned for easy removal.
11. If used, remove the O‐rings (keys 19 and 20) from the bearings. Also, remove the pipe plug (key 29).
Table 10. Ram Dimensions
VALVE SIZE, NPS
A MAXIMUM
MINIMUM
L
mm Inches mm Inches
1
15.1
14.7
.594
.578
114 4.50
1-1/2
18.3
17.9
.719
.703
114 4.50
2
18.3
17.9
.719
.703
127 5.00
3
27.8
27.4
1.094
1.078
127 6.50
4
34.1
33.7
1.344
1.328
165 6.50
6
42.1
41.7
1.656
1.641
197 7.75
8
42.1
41.7
1.656
1.641
129 9.00
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