Flowserve Valtek VL-C Spring Cylinder Linear Actuators - Manual (Page 4)

54-4 Flowserve Corporation, Valtek Control Products, Tel. USA 801 489 8611
9. Remove the actuator stem O-ring.
NOTE: The stem bushing is pressed into the yoke.
The actuator stem O-ring can be replaced without
removing the bushing.
10. Use an appropriately sized press to push a worn or
damaged bushing out of the yoke.
Reassembling the Actuator
To reassemble the cylinder actuator, refer to Figures 1
through 4:
1. All O-rings and the quad-seal should be replaced
and lubricated with a calcium complex grease
(DuBois MPG-2 or equivalent). Silicone O-rings
must be lubricated with Magnalube-G lubricant or
equivalent.
2. Thoroughly clean all internal parts before beginning
assembly. Check the cylinder bore for scratches,
pitting or worn areas. Lubricate cylinder wall and all
internal surfaces with the appropriate lubricant.
NOTE: Applying a light coating of lubricant to the
Figure 2: Air-to-extend Cylinder Actuator
NOTE: Item numbers correspond directly to actuator's bill of material. Refer to it for specific part numbers.
Parts listed change location upon reversing air action. No new parts are required.
Stem Spacer
(Item No. 228)
Spring Button
(Item No. 227)
Spring
(Item No. 229)