Issue
S-E MD20 Actuator Clamp Drive Shaft Clip fouling LMD/AR-MBF Linkage Kit Mounting Platform inhibits Actuator rotation.
Environment
S-E MD20 Actuator installed on Satchwell MBF Valve Body.
Cause
S-E MD20 Actuator Clamp Drive Shaft Clip cut out undersized.
Resolution
- Measure diameter of S-E MD20 Actuator Clamp Drive Shaft Clip cut out.
- S-E MD20 Actuator Clamp Drive Shaft Clip cut out diameter should be 47mm
- Replace S-E MD20 Actuator Clamp Drive Shaft Clip with another having modified cut out if dimension less than 47mm.
The diameter of the cut out in the original LMD/AR-MBF Linkage Kit Mounting Platform was such that the MD20 Actuator Drive Shaft Clip could be prevented from turning freely with the Drive Shaft.
The LMD/AR-MBF Mounting Platform was modified in August 2007, when the diameter of the cut out in the Mounting Platform was increased to 47mm, thus overcoming the fouling of the MD20 Actuator Drive Shaft Clip.
It is possible to ascertain whether the LMD/AR-MBF Mounting Platform in use is of the original or modified design by measuring the diameter of the cut out in the Mounting Platform
If the diameter of the LMD/AR-MBF Mounting Platform cut out is less than 47mm, then the MD20 Actuator Drive Shaft Clip will foul the LMD/AR-MBF Mounting Platform.
The MD20 Actuator Drive Shaft Clip however is retained in a groove within the Drive Shaft and whilst the Clip may be prevented from turning freely with the Drive Shaft, the turning of the Drive Shaft itself will not be impeded.
