Inspect The Control Valves - Fluke 6270A Service Manual

6270A
Service Manual
Make sure to not interchange the coils or valves between
apply/release valves.
a. Use a 3/4 inch wrench and remove the coil-retaining nut  from the
b. Remove the coil for the valve to be inspected or replaced.
c. Remove the four screws  with a # 2 Phillips screwdriver and remove
d. Inspect the valve by using a 7/8 inch deep socket or open wrench to
To install the valves, reverse these steps.

Inspect the Control Valves

To inspect the control valves, see Figure 37:
1. After the control valve is removed as detailed in the Removing Control Valves
section, inspect the valve-body surface  and valve-base orifice  to make
sure no damage, particles, or contamination exists. The Product ships with
blue color material on the valve body .
2. Make sure the shim  is installed in the valve shaft. If not installed, poor
control and a loud buzzing sound in the control results.
3. Verify the valve assembly order .
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control valve (apply) coil  or (release) coil . This should only be hand
tight or very loosely tightened with a 3/4 inch wrench.
entire valve assembly.
remove the valve stem  from the valve base .
Figure 37. Internal Valve Inspection
Note
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