Gasboy Atlas Start-up - Manual (Page 148)

Page 6-28 MDE-4334D Atlas™ Start-up and Service Manual · July 2013
Hydraulic/Mechanical Components Meters
• After a drive-off, inspect the meter for leaks.
• Non-use of filters and strainers can significantly reduce meter life.
• Abnormally low pressure and flow rate can cause the meter to stall.
• Meter failure may be indicated by a significant change in calibration from high to low
flow rate, excessive calibration spread, or meter stall at low-flow.
Note: Other problems may also cause the same symptoms.
• After replacing the meter, always purge the system of air (refer to “Purging Air from
System” on page 6-9 ) and recalibrate the unit.
• Calibration problems are not always caused by a bad meter. Meter check valves, leaking
nozzles, binding pulsers, defective pistons, or internally leaking vapor recovery hose can
also result in calibration problems.
• A top shaft seal kit to prevent leakage at extremely cold temperatures is available.
Repairing CFT/E85 Meters
This section provides information for repairing CFT/E85 meters.
Before You Begin
Before beginning the repair, proceed as follows:
1 Read and follow the procedure in “Servicing Hydraulic Components” on page 6-6.
2 After following power-down procedures, open the nozzle into an approved container to bleed
pressure. Some residual pressure may remain.
3 Continue with the required meter service procedures.
Removing/Replacing Gasboy CFT/E85 Meters
To remove/replace the Gasboy CFT/E85 meter, proceed as follows:
1 Disconnect the pulser drive on electronic models or the computer drive on mechanical models,
from the meter output shaft.
2 Support the meter when removing the bolts.
3 Remove the discharge line flange and inlet line flange bolts.
4 Remove the meter bracket bolts.
5 Remove the meter.
6 Perform required service on the meter.
7 Inspect and clean the manifold or inlet, and discharge line mounting surfaces.
8 Install the new inlet and discharge flange O-rings.
9 Bolt the meter to the inlet and discharge flanges.
10 Bolt the meter to mounting brackets.
11 Replace the pulser drive or computer drive.