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5-8
Maintenance
Gear Pump
Checking for Leakage
Variseal
Fig. 5-6
P/N 7146386A
Gear Pumps with Variseal
The VarisealR is a single-direction shaft seal. It consists of an asymmetric
U-shaped sealing body, tensed and held in place by a V-shaped steel
spring. To prevent the seal from turning, it has a bracing flange that is
clamped in place axially when installed.
Variseals are fixed in place on the gear pump with a flange. If material
escapes along the shaft, the Variseal must be replaced.
Replacing Variseal
1. Detach the gear pump (Refer to section Repair).
2. Release the screws (1) and slide the flange (3) off of the shaft.
3. Remove the old Variseal (2).
4. Install a new Variseal (2).
5. Slide the flange (3) onto the shaft.
6. Tighten the screws (1).
7. Attach the gear pump again (Refer to section Repair).
1
2
3
Fig. 5-7
VBN w/o Control System
E 2008 Nordson Corporation
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Troubleshooting
