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7-4
Repair
Replacing Gear Pump
Attaching Gear Pump
P/N 7146386A
(contd.)
(contd.)
Important Regarding Coupling
1
2
Fig. 7-4
S
Turn the half shells (1) such that the diagonal surfaces of the pump shaft
(2) rest on those of the coupling half shells (Refer to Fig 7-4).
S
The coupling half shells must be tightened such that the gaps are the
same size (Refer to Fig. 7-4).
Extract from manufacturer's installation and operating instructions:
S
The drive shaft and output shaft should be parallel* to one another. If the
axes lean towards one another, excess load is applied to the edges of
the bearings, causing premature wear.
S
The coupling may not be twisted axially. The intermediate disk should
move freely.
S
The coupling should not be disassembled. Interchanging of coupling
links and disks, damaged sealing rings, polluted bearings, etc. can
cause premature malfunctioning.
S
All three coupling disks must be aligned to the dimension** of the shaft
offset. If the intermediate disk is extremely off-center − meaning that the
coupling links are no longer parallel − the coupling may be destroyed
upon startup.
* = axially aligned
** = within the permitted shaft offset
VBN w/o Control System
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E 2008 Nordson Corporation
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Troubleshooting
