Page 7-34 Troubleshooting
Revised 10/14
ITW Dynatec
D SERIES V6 DCL ASU Manuals
Solution
1. Remove seal and bearing from pump.
Verify that all components are
correctly positioned.
2. Remove seal from pump, inspect it
and replace it if worn or damaged.
Be sure there are no burrs or other
sharp edges on pump shaft or on
installation tools that could damage
a new seal.
1.Remove seal from pump, inspect it
and replace it if worn or damaged. Be
sure there are no burrs or other sharp
edges on the rear plate o-ring groove
that could damage a new o-ring.
2. Verify that all four pump retaining
nuts are tightly assembled to the
studs.
3. Remove pump and inspect hopper.
Repair or replace hopper as necessary.
Problem Possible Cause
Adhesive leak at pump 1. Pump seal is incorrectly
shaft seal. positioned inside the seal
andbearingassembly.
2. Pump seal inoperative.
Adhesive leak at pump- 1. O -ring in pump’s rear
to-hopper interface. plate is inoperative.
2. Pump retaining nuts are
missing or loose.
3. Helicoil insert pulled out
of hopper.
Seal assembly
Pump
Rear Plate
O-ring
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