Repair
7-9
E 1999 Nordson Corporation
All rights reserved
104 330H
Issued 8/99
Manual 1-8
Whenever the air motor is disassembled, replace all the O-rings and
seals. Clean and inspect all moving parts and replace if worn. Lubricate
O-rings and seals with O-ring grease before installing. Refer to the
Parts
section
for air motor seal kit part numbers. The seal kit does not include
a new packing gland, which must be ordered separately.
1. Install the upper jam nut (10) onto the telescoping screw (21). Make
sure the recess for the special nut is facing away from the slotted
head of the telescoping screw (21). Thread the special nut (22) all
the way onto telescoping screw (21).
2. Install O-ring (9) onto the spool carrier (5). Thread the telescoping
screw (21) into the spool carrier (5).
3. Place the upper jam nut (10) between the jaws of a vise with the
slotted head of the telescoping screw pointing downward. Install the
piston (11) onto the upper jam nut (10).
4. If removed, thread the lower jam nut (12) onto the connecting rod (13)
with the beveled edges away from threaded end.
5. Thread the connecting rod (13) into the upper jam nut until it bottoms
out. Screw lower jam nut down until it contacts piston and
tighten securely.
6. Lubricate and install a new O-ring (17) into the groove of the
connecting rod (13) plunger end.
7. Install the piston/connecting rod assembly into the cylinder (20). It
may be necessary to coat internal wall of cylinder with small amount
of Nordson Vitalizer oil before inserting the piston.
8. Install a new packing gland (19) into the base (16). Lubricate and
install a new square-cut O-ring (18) into the groove in the base.
9. Screw the tie rod (26) into the base (16).
10. Lightly coat the connecting rod (13) with Vitalizer oil and carefully
slide the rod through the packing gland (19) in the base (16). Make
sure the cylinder edge fits into the groove in the base.
11. Lubricate and install new O-rings (15) onto the connecting tube (14).
Install the connecting tube into the bore in the base.
12. Lubricate a square-cut O-ring (23) and install into the groove in the
upper head (8).
Cleaning and Inspection
Air Motor Assembly
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