408-2453
DYNA-CRIMP Hydraulic Crimping Head 69066
3
of 5Re
B
Tyco Electronics Corporation
6. INSPECTION/MAINTENANCE
Make sure hydraulic pressure is released and
power supply is disconnected before following
inspection and maintenance procedures, unless
otherwise specified in the procedure.
Each crimping head is assembled and inspected
before shipment. Tyco Electronics recommends that
the crimping head be inspected immediately upon its
arrival at your facility, and at regularly scheduled
intervals, to ensure that the crimping head has not
been damaged during handling. Frequency of
inspection depends upon the following: care, amount
of use, and handling of the head; type and size of
products crimped; degree of operator skill; and
environmental conditions.
6.1. Cleaning
Remove accumulations of dirt and grease on the
crimping head, especially in areas where dies are
installed and terminals are crimped. Clean the entire
head frequently with a clean, lint–free cloth.
6.2. Visual Inspection
Refer to Figure 4 and proceed as follows:
Figure 4
Check These
Areas for Cracks Check Die Areas
for Cracks
Check for Excessi e
Wear at Pi ot Pin
and Latch Pin
1. With hydraulic pressure released, inspect the
assembled head for nicks, scratches, and cracks.
Inspect for cracks especially at the corners of the
yoke and around the top of the cylinder.
2. Inspect pivot pin holes and latch pin holes for
wear. Replace parts, as needed.
3. Activate power unit. Raise ram to UP position.
Inspect flat and round surfaces of ram for galling
(fretting or wear by friction), cracks, or oil leakage.
Release pressure and make sure that ram retracts
smoothly.
4. If head shows evidence of galling, cracks, oil
leakage, or rough cycling, return the crimping head
to Tyco Electronics for repairs. (Refer to Section 7,
REPLACEMENT AND REPAIR).
6.3. Crimping Head Check-Out Procedure
If the ram fails to return to the DOWN position after
completion of a crimping cycle, the cause may be in
the crimping head. To determine whether or not the
trouble is in the crimping head, release pressure in
the power unit. If the ram retracts, the trouble is not in
the crimping head. If ram does NOT retract, refer to
Paragraph 6.4.
6.4. Crimping Head Disassem ly Procedure
(Figure 5)
Numbers in parentheses refer to Item Numbers in
Figure 5.
1. If the head is attached to Hydraulic Power Unit
No. 69120–[ ], release the pressure by pressing
the pressure release button on the electrical
control box. Hold it for several seconds. Proceed to
Step 3 below.
2. If the head is attached to Hydraulic Foot Pump
No. 314979–1, release the pressure in the head by
pressing the return pedal on the foot pump.
3. Unscrew the collar of the coupler on the head.
4. Remove the crimping head and place it in a
vise. Use a suitable material to protect the finish on
the head.
5. Remove the set screw (9) that secures the head
assembly to the cylinder.
6. Remove the guide lock screw (10) and loosen
the guide set screw (11) enough to permit the head
to be turned counterclockwise without turning the
ram.
7. Turn the head sub–assembly counterclockwise
to remove it from the threaded cylinder.
8. Remove the ram (5), bushing (13), and ram
return spring (8).
9. Inspect for deteriorated or torn ram O–ring (6) or
back–up ring (7). Replace with new parts if
damaged.
10. Apply a thin film of hydraulic fluid (same type
used in power unit reservoir) on the surface of the
O–ring and back–up ring installed on the ram.
11. Install the ram (5), bushing (13), and ram
return spring (8) in the cylinder.
12. Install the head sub–assembly on the threaded
cylinder but do not tighten.
DANGER
