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713 Manipulator Arm
Refer to Dwg. MHP1888 on page 30.
1.
Shut off air supply and disconnect air lines. Remove
capscrews (10), washers (9), nuts (20) and manipulator arm
from carriage or support.
2.
Remove capscrews (11), washers (19), nuts (20) and pivot
assembly (7) from rear mast (3).
3.
Remove hook assembly from end of wire rope.
4.
Remove wire rope, refer to 'Wire Rope Replacement.'
Remove capscrews (17), nuts (15) and bushings (16) which
secure the Balancer. Remove the Balancer and pull
remaining wire rope from arm.
5.
Bend lockwasher (52) tab free from locknut (51). Remove
locknut, lockwasher and washer (53).
6.
Separate front arm (2) from rear arm (3). Remove bearing
cups (24) and bearing cones (23).
7.
Remove capscrew (40) and nut (45) from front mast (2).
Separate bearings (38) and cable sheave (39) from front
mast.
8.
Loosen setscrew (44) and slide air manifold (5) from front
mast (2).
Pivot Removal and Disassembly
Refer to Dwg. MHP1567 on page 26 and MHP1888 on page 30.
1.
Remove pivot assembly (7) from arm and mounting carriage/
column.
2.
Reference Pivot Assembly drawings MHP1566 and
MHP1873 on page 29 for component identification.
3.
Bend locking tang on lockwasher (65) away from nut (66).
4.
Use a 3-5/8 in. spanner with a 0.360/0.365 in. (9.1/9.3 mm)
slot and remove spanner nut (66).
5.
Remove lockwasher (65).
6.
Remove bearing hub (64) from bearing post (61). Removal
may require the use of a hammer and brass or non-marring
punch to lightly tap bearing and hub from bearing post.
7.
Remove bearing (62) from bearing hub (64).
8.
Remove bearing (68) from bearing post (61).
9.
Inspect bearing assemblies (62) and (68) for smooth rotation,
binding, rust, and corrosion. None should be present or
visible.
Cleaning, Inspection and Repair
Examine disassembled components and fasteners for wear or
damage. If worn or damaged, do not reuse. During reassembly all
damaged and worn components should be replaced to prevent
component failure which may result in injury or property damage.
It is recommended that lockwashers be discarded and replaced
with new ones after each use.
Use the following procedures to clean, inspect and repair the
Manipulator Arm and associated components.
Cleaning
Thoroughly clean all Manipulator Arm components in solvent.
The use of a stiff bristle brush will facilitate the removal of
accumulated dirt and sediments on the columns. Wipe off each
part after cleaning. Remove all old Loctite® residue.
18
Inspection
All disassembled parts should be inspected to determine their
fitness for continued use. Pay particular attention to the following:
1.
Inspect all threaded items and replace those having damaged
threads.
2.
Inspect all bearings for freeness of rotation and wear.
Replace bearings if rotation is rough or bearings are worn.
3.
Inspect wire rope pulleys. Replace worn bushings and
pulleys.
4.
Inspect stop pins, stop plates and bumpers for damage.
Replace if worn or deformed.
5.
Inspect all pivot pins for wear. Replace pins that are scored
or worn.
6.
Inspect air lines for cracks, cuts and leakage.
7.
Inspect air fittings for cracks, leakage and security.
Repair
Actual repairs are limited to the removal of small burrs and other
minor surface imperfections. Use a fine stone or emery cloth for
this work.
1.
Worn or damaged parts must be replaced. Refer to the parts
section for specific replacement parts information.
2.
Inspect all remaining parts for evidence of wear or damage.
Replace or repair any part which is in questionable
condition. The cost of the part is often minor in comparison
with the cost of redoing the job.
3.
When fastening components, always use Loctite® 243 on
capscrew threads.
Assembly
700C Manipulator Arm
Refer to Dwg. MHP1567 on page 26.
1.
Install bearings (38) in cable sheave (39). Position sheave
assembly in front mast (2) and secure with capscrew (40) and
nut (45).
2.
Install pulleys (27) in center link (1) with spacer (25), thrust
washers (26) and capscrew (29).
3.
Install shim sets (22) and bearing cones (23) on center link
(1) pivot posts. Use positions noted during disassembly.
4.
Install bearing cups (24) in connector plates (4).
5.
Install connector plates (4) on center link (1) and position on
rear mast (3). Secure connector plates in position with
capscrews (13) and washers (14). Do not tighten capscrews.
6.
Drive pins (8) into connector plates and mast until flush.
Torque capscrews.
7.
Repeat steps 4 and 5 to mount front mast.
8.
Install cable guide (43) on front mast and secure with screws
(40) and pins (41).
9.
Install the Balancer on rear mast (3). Secure with capscrews
(17), nuts (15) and bushings (16). Feed wire rope through
mast. Ensure wire rope sits in pulley grooves. Refer to 'Wire
Rope Replacement.'
10. Slide air manifold (5) onto front mast (2). Tighten setscrew
(44).
11. Install pivot assembly (7) on rear mast (3) with capscrews
(11), washers (19) and nuts (20). Torque to 72 ft. lbs. (98
Nm).
12. Install manipulator arm to carriage or support with
capscrews (10), nuts (20) and washers (9). Connect air line.
13. Install hook assembly on end of wire rope and adjust per
Lash-Up procedure in "INSTALLATION" section.
MHD56162 - Edition 2
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