Duff-Norton TracMaster SK-6415-300 Manual - Page 7
Browse online or download pdf Manual for Controller Duff-Norton TracMaster SK-6415-300. Duff-Norton TracMaster SK-6415-300 16 pages.
Print Page
4-1. Lubrication
Duff-Norton recommends the use of the following
lubricants in conjunction with proper maintenance
procedures of this unit, Mobile XHP-461 or XHP-462.
4-2. Required Tools
A bearing puller, press, soft jaw table clamp and common
hand tools are required for proper disassembly and
assembly.
4-3. General Procedures
Duff-Norton recommends following these procedures
during disassembly and assembly:
1. Tag critical parts to facilitate reassembly.
2. Mark mating surfaces to ensure proper meshing.
3. Clean and lubricate parts as required.
4. All seals must be replaced at time of rebuild, if
damaged.
5. All screws, washers and other small common parts
must be replaced if mutilated in any way.
4-4. Disassembly
Disassemble the 6415 Series DC actuator as follows
while referring to Figure 5-1. Read instructions thoroughly
before disassembling.
Disassembly should be accomplished on a clean cloth.
1. Clamp actuator housing (42) in vise (use soft jaws).
Unit should be in horizontal position with outer tube
(55) up.
2. Remove screws (1) from limit switch box cover (11) and
remove limit switch box cover (11) and gasket (12).
3. Remove nut retainer (14).
If unit has potentiometer assembly (26) and
potentiometer (26a) or gear (26b) is not damaged
proceed to Step 4.
a. Loosen nut (26c) and remove potentiometer
assembly from nut retainer (14).
Take care not to damage potentiometer when removing
gear.
b. Remove gear (26b) from potentiometer (26a).
Washer and nut do not have to be removed from
NOTE
NOTE
CAUTION
Section IV
Maintenance
potentiometer (26a).
4. Remove screws (1) from capacitor box cover (2) and
remove cover (2) and gasket (3). Remove insulation
(4) from capacitor box.
5. Remove capscrews (71) from cover (9) and remove
fuse holder (70) from cover (9) (until lower terminal of
fuse is exposed). Remove fuse holder cap (70) and
fuse (72) from fuse holder body (70). Remove fuse
holder body (70) completely from unit.
6. Disconnect jumper wires (17 and 18) and motor
(53) lead wire terminals from switches (16). Remove
jumper wires (17 and 18) and pull motor (53) lead
wires into capacitor box.
7. Remove set screw (36) from housing (40).
8. Disassembly of Motor
a. Remove motor thru-bolts. (It is not necessary
to remove screws totally from motor.) With
screwdriver, pry (front end bell near housing)
motor (53) away from housing (42) (care must be
taken to prevent motor end bells from separating
from motor (53) shell and that motor lead wires
are not damaged).
b. Remove "O" ring (52) and rubber grommet (50).
9. Remove button head cap screws (7) and lock
washers (8). Remove cover (9) and gasket (41).
(Cover may have to be pried up with screwdriver, or
lightly tapped up with wooden or plastic hammer.)
Remove dowel pins (27).
10. Remove thrust washer (35) and thrust bearing
(36) from cover (9). Thrust washer (35) and thrust
bearing (36) may stay on spacer nut (37) in housing
(42) and can be removed in Step 18.
11. Remove limit switch shaft assembly, consisting of
limit switch shaft (22), limit switch nuts (23) and worm
(24), from cover (9). Allow limit switch shaft (22) to
drop out of flange bearing (25). Tilt shaft assembly
and remove from cover (9).
If limit switch nuts (23) or worm (24) do not have to be
replaced, proceed to Step 14.
12. Thread limit switch nuts (23) off of limit switch shaft (22)
13. Remove worm (24) from limit switch shaft (22).
7
NOTE