20
LCA060S and LCA120DHoists
Refer to Dwg. MHP1465.
1.
It is recommended that carry handle (28) on the brake end
be removed prior to brake disassembly.
2.
Carefully remove the six brake cover screws (31) one half
turn at a time each, until spring compression is relaxed.
Remove brake cover (37) and eight brake springs (38).
3.
Remove brake piston (33).
4.
Remove retainer ring (36) from sun gear (41) and pull out
brake sleeve (39).
5.
Remove 'O' rings (8) and (32) from brake cover (37) and
brake piston (33).
6.
Check brake plate wear tolerance.
Motor Disassembly
2 HP without Emergency Stop or Overload
Refer to Dwg. MHP1466.
1.
Remove four capscrews (21) and pull motor assembly from
motor housing.
2.
Remove capscrews (8) from motor flange (9) and pull
motor flange assembly from motor housing (1).
3.
Separate motor housing (1) from motor cover (22).
4.
Immobilize the idle gear (4) and drive gear (7) with a rod
between the teeth and remove locknuts (3).
5.
Remove idle gear (4) and drive gear (7) from motor flange
(9).
6.
Remove capscrew (6) and washer (5). Tap bearings (2)
from motor flange.
2 HP with Emergency Stop and Overload
Refer to Dwg. MHP1467.
Follow steps 1 through 6 immediately above for initial motor
disassembly.
1.
Remove the three capscrews (36) from cover (27).
2.
Pry cover (27) from housing and remove spring (28) and 'O'
ring (29).
3.
Remove plug (50) and seal washer (49) from motor cover.
4.
Remove capscrews (21, 39 and 54) and lift off cover (38).
5.
Remove diaphragm (34). Remove capscrew (30) and
separate valve cones (31) and (35), seal washers (33),
washers (32) and spacer (37).
6.
Remove diaphragm assembly (46) from housing. Unscrew
valve cone (47) and nut (44). Remove washer (45) and 'O'
ring (48) from valve cone.
7.
Remove spring (43), spring receiver (42) and ball (52) from
cover housing. Unscrew screw (40) with self locking nut
(41) and seal ring (51) from same cover.
8.
Check dowel pins (12) are not damaged.
4 HP Motors
Refer to 2 HP motor disassembly instructions and Dwgs.
MHP1455, MHP1456 or MHP1457 in Parts Section.
Reduction Housing
LCA015S and LCA030D Hoists
Refer to Dwg. MHP1462.
1.
Remove the three nuts (53), lockwashers (54) and
capscrews (52) which secure the motor assembly and gear
housing assembly to the chain guide housing (9).
2.
Carefully pry gear housing assembly (23) from chain guide
housing (9).
3.
Disassemble brake parts as described in "Accessing the
Brake."
4.
Remove retainer ring (32) in planetary support.
5.
Carefully tap on the motor end of the pinion shaft (21) until
it can be removed from the brake end of the gear housing.
6.
Remove pinion (11) and gear cover (48).
7.
Remove ring gear (18) and planetary support assembly.
8.
Remove bearings (17) and (40) from planetary support (19).
9.
Slide out satellite axles (47), bearings (46), spacers (45) and
planetary gears (44).
10. Remove ring gear (20).
LCA030S and LCA060D Hoists
Refer to Dwg. MHP1464.
1.
Remove the three nuts (13), lockwashers (12) and
capscrews (11) which secure the motor assembly and gear
housing assembly to the chain guide housing (52).
2.
Carefully pry gear housing assembly (31) from chain guide
housing (52).
3.
Using the two puller screw holes (M6 mm) provided in the
gear cover (55) remove the gear cover.
4.
Tap drive pinion (17) from the gear side to separate parts.
Remove bearing (44), spring washer (19), ring gear (18)
and gear cover (55) from drive pinion (17).
5.
Remove oil seal (57) and 'O' rings (54) and (56) from gear
cover (55).
6.
Remove 'O' ring (16) from drive pinion (17).
7.
Remove planetary assembly.
8.
Refer to "Accessing the Brake" to remove brake cover.
9.
Remove retainer ring (36) from sun gear (20) and pull out
brake sleeve (39).
10. Pull sun gear (20) from the motor side of the housing.
11. Remove retainer ring (48) from gear housing bore. Tap on
ring gear (45) hub from the brake side to remove.
12. Remove retainer ring (41) from ring gear (45) and tap out
bearing (43). Remove and discard 'O' ring (47). Always
replace 'O' ring (47) as it is normally damaged during
disassembly.
13. Remove friction discs (27) and steel discs (28) from gear
housing.
14. Slide planet axles (23) from planetary support and remove
bearings (21), thrust bearings (25), spacers (22), thrust rings
(26) and planetary gears (24).
15. Remove remaining bearing (44) from planetary support
(46).
LCA060S and LCA120D Hoists
Refer to Dwg. MHP1465.
1.
Remove the three nuts (52), lockwashers (51) and
capscrews (50 and 60), nuts (61) and lockwashers (62)
which secure the motor assembly and gear housing
assembly to the chain guide housing (12).
2.
Carefully pry gear housing assembly (30) from chain guide
housing (12).
3.
Remove brake assembly as described in "Accessing the
Brake."
4.
Using the two puller screw holes (M6 mm) provided in the
gear cover (13) remove the gear cover. Remove oil seal
(53) and 'O' rings (9) and (14) from gear cover (13).
5.
Remove ring gear support (54).
6.
Remove ring gear (16) from gear housing (30). Remove
retainer ring (15) from ring gear.
7.
Pull planetary support (48) assembly from gear housing.
8.
To disassemble planetary assembly drive pins (25)
completely through to the inside of the planetary support
(48). Push planet axles (49) out of planetary support.
Remove bearings (21) and (24), spacers (20), thrust rings
(26) and planetary gears (22) from planetary support (48).
9.
Remove capscrews (27) from ring gear support (45).
Remove ring gear (47) and ring gear support from gear
housing (30).
10. Remove friction discs (43) and steel discs (44).
Summary of Contents for LCA015
Page 26: ...25 SERVICE NOTES ...
Page 27: ...26 SERVICE NOTES ...
Page 31: ...30 LCA030S AND LCA060D HOIST ASSEMBLY PARTS DRAWING 3 and 6 ton Hoist Capacities Dwg MHP1464 ...
Page 33: ...32 LCA060S AND LCA120D HOIST ASSEMBLY PARTS DRAWING 6 and 12 ton Hoist Capacities Dwg MHP1465 ...
Page 50: ...49 SERVICE NOTES ...