Nexen VC500 837450 - Manual (Page 10)

10 FORM NO. L-21156-F-0209
WARNING
maInTenanCe
T
o manually release The brake
:
1. Remove brake guard (Item 24).
2. Using a thin 3/4" wrench, loosen the four jam nuts
(Item 19) on the rod ends (Items 16 & 17).
3. Using a 1" wrench, rotate the turnbuckles (Item 23)
equally until a noticeable gap is visible between the
facings (Item 6) and the brake disc.
nOTe: nexen recommends rotating the turnbuckles 1/2
turn at a time on each side until the brake is completely
disengaged.
T
o reengage The brake
:
Follow instruction in friction facing adjustment
section.
manual releaSe
Table 3
General
1. Adhere to the following bolt tightening torques (See
Table 3).
2. Inspect Actuator exterior.
3. Check tightness of air line connections, and
condition of all air lines. Replace worn or damaged
air lines.
4. Inspect Friction Facings for wear. Replace before
contact is made between shoes and brake disc.
5. Lubricate items requiring lubrication (See
LUBRICATION).
actuator is spring loaded
under extreme pressure. Do
not disassemble actuator. If
actuator malfunctions, replace
the actuator or contact nexen.
Figure 9
Jam Nut
Rod End
(Item 16)
Rod End
(Item 17)
Rod End
(Item 17)
Turnbuckle
(Item 23)
Rod End
(Item 16)
Friction Facing
(Item 6)
Brake Arm
(Item 3)
Brake Arm
(Item 3)
Actuator
Cap
(Item 10)
Jam Nut
(Item 36, LH)
(Item 19)
(Item 19) (Item 36, LH)
ITem
no.
DeSCrIPTIOn TOrQue
nm [ft-lb]
15 Machine Screw
(friction facing)
12-16 [8-11]
19 Jam Nuts (linkage) 20-27 [15-20]
18 Lock Nuts (linkage) 44-57 [33-42]
33 Lock Nut (post) finger tighten,
then bend tab
36 Jam Nuts-LH (linkage) 20-27 [15-20]
aIr COnneCTIOnS
All Nexen pneumatically actuated devices require clean
and dry air, which meet or exceeds ISO 8573.1: 2001
Class 4.4.3 quality.