Chief Manufacturing Vibration Mount CMA-347 - Manual (Page 6)

Model CMA-347 Installation Instructions
6
Set-up For Over 15 Pounds
The mount is shipped pre-assembled for applications
under 15 pounds.
If the mount is set-up to accommodate a weight of up to
15lbs (as shipped), it needs to be reconfigured to work
properly with weights over 15lbs.
WARNING: DO NOT attempt to reconfigure the mount
while installed. Properly un-install mount and place on
a flat stable surface before performing the procedure
below.
To set-up the mount for applications over 15lbs:
1. Un-install mount following the instructions outlined in
the Removal section of this document.
2. Loosen and remove 1/4-20 Nylock nut (110), 1/4"
fender washer (130), and stepped sorbothane
damper (40) located underneath mount arm and set
aside for reuse. (see figure 5)
3. Slide 1/4-20 x 4" tap bolt (120) upward, out of mount
top (10).
NOTE: Make cetrtain hardware group B (see figure 5)
stays in place when removing 1/4-20 x 4" tap bolt
(120) and associated hardware.
4. Remove hardware group A (see figure 5) keeping
1/4-20 x tap bolt (120) for reuse in 15lb-35lb
configuration.
5. Install 1/4" machine washer (60), stepped dampers
(100), and long heavy gauge spring (90), onto 1/4-20
x 4" tap bolt (120). (see figure 6)
6. Insert 1/4-20 x 4" tap bolt (120) with washers and
dampers through mount top (10), group B hardware
(see figure 6), and mount bottom (20). (see figure 6)
7. Install stepped sorbothane damper (40), fender
washer (130), and Nylock nut (110) onto 1/4-20 x 4"
tap bolt (120).
8. Tighten all the parts installed in Step 1, Step 2 and
Step 3 using a 1/4-20 x 4” tap bolt (120) and 1/4-20
Nylock nut (110) until a slight preload is on the
springs.
NOTE: Repeat steps 2 through 8 for the remaining two
hardware sets.
Figure 5: Remove 0-15lb Application Hardware.
Figure 6: Install 15lb-35lb Application Hardware.
(40)
(10)
(20)
(120)
(130)
(110)
(130)
(50)
(130)
(80)
(50)
(130)
(50)
(130)
(70)
(130)
(50)
A
B
(90)
(40)
(10)
(20)
(120)
(130)
(100)
(100)
(110)
(60)
B