J3 PLUS BACK
V
I
. INSTALLATION
& ADJUSTMENT
JAY®
252148 Rev. A
14
7. Function check and micro adjustments to height, depth, and
angle
a. Attach the J3 Plus Back to the top and bottom mounting
hardware receivers and push down until the assembly is
locked. There should be a click when locked properly.
b. If needed, continue small adjustments until the back can
be attached and/or removed smoothly and locks
correctly into the mounts.
c. To make micro-adjustments, loosen bolts (I) and (J). This
will allow for minor changes in height, depth, and angle.
Re-tighten all bolts to required specs and test back
function and quick-release.
d. To make macro-adjustments, loosen, but do not remove,
bolts (A), (C) and (G). (Fig. 13, 14, and 15). Position
backrest to desired height, depth, and angle.
e. Re-tighten all bolts to required specs and test back
function and quick-release.
8. ADJUSTING J3 PLUS BACK HEIGHT, DEPTH AND
ANGLE
Once the initial installation is complete, adjustments can be made
with the user seated in the chair for a personalized fit. Make sure
that the user does not apply full to the back until the hardware
has been fully tightened to the specified torque requirements.
1.
Height adjustment
a. With the user seated in the chair, identify the correct
height of the back.
b. Have the user slide forward slightly and loosen the
nuts (I) with 10mm wrench.
c. Move back to correct height and tighten the nuts to
75-85 in-lbs (8.5-9.3 Nm).
2. Depth and angle adjustment
Tilt (TH) and 4-point (FS) hardware has approximately
2 inches of depth adjustment.
a. Using a 10mm wrench, loosen the left and right hex
screws (J) on the bracket slots.
b. Adjust the depth and/or angle settings and securely
tighten the screws to lock in the adjustment.
Recommended torque specification is 100-110 in-lbs
(11.3-12.4 Nm).
c. If additional depth is needed, remove the J3 Plus Back
from the receivers. Remove the screws (K) from the
receiver using a 4mm hex key and reposition the
hardware to the desired depth.
d. After adjusting to the correct depth, tighten the
screws to 25-35 in-lbs (2.8-4 Nm)
E. CHECK OUT
Ensure that all hardware has been properly tightened
according to suggested specifications.
a.
Make sure the J3 Plus Back is locked and the
locking pin is inserted into the receiver.
b.
Check that the J3 Plus Back can be attached
smoothly and securely by attaching and
removing the assembly several times.
c.
Double check fit and comfort for the user
before putting the J3 Plus Back into use.
d. Failure to follow this check out procedure
could result in injury and/or damage to your
J3 Plus Back and/or components.
WARNING
1
7
1
5
1
7
1
6
13 1
4
3. Vanity Shell Extension Adjustment
a. Using a 5/32 Allen Wrench, loosen the button head
cap screw (A) on both hinges to allow rotation of
the vanity flap.
b. Rotate the vanity flap into the desired position.
c. Tighten both button head cap screws (A) to secure
the vanity flap in position.
18
18
AA
