Invacare ORBIT Service Manual page 28

PROCEDURE 5
DUAL TILT MECHANISMS (FIGURES 6
AND 7).
C
1. Remove the rear wheels. Refer to REMOVING/IN-
H
STALLING THE REAR WHEELS in PROCEDURE
A
7 of the owner's manual, part number 1073955.
N
G
2. If so equipped, remove the two (2) mounting screws
I
that secure the crossbar to the foot activated wheel
N
lock. Refer to CHANGING THE WIDTH OF THE
G
FOOT ACTIVATED WHEEL LOCK in this PROCE-
DURE of the manual.
T
H
3. Remove the cable assembly from the tilt mecha-
E
nisms. Refer to REMOVING/INSTALLING/ADJUST-
ING THE CABLE ASSEMBLY in PROCEDURE 9
W
of the owner's manual, part number 1073955.
I
4. Remove the mounting screws and locknuts that se-
D
T cures the top portion of the tilt mechanisms to the
H underside of the seat plate assembly.
5. Remove the mounting screws, and locknuts that
secures the lower portion of the tilt mechanisms to
the mounting brackets.
NOTE: Note the position of the adjustable height pivot
tube to maintain the same seat height. See FIGURE 6 -
DETAIL "A" .
S
E
6. Remove the mounting screws and locknuts that se-
C cure the seat plate assembly to the to the base frame.
T
7. Lift the seat plate assembly off and set aside.
I
8. Remove the mounting screws, washers, and lock-
O
nuts that secures the mounting brackets to the top
N
front crossmember of the base frame.
C
CHANGING THE WIDTH-SECTION C
NOTE: Note the position of the top front crossmember
for proper reinstallation of the NEW top front
crossmember. FIGURE 6 - DETAIL "A" shows the rela-
tionship between the adjustable height pivot tubes and
the angle of the mounting bracket. This relationship must
be maintained for your desired height adjustment, other-
o
wise, 0 tilt minimum and 45
obtainable.
9. Remove the six (6) mounting screws that secure the
crossmembers to the base frame.
10. Install the NEW top crossmember (the crossmember
with the three (3) holes) where the existing top
crossmember was just removed. Secure with the
existing two (2) mounting screws and washers.
Torque 75-80 inch pounds.
11. Install the remaining two (2) NEW crossmembers
where the existing crossmembers were just removed.
Secure with the existing four (4) mounting screws
and washers. Torque 75-80 inch pounds.
12. Secure mounting brackets to the top front
crossmember with the existing mounting screws,
washers and locknuts. Securely tighten.
NOTE: Single tilt mechanism will require one (1) mount-
ing bracket centered. Dual tilt mechanisms will require
two (2) mounting brackets.
13. Proceed to CHANGING THE WIDTH OF THE SEAT
PLATE ASSEMBLY in this PROCEDURE of the
manual.
28
o
tilt maximum will not be