FT4827

MQR 2000 – Wheelchair Hardware Replacement
DESCRIPTION
Replace the bottom and upper T-bolts from the
seats with the wheelchair hardware
TIME
1 hour
Affected Contracts
Contract
L958
L959
LA23
LB29
LB59
LB99
LA73
LA76
LB78
LC32
TOTAL
Number of vehicles
4
1
46
36
41
36
4
125
1
121
415
Bill of Material
QTY
8
8
16
16
Part Number
N99199-01
N99199-02
N0224000
N84003
Description
Rectangular Head Bolt
Rectangular Head Bolt
Hex Nut, 3/8F ZP
Washer Flat 3/8”
Replaces Part Number
N44620-01
N44620-02
N37109
NA
WARNING: Follow your internal safety procedures.
1. Park the bus with the transmission in neutral (N). Place the battery switch and the master
control switch to the OFF position.
2. Localize the seats with the wheelchair hardware (see Fig.)
Affected seats on the 60ft fleets
Affected seats on the 40ft fleets
3. Remove the 4 nuts P/N 37109 that affixes the seats onto the bottom rail with a 9/16’’ (14
mm) socket (see Fig.).
T-bolts to be removed from the bottom fiber rail
4. Remove the 4 nuts P/N 37109 that affixes the seats onto the upper rail with a 9/16’’ (14
mm) socket (see Fig.).
T-bolts to be removed from the upper aluminum rail
5. Carefully disconnect the seat from the upper and bottom T-bolts by pulling it up and
forward (towards the center of the bus).
Move the seat by pulling it up and forward (towards the center of the bus)
6. Remove all T-bolts from the upper and bottom rail channels. They are one time use
only.
Previous version of T-bolt (one time use only) and flanged nut to be removed and discarded.
7. Confirm that neither the upper aluminum rail nor the bottom fiber rail have any
damage.
8. Install 4 new T-bolts PN N99199-01 where the previous N44620-01 T-bolts were
installed in the upper rail channel, making sure the top puncture mark faces the center
of the bus (see Fig.).
9. Install 4 new T-bolts PN N99199-02 where the previous N44620-02 T-bolts were
installed in the bottom rail channel, making sure the top puncture mark faces the center
of the bus (see Fig.).
Example of T-bolt with top puncture facing the center of the bus
10. Insert the upper and lower seat brackets onto the T-bolts. Confirm that the upper and
lower brackets are lined up.
11. Insert the new washers N84003 and nuts N0224000. Torque them to 21 N.m (15 lb.ft)
with a 9/16’’ (14 mm) socket. Only use manual tools.
12. Apply torque seal on the nuts.
13. Place the battery switch and the master control switch to the ON position.
The vehicle may return to service.