7. Using a 1/2” combination wrench and 1/2” socket, remove the four locknuts (B) and four bolts (A) that secure the fifth
wheel assembly to the support plates (C, M) (Figure 8). Lower the assembly to the ground and remove the assembly
from underneath the base frame. Save the locknuts and bolts.
8. Using two 1/2” combination wrenches, remove the locknut and bolt (D) that secure the caster to the wheel arms (E)
(Figure 8). Remove and save the caster. Save the locknut and bolt.
9. Move the left support plate toward the brake/steer pedal (F) to disengage the swing arm and torsion lever assembly
from the support plates (Figure 8).
10. Using a 1/2” combination wrench, remove the locknut (G) that secures the spring hook to the bolt (Figure 8). Save the
locknut.
11. Using two 1/2” combination wrenches, remove the two locknuts (J), four shoulder spacers, and two bolts (H) that secure
the top part of the counter lever to both fifth wheel torsion levers (Figure 8). Save the locknuts, spacers, and bolts.
12. Using a 1/2” combination wrench and a 3/16” Allen wrench, remove the two locknuts (L) and two bolts (K) that secure
the torsion levers to both ends of the fifth wheel shaft (Figure 8). Save the locknuts and bolts.
N
No
otte
e -- Mark the positions of the torsion lever and the fifth wheel shaft relative to each other for reinstallation.
D
A
A
B
B
C
M
E
F
G
H
H
J
J
K
L
S
R
N
P
F
Fiig
gu
urre
e 8
8 –– F
Fiifftth
h w
wh
he
ee
ell a
arrm
m a
asssse
em
mb
bllyy rre
ep
plla
acce
em
me
en
ntt
13. Remove and discard the wheel arm assembly.
14. Install the fifth wheel on the new wheel arm assembly.
15. Reverse steps to reinstall.
16. Verify proper operation before you return the product to service.
C
Ca
asstte
err rre
ep
plla
acce
em
me
en
ntt,, ffiifftth
h w
wh
he
ee
ell
T
To
oo
ollss rre
eq
qu
uiirre
ed
d::
•
(2) 1/2” combination wrench
•
(2) Bungee cords (or equivalent)
P
Prro
occe
ed
du
urre
e::
1. Raise the litter and the rails to the highest position.
2. Apply the brakes.
3. Lift the base hood.
1900-009-002 Rev AA.6
17
EN
