Witter FT74AU Fitting Instructions

MATERIALS:

A 1 Cross Bar
B 1 Side Bracket
C 1 Side Bracket
D 2 Spacer
E 2 Witter Cage Nut Carrier
F 4 M10 x 35 x 1.5p Bolts, Lock Washers, Witter Cage Nuts and Retainers
G 4 M12 x 30 x 1.75p Bolts, Lock Washers and Nuts
H 2 M8 x 35 x 1.25p Bolts, Lock Washers, Nuts and Plain Washers (25mm O.D.)
ZE 1 Retractable Electrical Plate
ZX 1 Chosen Neck Kit (Detachable shown for illustration purposes only)
Note: This tow bar must be used with either a Witter neck kit or Class A50-1 or A50-X tow ball, which
dimensionally conforms to A50-1 with a 'D' and 'S' value greater than or equal to that of the tow bar.

FITTING:

1. Remove each rear light cluster (2 screws on side of moulding then pull rearwards).
2. Remove the bumper (1 Torx screw exposed by removal of light clusters, 2 screws on bottom
edge, 2 wheel arch screws and 1 Torx tip screw in each wheel arch).
3. Remove the inner steel bumper beam (3 nuts each end).
4. Detach exhaust silencer from its mounting rubbers to gain access to underside of chassis rail.
5. Pre-assemble the Witter Cage Nuts (F) to the Cage Nut Retainers (E) using Cage Nut Fitting
Instructions (Take note of the orientation of Cage Nut Retainers (E)).
6. Carefully insert the Cage Nut Retainers (E) into each chassis rail and position above the
square hole in the bottom face of the chassis (Note the orientation to the corners of each
square hole).
7. Assemble each Side Bracket (B & C) to underside of each chassis rail using fasteners (F)
through the chassis' square holes (Note the orientation of each Bolt to the corners of each
square hole).
8. Assemble cross-tube to vehicle rear panel, locating over the lower bumper beam stud at each
end. Loosely secure to Side Brackets (B & C) using fasteners (G).
9. Re-fit the steel bumper beam, with Spacers (D) between the beam ends and vehicle rear
panel on outer stud mountings, and secure with original Nuts (X).
10. Complete the fitting of the steel bumper beam using fasteners (H) through the two remaining
upper mounting holes. (Use a plain washer under each nut and one under head of each M8
Bolt.)
11. Assemble the chosen Neck Kit (ZX) and Retractable Electrical Plate (ZE) to Cross Bar (A)
using fasteners provided.
12. Fully tighten all fasteners to recommended torque settings.
Recommended torque settings:
Grade 8.8 bolts:
Grade 10.9:
Fitting
Instructions
M8 - 24Nm, M10 - 52 Nm, M12 - 80 Nm, M14 - 130 Nm, M16 - 200 Nm
M12 – 120Nm, M10 – 70Nm M8- 35Nm
W 0 0 0 1 F T 7 4 A U - F IT $ 0 1 1 7 0 4 1 2 0 0 0 0
#NAME?
TOWBAR
For Fiat 500
FT74AU
& 500S (2008-)