Caution: On certain Punto models, it may be necessary to fit additional strengthening braces (supplied as a kit by Fiat dealers) to the rear chassis members before installation of the towbar. Consult a Fiat dealer far further information and, where applicable, ensure that the strengthening braces are fitted in accordance with the manufacturer's instructions before proceeding with the towbar installation.

General information

1 Although the following information specifically depicts the fitting of a Witter towbar, the procedures can be used as a general guide for other towbar types.
2 Prior to starting, read through the entire procedure to familiarise yourself with the work involved and ensure that all necessary tools and equipment are available.
3 On completion of the installation, refer for Fiat Punto towbar electrical socket installation and wiring connection details.
4 Refer to Dimensions and weights for maximum towing weights and trailer nose weight which must be strictly observed.

Materials

5 Unpack the towbar and check that all the following parts are contained in the kit (see illustration).



Towbar component and attachment details (see text for item description)


The illustration shows the component arrangement when a fixed towball is being used. If the optional detachable towball is to be used, items 5, 6, 7, 8 and 12 will not be required. The installation procedures cover both towball types.
1) Cross-bar.
2) Left-hand sidearm.
3) Right-hand sidearm. A) Captive straps (2).
5) Neck - for use with fixed towball.
6) Spacing bushes (2) - for use with fixed towball.
7) M12x90x1.75 mm bolts (2)-for use with fixed towball.
8) Disc spring washers (2) - for use with fixed towball.
9) M8x40x1.25 mm bolts (2), nuts (2), lockwashers (4) and flat washers (4).
10) M12x35x1.75 mm bolts (4), nuts (2), lockwashers (4) and flat washers (2).
11) M10x30x1.5 mm bolts (2), nuts (2), lockwashers (2) and flat washers (4).
12) M16x50x2.0 mm bolts (2), nuts (2) and lockwashers (2) - far use with fixed towball.

Towbar of Fiat Punto installation

6 Chock the front wheels then jack up the rear of the car and securely support it on axle
stands. Remove the rear roadwheels.
7 Undo the screws securing the rear bumper lower mountings to the brackets on the vehicle underbody (see illustration).



Undo the screws securing the rear bumper lower mountings to the brackets on the underbody


8 Release the exhaust rear silencer from the rubber mounting, then undo the retaining bolt and remove the rubber mounting support bracket from the chassis side rail.
9 Undo the remaining bolts and remove the exhaust system rear heat shield.
10 Prise out the plastic blanking plugs from the holes in the chassis side rails at position 9.
11 Working on the left-hand side, make a mark on the chassis side rail 35.0 mm forward (towards the front of the car) from the centre of the forward-most mounting hole at position 9 (see illustration).



 Mark the chassis side rail 35.0 mm forward from the centre of the forward-most mounting hole


12 Drill a pilot hole at the position marked, then enlarge the hole using a conical hole cutter until it is possible to insert the captive strap (4). Feed the strap through the hole and into the chassis side rail, allowing the mounting stud to protrude through the rearmost existing hole (see illustrations).



Drill a pilot hole at the position marked, then enlarge the hole using a conical hole cutter ...



... until it is possible to insert the captive strap



... Feed the strap through the chassis side rail, allowing the mounting stud to protrude through the existing hole


13 With the captive strap in place, locate the left-hand sidearm (2) in position, followed by the previously removed exhaust heat shield and exhaust mounting support bracket (see illustrations).



Locate the left-hand sidearm in position...



... followed by the previously removed exhaust heat shield of Fiat Punto ...



... and exhaust mounting support bracket


Secure the assembly with the bolt, nut, flat washers and lockwashers (9), tightened finger tight only at this stage.
14 Repeat paragraphs 11 and 12 on the right-hand side of the car, then place the remaining captive strap (4) in position. Fit the right-hand sidearm (3) and secure the sidearm with the bolt, nut, flat washers and lockwashers (9), tightened finger tight only at this stage.
15 Engage the cross-bar (1) with the two sidearms, and loosely attach the two upper mountings with the bolts, nuts, flat washers and lockwashers (11) (see illustrations).



Engage the cross-bar with the two sidearms...



... and attach the upper mountings (arrowed) with the bolts, nuts, flat washers and lockwashers


Note that on 3-door models it will be necessary to cut off the left-hand inner mounting flange from the bumper to provide clearance for the Fiat Punto towbar electrical socket mounting plate on the cross-bar.
16 Loosely attach the cross-bar (1) to the rearmost holes in the left-hand and right-hand sidearms (2 and 3), using the bolts and lockwashers (10) (see illustration).



Attach the cross-bar to the rearmost holes in the sidearms using the bolts and lockwashers


17 If the standard fixed towball arrangement is to be used, locate the two spacing bushes (6) between the mounting flanges in the cross-bar (1) (see illustration).



If the fixed towball is to be used, locate the two spacing bushes between the mounting flanges in the cross-bar



Attach the towball neck to the cross-bar and secure with the bolts and disc spring washers


Attach the towball neck (5) to the cross-bar and secure with the bolts (7) and disc spring washers (8) (see illustration). Tighten the bolts to the torque setting.
18 If the optional detachable towball is being fitted, position the towball receptor unit between the mounting flanges in the crossbar (1). Insert the two bolts supplied with the kit through the mounting holes, place the safety chain plate in position and secure the assembly with the two Nyloo nuts (see illustrations).



If the detachable towball is being fitted, position the receptor unit in the cross-bar, fit the bolts and safety chain plate ...



... then secure the assembly with the two Nyloo nuts


19 Using the forward-most mounting bolt holes in the cross-bar (1) as a guide, drill a 12.5 mm diameter hole through the Fiat Punto bumper mounting bracket on each side (see illustration). Fit the remaining mounting bolts (10), with a fiat washer under the bolt head and secure with the nuts and lockwashers moderately tightened (see illustration).



Drill a 12.5 mm diameter hole through the bumper mounting brackets each side ...



... fit the mounting bolts with a flat washer under the bolt head and secure with the nuts and lockwashers


20 Check the fit and alignment of the towbar components, then tighten all mountings and attachments to the torque settings.
21 On completion, re-attach the exhaust rear silencer to the rubber mounting and refit the bumper lower mounting screws. Refit the roadwheels and lower the car to the ground.

Towball attachment of Fiat Punto

Fixed towball type

Note: To avoid obscuring the number plate the towball should be removed when not in use.
22 Position the towball on the towball neck flange and insert the two retaining bolts (12) Fit the lockwashers and retaining nuts and tighten the nuts to the torque settings.



Secure the fixed towball to the towbar neck flange with the two bolts nuts and lockwashers


Detachable towball type

23 Insert the locking handle into the towball receptor unit with the cut-out portion of the pivot facing upwards (see illustration).



To fit the detachable towball, insert the locking handle (2) into the receptor unit (1) with the pivot cut-out portion upwards


24 Hold the locking handle as described and insert the towball neck into the receptor unit with the towball facing downwards (see illustration).



Hold the locking handle and insert the towball neck (3) into the receptor unit with the towball facing downwards


25 Rotate the towball neck anti-clockwise through 180°, than pivot the locking handle upwards until the spring-loaded catch engages with the peg on the Fiat Punto towball neck (see illustrations).



Rotate the towball neck anti-clockwise through 180°



... then pivot the locking handle upwards until the catch engages with the towball neck peg


26 Removal of the towball neck and handle is a reverse of the attachment procedure. After removal, store the components in the bag provided and cover the aperture in the receptor unit with the weather cover.