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Suffolk C-type - Rear Suspension and Final Drive Installation

Suffolk C-type
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12. The top ½” UNF x 3” bolts locate into the cross brace bars (003). The rear bar may need a couple of
washers/shims to fit the gap and is best left out until the engine is fitted, whilst the front bar can be
fitted but in co-ordination with the front frame.
13. Locate the front frame with the brackets on the inside of the main chassis and pass the upper
wishbone mount bolts through the front frame mounts and then into the cross brace. Secure the
lower end of front frame with 5/16” UNF bolts and nuts supplied.
14. Lightly lubricate the upper wishbone poly bushes (010) and assemble in upper wishbones (009).
Hand pressure should be sufficient; then push in the metal sleeves.
15. Copper grease the pins of the upper wishbone inner mount and slide on the wishbones. Both
wishbones crank in towards each other. The more cranked wishbone is the rear item. Hold on with
large plain washers and half Nylocs but don’t tighten yet.
16. Between the outer ends of the top wishbones you can now mount the upper ball joint (012) using the
3/8” UNF x 3 ” supplied. Install three shims behind each ball joint, which can be changed later to
adjust castor angle. With the ball joint tight you can also tighten the inner mount Nylocs.
17. Next take the lower ball joints (008) and pass them through the lower end of the front uprights (013).
Secure with the 5/16” UNF and lock washers supplied. Before fitting the upright on the car remove
any paint from the inner surface of the front threaded lobes where the brake calliper locates. If your
upright has two different spaced arms (vertical distance between front and rear arms) the larger
spaced pair go towards the front of the car and are for the brake calliper, fit the upright to the upper
and lower ball joints and torque to 50 and 55 ft lbs respectively. With the upright fitted you can now
fit the stub axle (013) and steering control arm (024), the stub axle passes through the upright and the
inner end of the steering control arm and secures with the large nut supplied (torqued to 85 ft lb), the
steering arm needs to point to rear of car and mounts on the upper of the two bolt holes with the
steering arm finishing horizontal for the track rod end.
18. Take the front hubs (014) and mount on the front brake discs (019) with the 7/16” UNF x 1 ½
supplied. Pass the bolts through the back of the brake disc then through the hub followed by plain
washers and metal lock nuts.
19. Keeping the front wheel bearings (015) as matched units press the outer race of each into the hub.
Thoroughly grease the inner race of each making sure you rotate them to work the grease in before
installing in the hub then press in the rear grease seal.
20. Now locate this on the stub axle of the front upright and fit the flat D washer and castle nut, tighten
the hub nut whilst turning the hub at the same time until its rotation is felt to be slightly restricted.
Now back off the castle nut between one and two flats and insert split pin to secure using the hole in
the side of hub to help.
21. Clean the protective grease off the brake disc before fitting on the brake calliper (018) to the front of
the assembled hub carrier using the supplied cross drilled 7/16” UNF bolts. Use an extra washer as a
spacing shim if necessary to centralise the calliper over the disc then lock wire the bolts together.
22. Lightly copper-grease the rear non-friction side of the brake pad to help avoid brake squeal before
inserting into the brake calliper and securing with pins (copper greased to aid sliding) and “R” clips.
23. Take the anti-roll bar (020) with its “D” brackets and poly bushes, lubricate the poly bushes and slide
them over the middle section of the roll bar (they are split bushes to help this). Mount centrally to
the underside of the chassis with the “D” brackets and 3/8” UNF bolts, washers and Nylocs.
24. The drop links (021) link the ends of this bar to the last spare hole in the lower front wishbones.
4.4 Rear suspension and final drive
Parts required 028-038
1. Next turn to the rear end and assemble the rear radius arms (034). The larger hole and bush is the
front chassis mount end and the three holes mid way along are along the top; they are not handed.
Take the front plate with the welded sleeve and keeping the weld to the outside of the car push it
through the radius arm. Then fit the other plate on the inside and secure together with 5/16”UNF
bolts with washers and Nylocs on the outside.
2. Next, install the rear bush carrier with its welded sleeve keeping the weld innermost and secure with
5/16” UNF and lock washers (the holes may need threads taping to 5/16 UNF). Now lightly lubricate

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