Rear shock absorber to body M1025 Nm 18 ftlb

Shock Absorber Bushing Replacement

0013884

TRAILING ARMS, TORSION PLATES AND TORSION BARS

Replacement and/or removal of the trailing arm, torsion plate or torsion bar disturbs the rear wheel alignment settings. Replacement or adjustment of the torsion plate or torsion bar also affects vehicle ride height, which directly influences vehicle stability. If ride height is changed, it is strongly recommended that the vehicle balance/weight be checked at all four wheels using suitable wheel-load floor scales. See 440 Wheels, Tires, Alignment for more information.

Bolts For Torsion Bar Cover PlateBolts For Torsion Bar Cover Plate

1. Torsion bar

15. Wheel hub

33. Nut (M14)

2. Suspension subframe (torsion bar carrier)

16. Bolt (M10)

- tighten to 100 Nm (72 ft-lb)

3. Torsion bar cover

- tighten to 47 Nm (34 ft-lb)

34. Washer (M14)

4. Washer (M10)

17. Wheel bearing cover

35. Plate

5. Bolt (M10)

18. Washer (M10)

36. Bushing

- tighten to 47 Nm (34 ft-lb)

19. Wheel bearing

37. Trailing arm

6. Spacer

20. Stabilizer bar assembly

38. Bushing

7. Nut (M16)

21. Washer (M10)

39. Plate

- tighten to 245 Nm (177 ft-lb)

22. Nut (M12)

40. Bolt (M14)

8. Washer (M16)

-tighten to 120 Nm (87 ft-lb)

- tighten to 100 Nm (72 ft-lb)

9. Nut (M12)

23. Washer (M14)

41. Eccentric (M12)

- tighten to 85 Nm (61 ft-lb)

24. Shock absorber

- tighten to 85 Nm (61 ft-lb)

10. Nut (M12)

25. Washer (M14)

41a.Eccentric (M12)

- tighten to 120 Nm (87 ft-lb)

26 Bolt (M14)

- tighten to 85 Nm (61 ft-lb)

11. Lock washer (M12)

- tighten to 125 Nm (92 ft-lb)

42. Bolt (M12)

12. Flat washer (M12)

27. Nut

- tighten to 125 Nm (90 ft-lb)

13. Stub axle nut,

28. Washer

43. Eccentric (M16)

M20 castellated nut:

29. Clip

- tighten to 245 Nm (177 ft-lb)

- tighten to 300-320 Nm (217-231 ft-lb)

30. Clip

44. Bolt (M16)

M22 self-locking nut:

31. Bolt

- tighten to 245 Nm (177 ft-lb)

- tighten to 460 Nm (339 ft-lb)

32. Axle shaft

14. Washer

Rear trailing arm, removing and installing

— Apply parking brake and shift transmission into reverse.

— Remove wheel hub center cap. Loosen stub axle nut (32 mm socket wrench) through opening in center of wheel.

— Loosen rear wheel lug nuts.

— Release parking brake and shift car into neutral.

— Press brake pedal down about 1 in. and hold pedal in place with a pedal stop.

This will prevent brake fluid from dripping out of open brake lines while the work is being performed.

— Raise rear of car and support it securely.

1984 Pace Arrow Parking Brake

When working with hydraulic brake lines and hoses be sure to counterhold fitting before loosening or tightening.

• Make sure the car is stable and well supported at all times. Use a professional automotive lift or jack stands designed for the purpose. A floor jack is not adequate support.

• When working on torsion plates and torsion bars, the car should be no higher than 2 feet off the ground.

— Remove rear wheel. Remove stub axle nut.

^ Working at trailing arm, disconnect electrical connector (arrow) for brake pad wear sensor and remove harness from clip on trailing arm.

Disconnect brake line from brake caliper. Plug hydraulic lines.

— Remove brake caliper mounting bolts and remove caliper. See 470 Brakes-Hydraulic.

Rear Drive Shaft Disconnect

^ Unbolt CV joint fasteners (arrows) from transmission output flange.

• Lower axle shaft. Drive stub axle out of trailing arm.See Axle shaft, removing and installing, later in this section.

^ Remove brake rotor retaining screws (arrows) and pull off brake rotor.

^ Working at parking brake shoes pivot, remove cotter pin and castellated nut (arrow).

• Pull parking brake cable out of rear of trailing arm.

Pull Shock Absorber

10019047

Porsche Rear Hub

0019061

Transmission Stub Clip

^ Disconnect stabilizer bar link bolt (arrow) at trailing arm.

^ Drive out rear wheel hub using Porsche special tool P 297 a or equivalent drift.

^ Lower car close to ground level. Use floor jack under trailing arm to relieve suspension load on shock absorber. (Brake backing plate shown removed for clarity.)

• Remove rear shock absorber lower mounting bolt from trailing arm (arrow).

Porsche special tool P 289 a may be used to hold rear suspension in a compressed position while working on the rear shock absorber bolt.

Shock Absorber Mounting Bolts

0019064

Porsche 964 Rear Suspension Arm Overhaul

0019043

1984 Pace Arrow Parking Brake

0019048

0019021

Mark torsion plate position to trailing arm by scribing outline around torsion plate. Remove torsion plate fasteners (arrows) and detach trailing arm from torsion plate.

The torsion plate fastener holes are elongated. Mark relative positions of torsion plate, trailing arm and eccentric bolts (A) in order to reassemble suspension close to original alignment setting.

^ Working underneath car, remove trailing arm mounting bolt (arrow) from rear suspension subframe (torsion bar carrier). Remove trailing arm.

— Installation is reverse of removal.

• Bleed brakes as described in 470 Brakes-Hydraulic.

• Reset rear wheel alignment as described in 440 Wheels, Tires, Alignment.

Tightening torques

• Brake caliper to trailing arm (M12) 60 Nm (43 ft-lb)

• CV joint to transmission flange

• Rear shock absorber to trailing arm (M14) 125 Nm (92 ft-lb)

• Stabilizer link to trailing arm (M12) 85 Nm (61 ft-lb)

M20 castellated nut 300-320 Nm (217 - 231 ft-lb)

M22 self-locking nut 460 Nm (339 ft-lb)

• Trailing arm to suspension subframe

(torsion bar carrier)(M14) 100 Nm (72 ft-lb)

• Torsion plate to trailing arm (eccentric) . 85 Nm (61 ft-lb)

• Torsion plate to trailing arm (M12) 120 Nm (87 ft-lb)

Rear torsion bar, removing and installing

If torsion bars are replaced or reset, it is strongly recommended that the vehicle balance/weight be checked at all four wheels using suitable wheel-load floor scales. See 440 Wheels, Tires, Alignment for more information.

Loosen rear wheel lug nuts. Raise rear of car and support it securely.

• Make sure the car is stable and well supported at all times. Use a professional automotive lift or jack stands designed for the purpose. A floor jack is not adequate support.

* When working on torsion plates and torsion bars, the car should be no higher than 2 feet off the ground.

Remove rear wheel. Remove rocker panel.

• Remove rear rocker panel end cap screws and remove cap.

• Working from one end of rocker panel, peel off rubber rocker panel protector.

• Remove top and bottom mounting screws and remove rocker panel.

• Remove rocker panel torsion bar access plug from fender. On 1984-1986 cars, plug is retained to body from behind using nut and bar clamp.

Lower car close to ground level. Use floor jack under trailing arm to relieve suspension load on shock absorber. (Brake backing plate shown removed for clarity.)

• Remove rear shock absorber lower mounting bolt from trailing arm (arrow).

Porsche special tool P289 a maybe used to hold rear suspension in a compressed position while working on the rear shock absorber bolt.

— Lower and remove floor jack.

Mark torsion plate position to trailing arm by scribing outline around torsion plate. Remove torsion plate fasteners (arrows) and detach trailing arm from torsion plate.

The torsion plate fastener holes are elongated. Mark relative positions of torsion plate, trailing arm and eccentric bolts (A) in order to reassemble suspension close to original alignment setting.

Sway Trailing Arm Porsche 911

1. Rubber protector 5.

2. Torsion bar access plug 6.

3. Rocker panel mounting 7. screws

4. Rocker panel 8.

Rocker panel end cover Plastic spacer Rocker panel bottom mounting screw Jack hole cover

0019043

0019048

^ With car still close to ground and torsion plate supported from below using floor jack, raise torsion plate just until torsion plate comes off lower stop (arrow) on torsion bar cover.

0019050

Bolts For Torsion Bar Cover Plate

Loosen 3 torsion bar cover bolts (A) and remove stop bolt and sleeve (B).

— Slowly lower floor jack to relieve torsion bar tension on torsion plate.

^ Raise vehicle on lift. Using spirit level in special protractor tool 261/1 or equivalent, measure inclination of vehicle body at door sill (measurement A).

Protractor Bolt

0019050

Porsche Plastic Body Screws

0019053

Example

Measured torsion plate inclination (B) Actual torsion plate inclination 32°

When backing off the torsion plate, check that the plate does not hang up on the body mounting boss.

— Remove torsion bar cover mounting bolts and remove torsion bar cover by prying gently off body.

Measure inclination of torsion plate (measurement B).

— Combine measurements A and B (add or subtract body inclination measurement) to find value of torsion plate inclination in relation to vehicle body. Record measurement.

• Do not interchange rear torsion bars. Bars are marked on the ends "R" and "L" for right and left.

• If a torsion bar is broken on a car built before 1987, the broken part that is stuck in the subframe (torsion bar carrier) can be driven out from the opposite side after removing the other torsion bar.

• If the car was built in 1987 or later, the transmission must be removed before the broken torsion bar can be driven out of the subframe tube. Replug the hole that has been provided for this purpose after the job is completed.

— Prior to installation, carefully clean and check all parts for signs of damage. Replace as needed.

• Check torsion plate for corrosion, chipped paint, scrapes.

• Check torsion bar for cracks.

— Coat torsion bar with multipurpose grease and install.

Replace Capri Inner Sill End

The inner and outer ends of rear torsion bars have a different number of teeth. Be sure to install the bar with the "L" or the "R" on the end facing out.

— Coat rubber seals on torsion bar cover with a rubber lubricant such as Contifix® or Capella®.

Temporarily install 3 bolts (arrows) without spacers to hold cover in place. Leave out lower stop bolt.

1985 911 Torsion Bars

0019053

Using special protractor tool 261/1 or equivalent, measure inclination of vehicle body at door sill (measurement A).

0019053

Measure inclination of torsion plate (measurement B).

Table a. Rear Torsion Bar Specifications

Model

Torsion bar diameter

Torsion bar splines inside/ outside

Torsion plate inclination (see text)

1984-1985:

Carrera with gas struts Carrera w/out gas struts Turbo look

24.1 mm 24.1 mm 26 mm

40/44 40/44 40/44

34" 35° 36°

1986:

26 mm

40/44 40/44

26 mm

46/47 46/47

32° 34°

— Combine measurements A and B (add or subtract body inclination measurement) to find value of torsion plate inclination in relation to vehicle body inclination.

Table a. Rear Torsion Bar Specifications

Example

Body inclination (A)

-2°

Measured torsion plate inclination (B)

34°

Actual torsion plate inclination

32°

— If torsion plate inclination is incorrect:

• Remove torsion bar cover fasteners and slide cover with torsion plate off body.

• Reposition torsion bar in torsion plate and reinstall cover using 3 fasteners.

• Recheck inclination and readjust as necessary.

It may be necessary to try several different positions for inner and outer teeth on the torsion bar to achieve the correct setting.

Bolts For Torsion Bar Cover Plate

^ Once torsion bar inclination is correct, use floor jack to raise torsion plate just enough to install lower stop bolt with spacer (arrow).

• Tighten all four torsion bar cover mounting bolts.

Tightening Torque

• Torsion bar cover to body (M10) 47 Nm (34 ft-lb)

— Remainder of installation is reverse of removal.

• Reset rear wheel alignment and check ride height as described in 440 Wheels, Tires, Alignment.

Replacement and/or removal of the torsion plate or torsion bar disturbs the rear wheel alignment settings and also affects vehicle ride height, which directly influences vehicle stability. If ride height is changed, it is strongly recommended that the vehicle balance/weight be checked at all four wheels using suitable wheel-load floor scales. See 440 Wheels, Tires, Alignment for more information.

Tightening torques

• Rear shock to trailing arm (M14) 125 Nm (92 ft-lb)

• Torsion plate to trailing arm (eccentric) . 85 Nm (61 ft-lb)

• Torsion plate to trailing arm (M12 bolt). 120 Nm (87 ft-lb)

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