Giant AC Manuale utente

Owners Manual

July 2003.

ALL CONDITIONS MOUNTAIN BIKE

•Multi purpose, extreme Freeride mountain bike

•4 bar linkage rear suspension

•Frame compatible for chain tension device, bash ring, 2.5” tires

•Disc brake compatible

•Manitou Swinger SPV Coil over rear shock unit (included)

•Chain guard, chain tension device (included)

•Optimized saddle height adjustment

•Sealed bearings on all pivots

•2 rear shock positions

•Rear wheel travel: 5.3 ~ 6.6 inches (approx. 135 ~ 165 mm).

Pag. -2-

Contents.

1. Introduction..............................................................................3

2. Sizing.......................................................................................4

3. Exploded view..........................................................................5

4. Rear suspension......................................................................7

4-1 Adjusting travel. ...............................................................7

4-2 Coil over shock. ...............................................................8

4-3 Changing the coil spring. .................................................9

4-4 Removing the rear shock assembly or pivots..................9

5. Chain tension device. ............................................................10

5-1 Assembly........................................................................11

6. Tightening torque...................................................................12

7. Cleaning and maintenance....................................................13

Pag. -3-

1. Introduction.

Giant’s products are designed to provide years of recreation and enjoyment. The GIANT AC have

been designed primarily as “All Conditions” Freeride bikes.

However, in order to fully understand all the bicycle features, you must read this bicycle manual, the

suspension fork and rear shock manuals provided by Giant and parts suppliers. If you do not

understand any information in the manuals or if you misplace any of them, please contact your

authorised Giant dealer immediately.

Please take the time to read and understand this material to help limit the possibility of serious injury.

ALWAYS read and follow all instructions in this manual.

It is very important that your dealer carries out any repair or maintenance, which is not described in

this manual.

Pag. -4-

2. Sizing.

The actual frame measurements and geometries are listed below.

Size S - 17” M - 18” L - 19”

A. Top tube [mm.] (measured horizontally) 565 585 605

B. Seat tube [mm.] 430 455 480

C. Effective seat tube angle (*1) 71.6 degrees

D. Head tube angle 69 degrees

E. B.B. drop [mm.] -14.8

F. Chain stays [mm.] 430

Center B.B. axle - center front wheel [mm.] 631 652 673

G. Fork rake [mm.] 43

H. Trail [mm.] 88

I. Wheel base [mm.] 1060 1080 1100

Front wheel travel (AC bikes) 90~130 mm.

Rear wheel travel 5.3~6.6” or 135~165 mm.

(*1) Effective seat tube angle:

Angle of centerline bottom bracket - saddle

(top of saddle 20cm above top seat tube, measured along the seatpost).

Figure 1.

Pag. -5-

3. Exploded view.

Figure 2.

Pag. -6-

NR. DESCRIPTION REMARKS Q’TY PER BIKE

1 Front triangle 1

2 Seat stays 1

3 Chain stays 1

4 Lower shock mount Set 1

4-1 Fixing bolt M6x1x40mm. 1 pc. per set

4-2 Washer 13.5x6.4x1.2mm. 2 pcs per set,

same as 8-2.

4-3 Nut M6 1 pc. per set

5 Fixing bolt upper shock mount M8x1.25x65mm. 1

6 Pivot parts set Seat tube - linkage plates 2

6-1 Bolt M10x1 1 pc. per set

6-2 Bearing 1 pc. per set

7 Pivot parts set Seat stays - linkage plates 2

7-1 Washer 14x10x3mm. 1 pc. per set,

same as 9-3.

7-2 Bearing 1 pc. per set,

same as 9-2.

7-3 Fixing bolt 10x27/29mm. 1 pc. per set

8 Pivot parts set Chain stays - bottom

bracket

8-1 Fixing bolt M6x1x14mm. 1 pc. per set

8-2 Washer 13.5x6.4x1.2mm. 1 pc. per set,

same as 4-2

8-3 Bearing 2 pcs per set

8-4 Washer 18x10.1x3.5mm. 2 pcs per set

8-5 Nut 67mm. alu. 1 pc. per set

9 Pivot parts set Seat stays - dropouts 2

9-1 Fixing bolt 10x20.5/22.5mm. 1 pc. per set

9-2 Bearing 1 pc. per set,

same as 7-2.

9-3 Washer 14x10x3mm. 1 pc. per set,

same as 7-1.

10 Linkage plates Set L and R 1

11 Rear shock Incl. hardware 1

12 Chain guard CG01 1

13 Bolt M4 for linkage plate bearing 2

14 Replaceable dropout Incl. bolt and nut 1

Pag. -7-

4. Rear suspension.

The rear suspension for your Giant AC bicycle / frame kit is provided by a Manitou Swinger SPV

3-way adjustable coil spring shock.

For a description of the coil spring shock, see http://www.answerproducts.com or the Manitou

owner’s manual that comes with your bike or frame kit.

WARNING:

Improper adjustment of rear suspension shock can result in unstable conditions or loss of

control.

4-1 Adjusting travel.

Your Giant AC bicycle gives you the ability to change the rear wheel travel with minimal effort. This

is accomplished by multiple positions for the upper shock pivot bolt (see figure 3 below).

To change the travel:

1. Using a 6 mm. Allen-key, remove the upper shock mounting bolt.

2. Pivot the shock backward or forward to align the eyelet with one of the holes.

- The most forward position is for 5.3” travel.

- The position closest to the seat tube is for 6.6” travel.

3. The threads of fixing bolt should be cleaned and re-set using LoctiteTM Primer (#7649) and

LoctiteTM blue Removable Threadlock (#242) or similar material.

Install the bolt and tighten to the proper torque of 10-12 Nm.

4. After any adjustment is made to travel, you will need to readjust all spring pre-load settings

described in the following sections.

WARNING:

Improper (dis-)assembly may result in damage to the bicycle or in an accident which can

cause serious injury or death.

Pag. -8-

4-2 Coil over shock.

Below is a chart showing the standard spring rates for different frame sizes.

Giant frame size Manitou Swinger SPV

spring rate

17” 400 lbs./in.

18” 450 lbs./in.

19” 500 lbs./in.

Softer and stiffer spring rates are available for these rear suspension shocks either through your

authorised Giant dealer or directly from the manufacturer (Manitou).

If you need to change your spring, contact your local authorised Giant dealer or the Giant importer

in your country.

The rear shocks are serviceable and must be returned for maintenance, repair or service, only to an

authorised Manitou dealer (or the Manitou distributor in your country) once a year or more often if

the bike is used in extreme conditions.

This service is not necessarily free of charge!

WARNING:

All service and maintenance of the rear shocks should only be performed with proper tools

by an authorised Manitou dealer or by the Manitou distributor in your country.

Figure 3.

Pag. -9-

4-3 Changing the coil spring.

WARNING: Do not try to disassemble or to replace the rear shock coil spring by yourself!

Improper (dis)assembly may result in damage to the bicycle or in an accident which can cause

serious injury or death. Only an authorised Giant dealer should replace the coil spring.

4-4 Removing the rear shock assembly or pivots.

It is necessary to periodically check the rear shock unit and the suspensions’ pivot points for

damage or wear. The rear shock unit should be returned to an authorised Manitou dealer or to the

Manitou distributor in your country to inspect and repair.

(Note: this is not covered under the terms of the warranty).

WARNING:

Do not try to disassemble or to replace the rear shock or a pivot by yourself !

Improper (dis-)assembly may result in damage to the bicycle or in an accident which can

cause serious injury or death. Only an authorised Giant dealer should disassemble the rear

shock or pivots.

Pag. -10-

5. Chain tension device.

Nr. Description Qty. Nr.

Description Qty.

1 Body, aluminium 1 6 Bolt M6x16mm. with flat washer 2

2 Roller (pulley) 2 7 Nut M6 with nylon ring 3

3 Bolt M6x8mm. with washer

2 8 Taper bolt M6x17.5mm. 3

4 Roller bearing 6x19mm. 2 9 Roller bearing 7x22mm. 2

5 Washer 13x6.4x1.2mm. 2 10 Shaft, steel 2

Figure

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