Marzocchi Z3 QR20 - User Manual

Z3
QR20
(110)
TRAVEL 110
+0.5
0
175
18
426 55
L.MAX=491 L.L.=481 L.MIN=371
248.5
80
26.5
130
110
Ø30
±2
±2
15
20
0
-0.1
+1
0
Ø30
+0.05
0
GENERAL
• The fork is sprung by a mechanical coil system and uses hydraulic
rebound damping.
• Spring pre-load adjustment controlled via external top mount
adjuster, rebound damping adjustment controlled by bottom
adjuster of right fork leg.
• Stanchions fitted into lower Crown by cryofit technique. Full length
bushings guarantee superior rigidity.
• Sliders and arch are an integral assembly for reduced weight and
improved rigidity.
• Parts subjected to friction are cooled and lubricated by a specially
formulated oil.
• QR20 wheel shaft retaining system for special hubs (110-mm stop)
and wheel shafts with 20-mm diameter.
Steer tube: stainless steel or, on request, EASTON aluminum steer
tube available for 1 1/8” diameter, threadless.
Crown: Forged and CNC-machined BAM
❊
aluminum alloy.
Arch: Cast magnesium alloy.
Stanchions: anodized EASTON aluminum with variable butting.
Springs: Constant pitch springs.
Sliders: Forged and CNC-machined BAM
❊
aluminum alloy. Left
slider comes with supports for disc brake caliper.
Slider bushing: Full length guide bushings composed of a copper
base and impregnated with an anti-friction coating.
Seals: Computer designed oil seals guarantee the highest quality
seals available.
Oil: Specially formulated oil which eliminates foaming and viscosity
breakdown while providing complete stiction-free performance.
Fork leg oil: 85 cc (each leg), type EBH 16 - SAE 7.5.
❊
BAM: Bomber Aerospace Material.
Special alloy developed from aerospace material.

Summary

Instructions

General Rules

General guidelines for handling and maintaining the suspension system.

Failures, Causes and Remedies

Recommendations for Maintenance

Installation

Front Wheel Assembly

Instructions for properly attaching the front wheel to the fork sliders.

Disc Brake System Assembly

Guidelines for installing disc brake systems, including warnings and torque specs.

Adjustment

Spring Preload

How to adjust spring preload for compression damping and rider preference.

Rebound Adjustment

Guide to adjusting rebound damping using the bottom adjuster screw.

Disassembly

Spring Change

Steps to remove and replace the fork springs.

Pilot Bushing and Seal Assembly Change

Procedure for replacing pilot bushings and seals.

Replacing Pumping Element Seals

Detailed steps for replacing seals within the pumping element.

Valve Assembly Change

Instructions on how to check and change the valve assembly.

Reassembly

Pilot Bushing and Seal Assembly

Steps for correctly installing pilot bushings and seals during reassembly.

Pumping Rod Assembly

Guide for assembling the pumping rod, including O-rings and threaded ends.

Valve and Pumping Rod Assembly

Reassembly of valve and pumping rod components with springs and seals.

Crown and Stanchions Assembly

Instructions for fitting the crown and stanchions assembly with dust seals.

How to Fill with Oil

Procedure for filling the fork legs with the correct amount of oil.

Spring and Cap

Steps to fit springs and tighten the top caps with preload adjuster.

Specific Marzocchi Tools

Marzocchi Z3 QR20 Specifications

General

Brand	Marzocchi
Model	Z3 QR20
Category	Bicycle Accessories
Language	English