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Repair Help and Education
Posts by repair@parktool.com
Dura-Ace 7800 Rear Hub Service
This article will discuss the service of the Shimano Dura-Ace 7800 rear hub.
Wheel Dishing (Centering)
This article will discuss the use of the WAG-4 Wheel Dishing Gauge and the WAG-5 Wheel Dishing Gauge.
Freewheel- destructive removal
This article will discuss removing freewheels that have no removal tool option. This will be useful if the wheel is to be re-used, but it will effectively destroy the freewheel.
Chainring Spider Removal
This article will discuss the use of the BBT-18 (or older BBT-8) to remove some crankset spider lockrings.
Chain Cleaning using the CM-5 Cyclone Chain Scrubber
This article will discuss the use the CM-5 Cyclone® Chain Scrubber. The concepts will also apply to other chain cleaners.
Digital Caliper Use
This article will discuss the use of the Park Tool Digital Caliper DC-1.
Bottom Bracket Tool Selection
This article will discuss tool selection for servicing bottom brackets. Many bottom brackets require special tools for installation and removal. A table summarizing tool section is at end of this article.
Freehub Service
This article will discuss the service of freehubs. Shimano, American Classic, Campagnolo, and Bontrager freehub removal will be reviewed
Tight Link Repair
This article will discuss loosening a tight link on a derailleur chain.
Front Derailleur Adjustments
This article will discuss the basic adjustment of the front derailleur. This article assumes the derailleur is compatible with the shifting system and is not extremely worn out.
Coaster Hub Overhaul (Pedal Brake Hub)
This article with discuss the basic bearing service of coaster-brake hubs. This is also referred to as a "back pedaling brake."
Internal Hub Transmissions
This article will discuss the adjustment of internal geared hubs. These include SRAM® Dual Drive hubs, and Shimano® 3-speed hubs. Consult the manufacturer for further information. Internal overhaul and service is not covered.
SRAM®
The SRAM® system uses a derailleur and a cass...
Sidepull Brake Service
Properly adjusted brake systems require attention to small details. This article will discuss sidepull caliper arm adjustment, pad adjustment to the rim, pad centering, and pad clearance.
Bike Washing and Cleaning
This article will discuss bicycle washing. Cleaning the bicycle makes it look great, last longer, and improves performance.
BMX Three Piece Crank Service
This article will discuss the installation and service of the BMX three piece crankset using the 48 spindle spindle. These models of cranksets use cartridge bearing cups, a spindle with 48 small splines, a chainring and two arms.
Bar End Shifter Service
This article will discuss bar end shifters. These are derailleur shift levers mounted to the ends of time trial or triathlon handlebars. They are also found on drop style handlebars.
Di2 Shimano Electronic Intelligent System Installation
This article will discuss the installation and adjustment of the Di2 Shimano Electronic Intelligent System®. This system is incorporated in the designs of some new bike models. This article will focus on the installation of the system as an after-market component system.
100-4X, 100-15X & 100-6X, and PRS-15 Service
This article will discuss the service of the 100-4X and 100-15X Extreme Range Clamps.
1951-15 adapter stud
The #1951-15 is a threaded stud that will allow the 100-25D to fit the PRS-15 repair stand. NOTE: The clamp will not fold downward as the original 100-15X clamp design.
The #1951-15 adapter stud works only is the PRS-15 has the three-pointed knob behind the clamp, as seen on the top ...
BB30 Bearing System Service
This article will discuss the removal and installation of the BB30 cartridge bottom bracket bearings.
Housing Length
This article will discuss the cutting and sizing of both brake and derailleur housing.
Chain tension for Tandem Front End
This article will discuss sizing the captain-to-stoker chain for tandems, called the "primary" chain.
TCC: Tension Conversion Calculator for TM-1
This page is a re-introduction of the Tension Conversion Calculator (TCC), a spreadsheet tool for assistance in wheel truing. To appreciate the TCC, you should first become familiar with the TM-1.
BMX-Freestyle Detangler Adjustment
This article will discuss the "detangler" headset and brake system.
