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Repair Help and Education

Posts by calvin@parktool.com

Bottom Bracket Standards

There are now several different crank bearing systems and standards. The different standards do not allow interchangeability between bearings or cranksets. Having some knowledge of the standard will help the mechanic be aware of service options. Threaded Bottom Bracket Shells Threaded ...

PF30 Bottom Bracket Service

The PF30 system uses an unthreaded frame shell with an inside diameter of nominally 46mm. The inside of the shell is a straight bore, without the stops or clips of the BB30 standard. The shell widths are 68mm for road bikes and 73mm for mountain bikes. PF30 frame shell The c...

CBP-5 Crank and Bearing Adaptor Set for Service of Campagnolo Power Torque Cranks

This article will review the service of the Campagnolo® Power-Torque™ crank system.

TS-2.2-and-TS-2-Centering

This article will discuss the centering procedures for the TS-2.2 and the TS-2 truing stand. The same procedures and concepts apply to both stands. The TS-2 truing stand is adjusted at the factory to center the rim between the calipers. With use, the TS-2 can come out of center. For precis...

Post Mount Disc Brake Facing with DT-4

Use of the DT-4 Disc Mount Post Facing Tool

PFP-6 and PFP-3 Service

This article will discuss the service of the PFP-6 Home Mechanic Floor Pumpand the PFP-3 (discontiued) Floor Pump. Pump Head- #1081 The pump head (part #1081) uses two gaskets that may be replaced or simply reversed. It is first necessary to disassemble the pump alloy head assembly . Each gaske...

PFP-4 and PFP-2 Service

This article will discuss the following services of the PFP-4 Professional Floor Pump: Gauge Replacement- #1064 1. Unthread and remove blue ring counter-clockwise. 2. Plug hose end with thumb, and work handle up and down to build pressure. Pressure will build and pop gauge upw...

Home Mechanic Tool List — Essentials

Home Mechanic Tool Lists Maintaining your own bike can be fun, but it can also be confusing at times to know which tools you will need to perform the service you want. Below are a series of recommended tool lists for general maintenance of the average road or off-road bike. Attempt to deve...

Home Mechanic Tool List — Intermediate

Maintaining your own bike can be fun, but it can also be confusing at times to know which tools you will need to perform the service you want. Below are a series of recommended tool lists for general maintenance of the average road or off-road bike. Attempt to develop two sets of tools: one fo...

Home Mechanic Tool List — Novice

Maintaining your own bike can be fun, but it can also be confusing at times to know which tools you will need to perform the service you want. Below are a series of recommended tool lists for general maintenance of the average road or off-road bike. Attempt to develop two sets of tools: one fo...

PFP-5 Service

PFP-5 Floor Pump Service This article will discuss the service of the PFP-5 Home Mechanic Floor Pump. See a parts diagram here. Pump Head With repeated use, the gaskets of any pump will begin to wear. The PFP-5 pump head uses two gaskets that may be reversed to gain more service. T...

Home Mechanic Tool List-Advanced

Maintaining your own bike can be fun, but it can also be confusing at times to know which tools you will need to perform the service you want. Below are a series of recommended tool lists for general maintenance of the average road or off-road bike. Attempt to develop two sets of tools: one fo...

Travel Agent Installation and Adjustment

Installation and adjustment of the Travel Agent™ brake cable system

Wheel Tension Balance Web App

Wheel truing can be great fun. It provides us chance to focus on something that should be simple, something that bends to our will, so to speak. Get a cup of good coffee, sit yourself in front of a truing stand, and meditate on making a perfect wheel (figure 1). Figure 1. Some computer ...

CN-10 Cable Cutter Adjustment

This article will discuss the adjustment of the CN-10. There have been several generations of the CN-10, and the concepts below apply to all. Cable cutters rely upon correct adjustment to keep the cutting blades operating properly. If the tool is not cutting correctly it may need adju...

Mavic Cosmic Carbone SLR Service

This article will review the truing and service of the Mavic Cosmic Carbone SLR. For measuring tension on the Cosmic Carbone SLR use the TM-1 with the most current tension chart. See the download at TM-1. The Mavic Cosmic Carbone SLR wheel systems uses bladed carbon spokes. One long blade ...

SRAM HammerSchmidt Crankset Installation

This article will discuss the installation of the Truvativ® HammerSchmidt™ front transmission system. The HammerSchmidt™ is a two-speed gear system designed into the front crankset. It consists of a special right side drive crank containing internal planetary driven gears, a co...

Wheel Tension Balance App Instructions

The Wheel Tension Balance App is a web-based tool for use with the TM-1 Spoke Tension Meter. It assists the mechanic in achieving consistent overall wheel tension by analyzing and visualizing relative tension between spokes (figure 1). The Wheel Tension Balance App can also be useful when diag...

Standardized Headset Identification System (SHIS)

This article will review the SHIS (Standard Headset Information System). This nomenclature is designed to simplify ordering replacement headsets.

11-speed Chain Service with the CT-11

 This article will review the Campagnolo® 11-speed chain service. This requires the use of both the Park Tool CT-4.2 and CT- 11. The 11-speed Campagnolo® chain has very narrow rollers of 1.98 to 2.0mm width. A typical 10-speed has rollers of approximately 2.1mm. This small dif...

Pedal Bushing Repair Kit Procedure

This article will review the repair of stripped pedal crank threads using the pedal bushing repair kits. NOTE: Park Tool does not make or sell a pedal bushing repair kit. These kits are expensive and in most cases arm replacement in the best option. This article is offered only as an expl...

TS-RK Installation

This article will discuss the installation of the TS-RK rebuild kit into older TS-2 Truing Stands. For centering procedures see Centering the TS-2.   Loosen set screws or cap screws located on both main shaft adjusting collars #209-2. Collars should rotate freely on main shaft ...

CBP Puller Repair

This article will review the replacement of the pulling caliper finger part #1193-2 on the CPB-3 (figure 1). Bearings and cranks that are seized in place may exceed the strength of the caliper and this may cause the caliper to fail. Figure 1. CPB-3 puller Begin by removing the pin for the cr...

PFP-2 Pump Recall

Park Tool Company has discovered a defect in a small percentage of PFP-2 Professional Floor Pumps. Under certain conditions, the check valve on the PFP-2 could fail. If this occurs, the pump's handle could quickly rise upward without warning, potentially causing injury to the user. In order to...

Tubular Tire Gluing (sew up)

Typical Tools and Supplies Needed: Truing stand hold wheel. Use rags to protect stand from glue drips Acid brush or other clean narrow brushes, such as old tooth brush Acetone or other strong solvent Floor Pump Knife or scrapper This article will discuss the mounting and...