On-Car Brake Lathe Specifications and Maintenance Requirements (05-05-22-001)
Publication date: 2005-06-08Reference number: 05-05-22-001
On-Car Brake Lathe Specifications and Maintenance Requirements
TECHNICAL SERVICE BULLETIN
Reference Number(s): 05-05-22-001, Date of Issue:
June 08, 2005
| Affected Model(s): | 2006 and Prior Passenger Cars and Trucks; 2003-2006 HUMMER H2; 2006 HUMMER H3; 2005-2006 Saab 9-7X |
SERVICE INFORMATION
The purpose of this bulletin is to provide General Motors dealerships with specifications, maintenance and service requirements for on-car brake lathes.
On-Car Brake Lathe Requirements*
- Capable of producing rotor surfaces with less than 0.051 mm (0.002 in) assembled runout.
- Capable of producing flat surfaces (no dishing).
- Capable of producing rotor surfaces with less than 0.0076 mm (0.0003 in) thickness variation.
- Capable of producing surface finish of 40-Ra (Roughness Average) or less (after secondary finish operation).
- All adapters, vibration dampeners, hardware and cutting inserts in good condition.
*Essential tool CH-47661 - Pro-Cut PFM 9.2 Auto-Compensating On-Car Brake Lathe - meets the requirements above and supports Corporate Bulletin Number 00-05-22-002L and Corporate Bulletin Number 03-05-23-005 .
Key Brake Rotor Service Procedure Requirements
- Use secondary non-directional surface finishing tools.
- Measure and document brake rotor original and refinished thickness.
- Use Essential Cleaning Tools J 42450-A and J 41013 to clean rotor hat and hub surfaces before rotor machining.
- Measure all brake rotors with a dial indicator and index that rotor on the hub to correct excessive lateral runout.
- Use the proper Brake-Align® Correctional Plate to correct lateral runout when necessary.
- Use "Torque Sticks" torque limiting sockets or torque wrenches on all wheel nuts.
- Operators properly trained and ASE-certified (U.S. only) in brake service.
On-Car Brake Lathe Maintenance and Service Requirements
On-car lathes must be properly maintained in order to deliver accurate results. General Motors requires the following maintenance service be performed by a certified on-car lathe service technician on an annual basis.
IMPORTANT:
Documentation of on-car brake lathe maintenance service recommended by the lathe manufacturer must be available for review upon request.
Pro-Cut PFM 9.2
- Gib-way cleaned and properly torqued. Never use compressed air to clean the lathe as this can force metal shavings into areas that will cause accelerated wear.
- Flange inspected, cleaned and tightened.
- Solenoid inspected for timing, firing strength and position.
- Tool holder plate checked for damage.
- Trolley inspected to ensure that there is sufficient pivot, strength and travel.
- All adapters inspected for cracks or damage.
- All electrical connections checked for debris or damage.
- Compensation accuracy confirmed with dial indicator.
Hunter OCL400
- The I-Beam Feed Guide should be lubricated with a dry graphite spray. Never use compressed air to clean the lathe as this can force metal shavings into areas that will cause accelerated wear.
- Compensation plate inspected and cleaned per the supplied operator's manual.
- Trolley inspected to ensure that there is sufficient pivot, strength and travel.
- All adapters inspected for cracks or damage.
- All electrical connections checked for debris or damage.
- Compensation accuracy confirmed with dial indicator.