GB2142102A - Modification of leyland truck rear brake shoe - Google Patents

Modification of leyland truck rear brake shoe Download PDF

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Publication number
GB2142102A
GB2142102A GB08234154A GB8234154A GB2142102A GB 2142102 A GB2142102 A GB 2142102A GB 08234154 A GB08234154 A GB 08234154A GB 8234154 A GB8234154 A GB 8234154A GB 2142102 A GB2142102 A GB 2142102A
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GB
United Kingdom
Prior art keywords
modification
brake shoe
roller
brake
truck rear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB08234154A
Inventor
William Russell Jones
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB08234154A priority Critical patent/GB2142102A/en
Publication of GB2142102A publication Critical patent/GB2142102A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/22—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for pressing members apart, e.g. for drum brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
    • B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
    • F16D2125/22—Mechanical mechanisms converting rotation to linear movement or vice versa acting transversely to the axis of rotation
    • F16D2125/28—Cams; Levers with cams
    • F16D2125/30—Cams; Levers with cams acting on two or more cam followers, e.g. S-cams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/44—Mechanical mechanisms transmitting rotation
    • F16D2125/56—Shafts for transmitting torque directly

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Braking Arrangements (AREA)

Abstract

Modification of the Leyland Truck Rear Brake Shoe, incorporates the removal and discarding of the existing wearing pad 675K11 and the substitution of spacers and rollers utilising the existing fixing bolts. Rollers are to be fitted in such a way that a cam operates on a large moving roller with a spacer inside. <IMAGE>

Description

SPECIFICATION Rear brake shoe modification (Incorporating 672K1 I Brake Shoe) Purpose: This modification has been designed to overcome the brake binding problems caused by the cam and brake shoe wearing pad (675K1 1) becoming grooved and rusted after several months in service and so requiring cleaning, lubricating etc.
Provided the brake shoe modification is fitted as per the instructions below, the brake will give trouble-free service between relining and has been proved in service for several years.
Fitting instructions: Remove brake shoes (672K1 1) from brake assembly.
Remove the 7/16" Bolts (1054Z63) and discard the wearing pad (675K11). Lubricate with water resisting grease the inside of the largest roller and fit the modification rollers and spacers to the shoes, as shown in the diagram, by securing with existing 17/16" bolts.
Care should be taken to ensure that the rollers are fitted in such a way that the cam is operating on the large moving roller to expand the shoe (See drawing).
Notes: 1. It is recommended that water resisting grease be used. (eg. water-pump grease.
2. The cam and exterior surface of the large moving roller should be clean and free of grease.
3. When fitting the brake shoes, it is important to ensure that there is completely free movement at the fulcrum or anchor end of the brake shoe and that this area is lubricated with water resisting grease on assembly.
4. It is strongly recommended that the brakes are dismantled a few weeks before each annual M.O.T.
test and the linings cleaned, inspected and renewed as required. The large moving roller of the modification must also be removed, cleaned and greased to ensure further trouble-free operation.
1. A Roller Modification of the Leyland Truck Rear Brake Shoe, Part No. EU672K11 incorporating the removal and discarding of the wearing pad Part No. 675K1 1 and, in place, the fitting of 2 Spacers and 1 roller utilising the original fixing bolts to each of the two brake shoes of a brake unit.
2. A Roller Modification of the Leyland Truck Rear Brake Shoe (EU672K11) as claimed in Claim 1 which may be fitted without the requirement of special tools our further modification of the existing brake shoe (EU672K1 1).
3. A Roller Modification of the Leyland Truck Rear Brake Shoe (EU72K11) as claimed in Claim 1 and Claim 2 in which the Spacers and Rollers are manufactured of either high tenstile, stainless or mild steel, the latter being case hardened and cadmium or zinc plated.
4. A Roller Modification of the Leyland Truck Rear Brake Shoe (EU672K1 1) which enables the operating cam of the existing system to function on the Modification Rollers as claimed in Claims 1,2 and 3, so as to obviate the periodic binding problem associated with the existing Leyland Truck Rear Brake Shoes in their original form, through wear, grooving and rusting of the original wearing pad, Part No. 765K1 1.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (4)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Rear brake shoe modification (Incorporating 672K1 I Brake Shoe) Purpose: This modification has been designed to overcome the brake binding problems caused by the cam and brake shoe wearing pad (675K1 1) becoming grooved and rusted after several months in service and so requiring cleaning, lubricating etc. Provided the brake shoe modification is fitted as per the instructions below, the brake will give trouble-free service between relining and has been proved in service for several years. Fitting instructions: Remove brake shoes (672K1 1) from brake assembly. Remove the 7/16" Bolts (1054Z63) and discard the wearing pad (675K11). Lubricate with water resisting grease the inside of the largest roller and fit the modification rollers and spacers to the shoes, as shown in the diagram, by securing with existing 17/16" bolts. Care should be taken to ensure that the rollers are fitted in such a way that the cam is operating on the large moving roller to expand the shoe (See drawing). Notes:
1. It is recommended that water resisting grease be used. (eg. water-pump grease.
2. The cam and exterior surface of the large moving roller should be clean and free of grease.
3. When fitting the brake shoes, it is important to ensure that there is completely free movement at the fulcrum or anchor end of the brake shoe and that this area is lubricated with water resisting grease on assembly.
4. A Roller Modification of the Leyland Truck Rear Brake Shoe (EU672K1 1) which enables the operating cam of the existing system to function on the Modification Rollers as claimed in Claims 1,2 and 3, so as to obviate the periodic binding problem associated with the existing Leyland Truck Rear Brake Shoes in their original form, through wear, grooving and rusting of the original wearing pad, Part No. 765K1 1.
4. It is strongly recommended that the brakes are dismantled a few weeks before each annual M.O.T.
test and the linings cleaned, inspected and renewed as required. The large moving roller of the modification must also be removed, cleaned and greased to ensure further trouble-free operation.
1. A Roller Modification of the Leyland Truck Rear Brake Shoe, Part No. EU672K11 incorporating the removal and discarding of the wearing pad Part No. 675K1 1 and, in place, the fitting of 2 Spacers and 1 roller utilising the original fixing bolts to each of the two brake shoes of a brake unit.
2. A Roller Modification of the Leyland Truck Rear Brake Shoe (EU672K11) as claimed in Claim 1 which may be fitted without the requirement of special tools our further modification of the existing brake shoe (EU672K1 1).
3. A Roller Modification of the Leyland Truck Rear Brake Shoe (EU72K11) as claimed in Claim 1 and Claim 2 in which the Spacers and Rollers are manufactured of either high tenstile, stainless or mild steel, the latter being case hardened and cadmium or zinc plated.
GB08234154A 1982-11-30 1982-11-30 Modification of leyland truck rear brake shoe Withdrawn GB2142102A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08234154A GB2142102A (en) 1982-11-30 1982-11-30 Modification of leyland truck rear brake shoe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08234154A GB2142102A (en) 1982-11-30 1982-11-30 Modification of leyland truck rear brake shoe

Publications (1)

Publication Number Publication Date
GB2142102A true GB2142102A (en) 1985-01-09

Family

ID=10534639

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08234154A Withdrawn GB2142102A (en) 1982-11-30 1982-11-30 Modification of leyland truck rear brake shoe

Country Status (1)

Country Link
GB (1) GB2142102A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1163129A (en) * 1965-10-11 1969-09-04 Crane Fruehauf Trailers Ltd Brake Roller Retainer for Internal Shoe Drum Brakes.
GB1281746A (en) * 1969-08-13 1972-07-12 Fruehauf Corp Expanding mechanism for internal shoe drum brakes
GB1396473A (en) * 1972-03-03 1975-06-04 Sauer F R Sauer Achsenfabrik O Holding and safety device for braking systems
GB2013800A (en) * 1978-02-03 1979-08-15 Eaton Corp Brake having improved roller pin
GB2066910A (en) * 1979-12-31 1981-07-15 Rockwell International Corp Roller retainer for cam-actuated brake assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1163129A (en) * 1965-10-11 1969-09-04 Crane Fruehauf Trailers Ltd Brake Roller Retainer for Internal Shoe Drum Brakes.
GB1281746A (en) * 1969-08-13 1972-07-12 Fruehauf Corp Expanding mechanism for internal shoe drum brakes
GB1396473A (en) * 1972-03-03 1975-06-04 Sauer F R Sauer Achsenfabrik O Holding and safety device for braking systems
GB2013800A (en) * 1978-02-03 1979-08-15 Eaton Corp Brake having improved roller pin
GB2066910A (en) * 1979-12-31 1981-07-15 Rockwell International Corp Roller retainer for cam-actuated brake assembly

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)