DATA PD BS7... Spring Brakes (Disc), diaphragm/diaphragm. Product. Function. Technical Features

Transcription

1 Commercial Vehicle Systems Product DATA PD Function This range of Spring Brakes is used on axles fitted with air disc brakes and provides the service and parking brake functions. The internal wind off mechanism allows the parking brake force to be removed if air pressure is no longer present. The Spring Brakes have a mounting seal integrated in the non-pressure housing which prevents the entry of dirt or water into the disc brake caliper. See PD , Document No. Y for the full range of Spring Brakes for trailers. Technical Features Maximum operating pressure: 1 bar Full hold-off pressure: 5.5 bar Operating temperature range: -40 C to +80 C Sealing of secondary chamber: Rubber Boot Push rod stroke: See table Port threads: M16x1.5 Release device: Mechanical Weight: See table Standard Symbol as DIN ISO BX

2 PD Product Data Range Overview Part No. Type No. Service Brake [Type] Size Parking Brake [Type] Stroke TÜV Inspection Report Weight approx. [kg] K ) BS BZ K ) BS K ) BS K ) BS K ) BS K ) BS Service Brake 6.9 K ) BS FBKV 6.9 K )2) Spring Brake 7.1 BS FBKV K )2) K )3) BS7403 K )3) K )4) BS7404 K )4) ) The part number will carry a suffix, N## which defines the packaging requirements of different market sectors, e.g. N00, N50. Example: K026894N00 - is supplied without packaging. 2) K045570N00 will be replaced by K121104N00. 3) K045718N00 will be replaced by K121105N00. 4) K045719N00 will be replaced by K121106N00. Actuator mounting kit available comprising 2 off hexagon lock nuts: Part Number II36860* * must be ordered separately! Note: when spring brakes are replaced, ensure that the units on both sides of the axle have the same stroke capability. Other sizes are available. 2

3 Commercial Vehicle Systems PD Dimensions L M max α Ball R 8 15 ± Ø max R β 25 M16x1.5 Tightening torque Nm M16x1.5 Tightening torque 40±5 Nm Holder for wind-off bolt H Part No. Type No. H L M R K ) BS K ) BS K ) BS K ) BS K ) BS K ) BS K ) BS K )2) BS7402 K )2) K )3) BS7403 K )3) K )4) BS7404 K )4) α [ ] β [ ] 1) The part number will carry a suffix, N## which defines the packaging requirements of different market sectors, e.g. N00, N50. Example: K026894N00 - is supplied without packaging. 2) K045570N00 will be replaced by K121104N00. 3) K045718N00 will be replaced by K121105N00. 4) K045719N00 will be replaced by K121106N00. 3

4 PD Product Data Performance Charts Service Brake BS7304 BS7309, BS7318, BS BS7751, BS7755 BS BS7402, BS7403, BS mm Stroke BS7402, BS7403, BS mm Stroke 1 0 min

5 Commercial Vehicle Systems PD BS7304, BS7309, BS7318, BS7319, BS7402, BS7403, BS7404, BS7751, BS7755, BS mm Stroke Parking Brake BS7402, BS7403, BS mm Stroke Maximum required hold-off pressure 5.5 bar Maximum required hold-off pressure 5.5 bar 0 max min. Parking brake output [N] 0 max min. min Parking brake output [N] Installation and Mounting instructions Detailed information concerning the mounting of disc brake actuators can be found in the service manual Y Special Note: If the actuator is supplied with the drain holes plugged, remove the lowest plug (as viewed when the actuator is installed). Note: when spring brakes are replaced, ensure that the units on both sides of the axle have the same stroke capability. 5

6 PD Product Data Winding-off the Power Spring In case of failure in the air system, to release the actuator s spring force: Ensure wheels are chocked. Remove release bolt from its holder (Figs. 1 & 2) Unclip closure cap (Fig. 3). Fully insert T end of the release bolt into the spring portion and rotate to engage in the internal slot (Fig. 4) Fit washer and nut. Rotate the nut (19 mm AF) in a clockwise direction (Fig. 5). Max. torque 68 Nm. Attention: Attention: Use only the correct sized ring or open-ended spanner! The parking brake portion of the Spring Brake contains a very high spring load and it is strongly recommended that you do not attempt any disassembly of this portion. This should also be taken into consideration when disposing of spring brakes of any type. Revision Details Rev. 003 March 2011 Format changed to new layout and part number list revised. Rev. 004 September 2011 Reference to PD added. Port threads added to Technical Features. Rev mm stroke units added. 6