SFN-20240118A Install Bendix TR-3

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TICO Document #: SFN-20240118A (formerly TES 140)

Description of Procedure: Instructions for installation of Bendix TR‐3 (Inversion valve

Units Affected: Tier 3, Tier 4i, ISB 13/15

Parts Required: TR‐3 inversion valve, 91966 (QTY 1)

  • Fitting, adapter 90°, 3/8 tube x 1/8 NPT, 40885 (QTY 1)

  • Fitting, adapter 90°, ¼ tube x ¼ NPT, 40861 (QTY 2)

  • Fitting, union tee, 3/8 tube, 42273 (QTY 1)

  • Tubing ‐ nylon air brake, ¼, white (10” required), 11020 (QTY 1)

  • Tubing ‐ nylon air brake, 3/8, black (8” required), 11004 (QTY 1)

Planned Labor: 45 minutes

Instructions:

  1. Park vehicle on flat surface, apply parking brake, and chock wheels. If your company utilizes a “Lock Out, Tag Out” policy, you should employ it during this procedure.

  2. Release/vent all air in the system. This can be done by manually releasing valves at the bottom of the air tank.

  1. Remove battery box cover and disconnect battery cables. Remove batteries or insulate terminal ends with a non‐conductive wrap to prevent inadvertent contact between battery terminals and cables.

  1. Loosen turn signal switch from steering column using flat head screwdriver or 5/16 bit driver.

  1. Remove diagnostic panel by removing #10 socket head screws with 1/8” hex key wrench. Panel is located at lower left-hand side of dash cover. There are 6 screws for this panel.

  1. Behind diagnostic panel, disconnect the connectors for the engine diagnostic switch, the increment/decrement switch, and abs diagnostic switch if applicable.

  2. Push connectors back into the dash bucket and return diagnostic panel to its original position.

    Note: Do not secure panel in place at this time.

  1. Remove key switch panel from dash cover assembly by removing four #10 socket head screws with 1/8” hex key wrench.

  1. Gently pull key switch panel away from dash cover. Remove connector for A/C switch and push it back into dash bucket.

  2. Return key switch panel to original position.

    Note: Do not secure panel in place at this time.

  1. Inside cab, remove gauge panel by removing #10 socket head screws with 1/8” hex key wrench. Panel is located at top of dash cover. There are 7 screws for this panel.

  1. Gently tilt the gauge panel away from dash cover. This will expose the back of the panel and the wires attached to the gauges.

  1. On top right-hand side of gauge panel, remove connections for flood lights/work lights switch, strobe light switch, and motorized mirror switch if applicable.

  1. Remove air line(s) for air pressure gauge.

    Note: On split brake systems, there will be two airlines, green and black.

  1. Continue lifting gauge panel away from dash cover assembly. Locate connector between dash gauge harness and cab PDC harness, shown above.

  1. Unscrew connectors securement hardware using 5/16 bit driver

  1. Remove leads to the hour meter, shown on left. Note: red wire on terminal 1, white wire on terminal 2, and brown wire on terminal 3.

  2. Remove dash gauge panel with attached harness from dash cover and bucket assembly.

  1. Assemble inversion valve, 91966, as shown above.

  1. Mount 91966, inversion valve, to the rightmost bottom area of plywood using two #12 X 1 3/4” wood screws, orient as shown. Leave enough room below valve to manipulate fittings and prevent chafing on wiring and ducts.

  2. Splice 42273, union tee, into delivery side of trailer parking brake valve about 6” from valve, PP‐3 valve shown. On MV‐3 valves, the delivery port is labeled TRL DEL 21 and is the top left port when viewed from above.

  3. Connect control port of 91966 to 42273 Union Tee using 11004 air brake line.

Note: Fifth wheel panel is shown uninstalled for clarity.

  1. Remove six # 10 machine screws securing 5th wheel/shifter panel and lift up so that air brake lines on valves are visible, as shown.

  2. Disconnect supply port to 5th wheel release valve and connect it to supply port of 91966 valves. Cut and discard excess length of air line.

  3. Connect delivery port of 91966 valve to supply port of 5th wheel release valve using 11020 air brake line.

    Note: Fifth wheel panel is shown uninstalled for clarity.

  1. Reinstall dash gauge panel and harness in the reverse order that it was removed in. Ensure no wires are pinched or removed from terminals during this process.

  1. Reconnect battery cables to appropriate battery terminals.

  1. Connect tractor to trailer and connect glad hands. Firmly press the treadle, brake, and valve and release the tractor and trailer parking brake valves. Attempt to engage 5th wheel release, 5th wheel latch should not move. Re‐engage tractor and trailer parking brake valves and engage 5th wheel release. 5th wheel latch should be released. If not check for leaks and errors in air line routing, then retest system.

  1. Secure all loose panels in place with #10 machine screws previously removed.

  1. Remove “Lock Out, Tag Out” plaque.

  1. Return vehicle to service.