Multiquip DCA-85USJ -TRAILER Maintenance, Brake Adjustment, Hydraulic Surge Brakes

Page 45

DCA-85USJ —TRAILER MAINTENANCE

Brakes

Trailer brakes should be inspected the first 200 miles of operation. This will allow the brake shoes and drums to seat properly. After the first 200 mile interval, inspect the brakes every 3,000 miles. If driving over rough terrain, inspect the brakes more frequently.

Figure 57 displays the major hydraulic surge brake components that will require inspection and maintenance. Please inspect these components as required using steps 1 through 8 as listed below:

Brake Adjustment

1.Place the trailer on jack stands. Make sure the jack stands are placed on secure level ground.

2.Check the wheel and drum for free rotation.

3.Remove the adjusting hole cover from the adjusting slot at the bottom brake backing plate.

4.With a screwdriver or standard adjusting tool, rotate the star wheel of the adjuster assembly to expand the brake shoes.

5.Adjust the brake shoes outward until the pressure of the lining against the wheel drum makes the wheel difficult to turn.

6.Adjust, rotate the star wheel in the opposite direction until the wheel rotates freely with slight lining drag.

7.Replace the adjusting hole cover and lower the trailer to the ground.

8.Repeat steps 1 through 7 on the remaining brakes.

Hydraulic Surge Brakes

Hydraulic surge brakes (Figure 57) should not require any special attention with the exception of routine maintenance such as shoe and lining replacement. Brake lines should be periodically checked for cracks, kinks, or blockage.

Figure 57. Hydraulic Brake Components

Actuator

Hydraulic surge braking requires the installation of an actuator at the tongue of the trailer. Remember the surge or push of the trailer toward the tow vehicle automatically synchronizes the trailer brakes with the tow vehicle brakes. As the trailer pushes against the tow vehicle the actuator telescopes together and applies force to the master cylinder, supplying hydraulic pressure to the trailer brakes.

Periodically check and test the surge “actuator” to make sure that it is functioning correctly. Never use an undersize actuator.

Table 14. Hydraulic Brake Troubleshooting

Symptom

Possible Cause

Solution

 

 

 

No Brakes

Brake line broken or kinked?

Repair or replace.

 

 

 

 

Brake lining glazed?

Reburnish or replace.

 

 

 

 

Trailer overloaded?

Correct weight.

Weak Brakes or Brakes Pull to

 

 

Brake drums scored or grooved?

Machine or replace.

One Side

 

 

 

Tire pressure correct?

Inflate all tires equally.

 

 

 

 

Tires unmatched on the same axle?

Match tires.

 

 

 

Locking Brakes

Brake components loose, bent or broken?

Replace components.

 

 

Brake drums out-of-round?

Replace.

 

 

 

 

Noisy Brakes

System lubricated?

Lubricate.

 

 

Brake components correct?

Replace and correct.

 

 

 

 

 

Brake lining thickness incorrect or not

Install new shoes and

Dragging Brakes

adjusted correctly?

linings.

 

 

Enough brake fluid or correct fluid?

Replace rubber parts

 

 

fill with dot 4 fluid.

 

 

 

 

 

DCA-85USJ — OPERATION AND PARTS MANUAL — REV. #0 (09/17/04) — PAGE 45

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Contents Model DCA-85USJ Parts List NO. M28704000042 DCA-85USJ Operation and Parts Manual REV. #0 09/17/04 Wilmington Ave Carson, CA Heres HOW to GET HelpTable of Contents When ordering parts Please supply the following information Parts Ordering ProceduresGenerator Specifications DCA-85USJ SpecificationsDCA-85USJ Dimensions TOP, Side and Front Hazard Symbols DCA85USJ Safety Message Alert SymbolsThis generator, other property, or DCA85USJ Safety Message Alert SymbolsDCA-85USJ Rules for Safe Operation General SafetyGenerator Grounding Electrical SafetyBattery Safety Maintenance SafetyEmergencies Towing &Transporting SafetyGenerator Decals DCA-85USJ Generator DecalsGenerator Decals Cont inued DCA-85USJ Generator DecalsTypical Generator Grounding Application DCA-85USJ InstallationIndoor Installation Outdoor InstallationWhen connecting the generator MountingEngine Operating Panel DCA-85USJ Series Familiarization GeneratorGenerator Control Panel Output Terminal PanelMajor Components DCA-85USJ Major Components20 DCA-85USJ Operation and Parts Manual REV. #0 09/17/04 Be switched off Ammeter phase-selector switchAdjustment of the generator’s output voltage OnlyDCA-85USJ Engine Operating Panel DCA-85USJ Engine Operating Panel Output Terminal Familiarization DCA-85USJ Output Terminal Panel FamiliarizationF.C.I. Receptacle 120VAC Gfci ReceptaclesBlower Fan Connecting LoadsThree Phase Load Single Phase LoadDCA-85USJ Load Application Motors and motor-drivenGenerator Amperage Voltage Selector SwitchGenerator OutputVoltages Gfci Receptacle Load CapabilityHow to Read the OutputTerminal Gauges DCA-85USJ Gauge ReadingReading Amperage DCA-85USJ Output Terminal Panel Connections Three-Phase PositionUvwo Terminal Output Voltages 3Ø 240/139 Output Terminal Lug Voltages1Ø 240V/120V Output Terminal Lug Voltages 3Ø 480/277 Output Terminal Lug VoltagesCircuit Breakers DCA-85USJ PRE-SETUPLubrication Oil Fuel CheckRefueling Refueling ProcedureAir Cleaner Fan BeltTension Cleaning the RadiatorOperation FreezingWeather Vol % Freezing PointBattery Cable Installation BatteryWiring AlternatorEngines exhaust contains harmful emissions Before StartingDirect exhaust away from nearby personnel Close all engine enclosure doors FigurePosition to start the engine Figure Starting ManualOil Pressure Gauge Place the Mpec Control Switch in the Auto position Starting Auto ModeDCA-85USJ Generator SHUT-DOWN Procedure Shutdown ProcedureEmergency Shutdown Procedure DCA-85USJ Maintenance Check Oil Level Air RemovalReplacing Oil Filter Replacing Fuel FilterTo ensure adequate starting Battery chargerTrailer Maintenance DCA-85USJ -TRAILER MaintenanceBrake Adjustment DCA-85USJ -TRAILER MaintenanceBrakes Check the wheel and drum for free rotationTires/Wheels/Lug Nuts TireWear/InflationSuspension Start all wheel lug nuts by hand Lug NutTorque RequirementsDCA-85USJ -TRAILERWIRING Diagram Generator Wiring Diagram DCA-85USJ Generatorwiring DiagramDCA-85USJ Enginewiring Diagram DCA-85USJ -TROUBLESHOOTING Generator Engine Controller Troubleshooting Mpec DCA-85USJ -TROUBLESHOOTING Engine ControllerDCA-85USJ Operation and Parts Manual REV. #0 09/17/04 Explanation of Code in Remarks Column Items Found In the Items Number ColumnIf more than one of the same DCA-85USJ Suggested Spare Parts Part number on this Suggested Spare Parts listDCA-85USJ Generator Assy 8101070033 B61100001020012810035 8101611004DCA-85USJ Control BOX Assy DCA-85USJ Control BOX Assy 60 DCA-85USJ Operation and Parts Manual REV. #0 09/17/04 PL-05 06021030920601810245 0602120096DCA-85USJ Engine & Radiator Assy 4045TF275 M29232000140602041292 RE50483664 DCA-85USJ Operation and Parts Manual REV. #0 09/17/04 0602022561 06020225630603306590 0603300285DCA-85USJ Outputterminal Assy M9220100304 M3230700003M9220100404 0039316000DCA-85USJ Battery Assy 627MFD 0602220187M9310500014 M9103000304DCA-85USJ Muffler Assy 0017112030 M2330100703M2333000703 M2333200204DCA-85USJ Fueltank Assy 0605505070 M23630009020605501073 0605516090DCA-85USJ Enclosure #1 Assy M2363300203 M24130015020603306797 M242300070276 DCA-85USJ Operation and Parts Manual REV. #0 09/17/04 24A M2493103404 M2423201203M3433000803 M3433000813DCA-85USJ Enclosure #2 Assy M3443000812 M34430008028400021~ M349330320380 DCA-85USJ Operation and Parts Manual REV. #0 09/17/04 18A M2493404704 M2453001703M2453001803 19A M2493405104DCA-85USJ Rubber Seals Assy 0229201130 02292008700229201240 0228900660DCA-85USJ Name Plate Assy M15000070 M15000020M25000050 M2520001086 DCA-85USJ Operation and Parts Manual REV. #0 09/17/04 M9520100304 M9520100204M9520100404 M9520100503Freightpolicy Terms and Conditions of Sale PartsDCA-85USJ Operation and Parts Manual REV. #0 09/17/04 Your Local Dealer is