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 fi rst 200 mile interval, inspect the brakes every 3,000 miles. If driving over rough terrain, inspect the brakes more frequently.
Figure 61 displays the major hydraulic surge brake components that will require inspection and maintenance. Please inspect these components as required using steps
1 through 8 and Table 15 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 diffi cult 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 61) 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 61. 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 15. Hydraulic Brake Troubleshooting
| Symptom | Possible Cause | Solution | |
| No Brakes | Brake line broken or kinked? | Repair or replace. | |
| | Brake lining glazed? | Reburnish or replace. | |
| Weak Brakes or Brakes Pull to | Trailer overloaded? | Correct weight. | |
| | | |
| Brake drums scored or grooved? | Machine or replace. | |
| One Side | |
| | | |
| Tire pressure correct? | Infl ate all tires equally. | |
| | |
| | | | |
| | Tires unmatched on the same axle? | Match tires. | |
| | | | |
| | Brake components loose, bent or | Replace components. | |
| Locking Brakes | broken? | |
| | |
| | Brake drums out-of-round? | Replace. | |
| Noisy Brakes | System lubricated? | Lubricate. | |
| Brake components correct? | Replace and correct. | |
| | |
| | Brake lining thickness incorrect or | Install new shoes and | |
| Dragging Brakes | not adjusted correctly? | linings. | |
| Enough brake fl uid or correct fl uid? | Replace rubber parts | |
| | |
| | fi ll with dot 4 fl uid. | |
| | | |
| | | | |
PAGE 42 — DCA125USI 60 HZ GENERATOR • OPERATION AND PARTS MANUAL — REV. #1 (03/25/11)
Model DCA125USI
This Manual Must Accompany the Equipment AT ALL Times
Proposition 65 Warning
Reporting Safety Defects
Administrator
Nhtsa
Table of Contents
DCA125USI 60 Hz Generator
Parts Ordering Procedures
Ordering parts has never been easier
Safety Information
Safety Messages
General Safety
Generator Safety
Always know the location of the nearest
Engine Safety
Before servicing equipment
Never use fuel as a cleaning agent
Fuel Safety
Towing Safety
From fuel vapors or if fuel is spilled on a hot engine
Electrical Safety
Device. All installations should be
Never use gas piping as an electrical ground
Battery Safety
Environmental Safety
Specifications
DCA125USI
Dimensions
Dimensions
Installation
Typical Generator Grounding Application
Mounting
Outdoor Installation
Indoor Installation
Generator Grounding
General Information
Major Components
Generator Control Panel
Owing from the U,V, and W Output Terminal Lugs to the load
Page
Engine Operating Panel
Engine Operating Panel
Fuel Gauge Indicates amount of diesel fuel available
Module
Output Terminal Panel Familiarization
Output Terminal Familiarization
Terminal legs O and Ground are considered bonded grounds
Removing the Plastic Face Plate Hard Wire Hookup Panel
VAC Gfci Receptacles
Twist Lock Dual Voltage 120/240 VAC Receptacles
Connecting Loads
Over Current Relay
Single Phase Load
Three Phase Load
Load Application
Generator Outputs
Generator Output Voltages
HOW to Read the AC Ammeter and AC Voltage Gauges
Generator OUTPUTS/GAUGE Reading
AC Voltmeter Gauge Reading
3Ø-240/139 Uvwo Terminal Output Voltages
Output Terminal Panel Connections
Uvwo Terminal Output Voltages
3Ø-208V/1Ø-120V Uvwo Terminal Output Voltages
3Ø-480/277V Uvwo Terminal Output Voltages
1Ø-240/120V Uvwo Terminal Output Voltages
Lubrication OIL
INSPECTION/SETUP
Circuit Breakers
Fuel Check
Refueling Procedure
Only use #2 diesel fuel when refueling
Coolant ANTIFREEZE/SUMMER COOLANT/ Water
Cleaning the Radiator
AIR Cleaner FAN Belt Tension
Operation in Freezing Weather
Wiring
Battery
Battery Cable Installation
Alternator
Starting
Generator START-UP Procedure
Before Starting
Starting Manual
Pre-Heat Lamp
Emergency Shutdown Procedure
Generator SHUT-DOWN Procedures
Normal Shutdown Procedure
To shutdown the generator, use the following procedure
Maintenance
General Inspection AIR Cleaner
Air Cleaner with Dust Indicator
Fuel Addition
Fuel Tank Inspection
AIR Removal
Replacing Oil Filter
Radiator Cleaning
Check OIL Level
Flushing OUT Radiator and Replacing Coolant
Battery Charger & Jacket Water Heater Power Connections
Trailer Maintenance
Trailer Maintenance
Coupler Type of hitch used on the trailer for towing
Hydraulic Surge Brakes
Brake Adjustment
Brakes
Through 8 and as listed below
TIRES/WHEELS/LUG Nuts
Tire Wear/Infl ation
Suspension
Lug Nut Torque Requirements
Start all wheel lug nuts by hand
Never use an pneumatic air gun to tighten wheel lug nuts
Trailer Wiring Diagram
Trailer/Towing Vehicle Wiring Diagram
Generator Wiring Diagram
Generator Wiring Diagram
Engine Wiring Diagram
Engine Wiring Diagram
Controller Wiring Diagram
Controller Wiring Diagram
Troubleshooting Generator
Troubleshooting Diagnostic Lamp
Method of Operation
Page
Sample Parts List
Explanation of Code in Remarks Column
Xxxxx only Not Used on
Suggested Spare Parts
To 3 units
Generator Assy
Field Assy
Part Name QTY. Remarks
Includes Items W/#
FAN
Control BOX Assy
Selector Switch
Push Button Switch
Diagonastic Switch
Switch Bracket
Control BOX Assy
Water Temperature Gauge
Switch Cover
Alarm Lamp
SWITCH, Panel Light
Engine and Radiator Assy
Bracket AIR Cleaner
AIR Cleaner
INDICATOR, AIR Cleaner
BAND, AIR Cleaner
Engine and Radiator Assy
Blow by Hose
Connector
AIR Duct Hose
Hose Joint
Engine and Radiator Assy
FAN Shroud
BRACKET, Inter Cooler
Cooler Hose
BRACKET, FAN Shroud
Output Terminal Assy
Terminal Cover
Terminal Board
Output Terminal Bolt
Output Window
Battery Assy
Battery Band
Battery
Battery Sheet
Battery Bolt SET
Muffler Assy
Muffler
Gasket
Bolt SET
Fuel Tank Assy
Fuel Sender Unit
Fuel Tank
Fuel Tank CAP
Connect Hose
Enclosure ASSY. Part
Enclosure ASSY. PART1
Enclosure ASSY. Part
Over COVER, Front Frame
Back Plate
Duct
COVER, Radiator CAP
Enclosure ASSY. Part
Rear Frame
Enclosure ASSY. Part
Seal Rubber
Washer
Manual PAK
Rubber Seals Assy
Part Name
Nameplate and Decals Assy
Engine & Radiator Group
Battery Group
Control BOX Group
Output Terminal Group
Nameplate and Decals Assy
Fuel Tank Group
Enclosure Group
Terms and Conditions of Sale Parts
Freight Policy
Page
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