Service parts for the HGLAA
Grouped by system, with how many of each the parts manual calls for.
Electrical
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | gasoline/LPG |
|---|---|
| Controller | EC-AGS+ |
Maintenance & consumables
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | ||||
| Fuel filter | — | ||||
| Oil filter | — | ||||
| Battery | Clean cable connections until surfaces are clear of debris. | wg542eyn | Amazon eBay | ||
| Belt | — | ||||
| Coolant filter | — | ||||
| Spark plug | — |
Service specifications
14| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Other | EC-AGS+ gateway dimensions | 120 x 108 x 38 | mm | |
| Other | Temperature sensor dimensions | 51 x 70 x 17 | mm | |
| Resistance | Gateway harness continuity maximum resistance | 10 | Ohms | repair or replace harness if greater |
| Temperature | EC-AGS+ gateway operating temperature range | -40 to 70 | °C | |
| Temperature | Oil temperature (maximum under all conditions) | 155 | °C | under all conditions |
| Temperature | Temperature sensor operating temperature range | -40 to 85 | °C | |
| Torque | Equipment Grounding Screw | 11 | N·m | |
| Torque | Lifting Bolts | 9 | N·m | |
| Torque | Negative battery cable nut | 11 | N·m | |
| Torque | Positive battery cable nuts | 11 | N·m | |
| Voltage | EC-AGS+ nominal operating voltage | 12 | V | nominal |
| Voltage | EC-AGS+ operating voltage range | 8 to 16 | VDC | |
| Voltage | Minimum house battery voltage for AGS use | 9 | V | AGS not allowed below this |
| Voltage | Temperature sensor battery replacement threshold | 2.5 | V | replace when below |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Recommended fluids
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Fuel | Gasoline - not more than 10% ethanol blend; not more than 5% methanol and must contain solvents and corrosion inhibitors | Gasoline models | |||
| Fuel | HD-5 grade Liquid Propane | Liquid Propane models. Supply pressure: 9-13 inWC (2.25-3.25 kPa) 0.33-0.5 psi. No more than 2.5% butane when operating in low ambient temperatures |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Procedures
12Cooling System - Performance Test diagnostic
Tools: Load bank, PVC Piping, Thermocouple Type K, Clock
- Complete a representative installation.
- Disconnect the AC leads from the vehicle loads.
- Connect the load bank to the AC leads.
- Conduct the test where ambient air temperature remains within the specified range.
- Measure generator set inlet air temperature with a thermocouple tied in the middle of the inlet air grille.
- Measure ambient air temperature with a shielded thermocouple within 1.2 m (4 ft) of the generator set at approximately the same height.
- Measure oil temperature (CAN J1939 or thermocouple).
- Close all compartment doors.
- Run the generator set at full load for at least an hour.
- Record temperatures at 15 minute intervals until they stabilize.
- Stop the generator set and disconnect the load bank.
- Reconnect the AC leads to the vehicle.
Installation and Setup Test diagnostic
- Verify generator set operation using the Start/Stop switch located on the generator set.
- Verify manual start/stop of the generator set from the app dashboard using the START and PRIME/STOP buttons.
- Check operation of the temperature sensors with Auto mode and Air Conditioning Sense enabled.
- Verify the generator set starts automatically when the settings are met.
- Verify the accelerometer by driving the vehicle at 10 mph and checking that AGS is automatically disabled.
- Verify delayed shutdown: enable AGS, allow the generator set to start, disable AGS, confirm shutdown in 10 minutes.
Connect Components (EC-AGS+ Gateway) installation
⚠ Accidental starting of the generator set can cause severe personal injury or death. Disconnect the starting (battery) cables before performing service.
⚠ Always disconnect a battery charger from its AC source before disconnecting the battery cables.
⚠ Seal all holes to prevent the entrance of exhaust gases into the vehicle interior.
- Plug the 12-pin connector from the harness to the EC-AGS+ gateway.
- Route the other end of the harness from the gateway to the Y-harness.
- For gas generator sets, plug the 8-pin EC-AGS+ harness connector into either lead of the Y-harness.
- For diesel generator sets, plug the 10-pin EC-AGS+ harness connector into the longer lead of the Y-harness.
- Connect the main lead of the Y-harness to the generator set.
- Connect the remaining Y-harness connector to the remote start/stop switch harness.
- Route the red wire lead to the positive terminal of the generator set starting battery and extend as necessary using butt connectors.
- Provide circuit protection by installing a 5 Amp fuse in the red wire lead.
- Locate the common ground location on the vehicle and route the black wire lead to the common ground.
- Route the grey wire lead to the engine battery positive terminal (optional connection).
- Insert battery ring terminal to the wires and connect the wires.
- Use cable ties at not less than 0.5 m (20 in) intervals to keep the wire bundle neat.
Connect Temperature Sensor(s) installation
Tools: Small flathead screwdriver
- Remove the lid from the sensor using a small flathead screwdriver.
- Remove the plastic battery tab from the sensor to enable the battery to provide power to the sensor.
- Place the lid back on the sensor.
Generator Set - Lifting installation
⚠ The generator set should not be turned upside down at any time; turning it upside down can cause oil to drain out of the engine.
⚠ Shoulder bolts provided are for lifting only; these bolts are not appropriate for mounting of the generator set.
Tools: 4-legged sling, Brackets, Shoulder bolts
- Insert 2 shoulder bolts on each side of the base pan (shoulder bolts are supplied with the generator set).
- Use a 4-legged sling and insert a bracket at each shoulder bolt.
- Make sure each bracket is seated firmly before lifting.
- Slowly lift the unit off the ground and make sure all brackets and shoulder bolts are seated properly on each side.
- Move the unit slowly to the location.
- Set the generator set on a surface able to safely support the full weight.
- Slide out each bracket from the shoulder bolts.
- Discard lifting bolts.
Mount Components installation
⚠ High ambient temperature can cause damage to the EC-AGS+ gateway.
- Do not install the EC-AGS+ gateway directly inside the generator set compartment.
- Mount the EC-AGS+ gateway in a suitable, easily accessible location.
- Drill holes for the fastening screws and mount the EC-AGS+ gateway using mounting screws.
- Mount the temperature sensor(s) near an A/C thermostat (one per zone, 3 maximum).
- Drill 2 holes for screws and mount the sensor.
Battery Cables and Connections - Remove and Install maintenance
⚠ Battery Exposure: Battery may explode. Battery acid may cause burns or injury. Avoid contact. Wear appropriate personal protective equipment.
Tools: Battery Brush, Wire Brush, Clean Rag, Battery Terminal Sealant
- Make sure the battery compartment is ventilated.
- Remove the negative cable first, then the positive cable.
- Remove OEM components as necessary.
- Clean cable connections, battery terminals, and battery tops until clear of debris.
- Check battery cables, connections, terminals, connectors, and cables; replace if broken, cracked, deformed, or loose.
- Install the positive cable first, then the negative cable.
- Tighten the battery connections; refer to OEM manual for tightening steps.
- Prevent corrosion by applying sealant to the terminals.
Enclosure Door - Remove and Install maintenance
⚠ Solvent Exposure: Skin and eye irritation may occur. Follow manufacturer's instructions for use. Wear appropriate personal protective equipment.
Tools: Solvent, Clean Rag
- Turn the latch clockwise to open.
- Remove the enclosure door.
- Clean the components removed using solvent and a clean rag.
- Check the enclosure door; repair or replace if bent, broken, cracked, cosmetically unacceptable, misassembled, mismachined, or wrong parts.
- Install the enclosure door.
- Turn the latch counterclockwise to close.
Temperature Sensor Battery Replacement maintenance
⚠ Pushing on the cover too hard can damage or break it.
Tools: Small flathead screwdriver
- Make sure the generator set is not set to start in Auto mode.
- Remove the top cover of the temperature sensor using a small flathead screwdriver.
- Slide the battery out of the battery holder and remove the battery.
- Slide the new battery into the battery holder and replace the cover.
Configure System Using App (Getting Started) operation
⚠ For first time set up or after factory reset, the vehicle must be kept stationary for at least 30 seconds to allow the gateway accelerometer to be configured properly.
- Download the EC-AGS+ app from the AppStore for iOS or Play Store for Android.
- Reconnect the generator set negative battery cable to power on the EC-AGS+ gateway.
- Verify that the EC-AGS+ gateway is powered by observing the LED blinking every 5 seconds.
- Turn on Bluetooth on the device containing the app.
- Select the EC-AGS+ App and select Start.
- Connect the gateway to the app via Discover EC-AGS+, Scan QR code, or gateway password.
- Read the End User License Agreement to the end and select Agree.
- Create a new password and select Assign Password.
- Select the generator set model and type; enter the Start Hours from the hour meter if available.
- Select Proceed to Dashboard.
Tailpipe - Remove and Install repair
Tools: Clean Rag
- Lock-Out-Tag-Out the equipment.
- Remove the U-bolt clamps, tailpipe hangers, and tailpipe.
- Clean the components removed using a clean rag.
- Check the tailpipe and tailpipe hangers; repair or replace if bent, broken, cracked, exhaust leaks, misassembled, or mismatched.
- Inspect the U-bolt clamps; repair or replace if broken, cracked, exhaust leaks, or misassembled.
- Install the tailpipe, tailpipe hangers, and U-bolt clamps.
- Re-Energize the equipment.
Tailpipe Adaptor - Remove and Install repair
Tools: Clean Rag
- Lock-Out-Tag-Out the equipment.
- Remove the enclosure door, as necessary.
- Remove the tailpipe, as necessary.
- Access the tailpipe adaptor through the generator set hot air exhaust outlet.
- Remove the clamp, the gasket (discard), and the tailpipe adaptor.
- Clean the components removed using a clean rag.
- Check the tailpipe adaptor; repair or replace if bent, broken, cracked, exhaust leaks, misassembled, or mismachined.
- Install a new gasket, the clamp, and the tailpipe adaptor.
- Install the tailpipe, as necessary.
- Install the enclosure door, as necessary.
- Re-Energize the equipment.
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Voltage reconnection
| Voltage | Phase | Connection | Leads | Notes |
|---|---|---|---|---|
| 8-pin remote control connector | Pin1 Battery ground; Pin2 Stop/Prime; Pin3 Start; Pin4 Not used; Pin5 Hour meter on 12V DC 200mA when running; Pin6 Status light; Pin7 Not used; Pin8 Not used | DT04-3P stub connector for J1939 CAN network: A-CANH, B-CANL, C-Shield (grounded at generator set). Use insulated 18 AWG copper conductors for distances up to 9 m (30 ft) | ||
| 120 V | 1 | Generator set AC leads to vehicle AC distribution panel | Black lead, White lead, Green lead | Leads are 12 AWG and 2.5 m (100 in) in length; generator set has a 1/2 in liquid tight flexible metal conduit connector and a 30 A circuit breaker |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Common questions
What fuel type does the Cummins/Onan HGLAA take?
The Cummins/Onan HGLAA runs on gasoline/LPG.
Repair guides
6- Battery Cables and Connections - Remove and Install
- Cooling System - Performance Test
- Enclosure Door - Remove and Install
- Generator Set - Lifting
- Tailpipe - Remove and Install
- Tailpipe Adaptor - Remove and Install
Step-by-step procedures compiled from the Cummins/Onan service manual for this model.
Parts
20| Part # | Description | Qty | System | |
|---|---|---|---|---|
| A030Y328 | Filter, Air | 1 | Air filter | Amazon eBay $30.43 |
| A061Y865 | Gasket, Crankcase | 1 | Gasket | Amazon eBay |
| A062A970 | Filter, Fuel | 1 | Filter | Amazon eBay |
| A063B884 | Seal, Oil | 1 | Seal | Amazon eBay |
| A063D835 | Seal, Oil | 1 | Seal | Amazon eBay |
| A063D837 | Gasket, Crankcase | 1 | Gasket | Amazon eBay |
| A063E051 | Baffle, Air (Upper Cylinder Head) | 1 | Baffle | Amazon eBay |
| A063E052 | Baffle, Air (Lower Cylinder Head) | 1 | Baffle | Amazon eBay |
| A063E057 | Bracket, Engine Mounting (Left) | 1 | Bracket | Amazon eBay |
| A063E058 | Bracket, Engine Mounting (Right Front) | 1 | Bracket | Amazon eBay |
| A063E059 | Bracket, Engine Mounting (Left Front) | 1 | Bracket | Amazon eBay $12.00 |
| A063E060 | Bracket, Front Failsafe Mounting | 1 | Bracket | Amazon eBay |
| A063E061 | Bracket, Rear Failsafe Mounting | 1 | Bracket | Amazon eBay |
| A063E126 | Kit, Valve | 1 | Kit | Amazon eBay |
| A063E127 | Motor, Starter | 1 | Starter | Amazon eBay |
| A063P557 | Kit, Full Service | 1 | Kit | Amazon eBay |
| A063V498 | Motor, Starter | 1 | Starter | Amazon eBay |
| A061Y859 | Plug, Drain | 1 | Service part / kit | Amazon eBay |
| A063D063 | Plug, Spark | 1 | Service part / kit | Amazon eBay |
| A063D836 | Dipstick | 1 | Service part / kit | Amazon eBay |
Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Fuel consumption
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| 0.53 | 0.14 | ||
| 50% | 0.79 | 0.21 | |
| 100% | 1.74 | 0.46 |
Available documents
This page was generated from the 4 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.