Service parts for the M1895s
Grouped by system, with how many of each the parts manual calls for.
Cooling system
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Voltage options | 24 V, 12 V |
|---|---|
| Phase | single |
| Circuit breaker | 30 A |
Maintenance & consumables
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Coolant filter | COOLANT EXPANSION TANK AND PRESSURE CAP | 9600148 | Amazon eBay |
Troubleshooting
6Symptoms & remedies
| Symptom | Remedy |
|---|---|
| The engine does not crank. | Service the battery and battery terminals and cables. See Maintenance. Replace the control circuit fuse (above the flywheel housing in a twist-lock holder) if it has blown. |
| The engine cranks, but does not start. | Check the fuel supply. If a fault circuit breaker has tripped, service the fault, and reset the circuit breaker. Service the battery if the engine cranks too slowly to start, refill with engine oil of suitable viscosity and plug in or service the engine coolant heater, if provided. Install an engine coolant heater if necessary. See Maintenance. |
| The engine coolant temperature gauge indicates 2200F or more while the engine is running. | Shut down the set if possible. See Maintenance for servicing the cooling system. Disconnect as many non-critical loads as possible so that the engine will run cooler, and service as soon as possible. |
| The engine shuts down due to high engine temperature or low coolant level. | Shut down the set if possible. See Maintenance for servicing the cooling system. Disconnect as many non-critical loads as possible so that the engine will run cooler, and service as soon as possible. |
| The engine oil pressure gauge indicates less than 20 psi. | Shut down the set if possible. Fill oil, if necessary. Disconnect as many non-critical loads as possible so that the engine will run cooler, and service as soon as possible. |
| The engine shuts down due to low oil pressure or low oil level. | Shut down the set if possible. Fill oil, if necessary. Disconnect as many non-critical loads as possible so that the engine will run cooler, and service as soon as possible. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Cummins/Onan M1895s troubleshooting guide (8 entries) →
Parts
2| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 9600148 | COOLANT EXPANSION TANK AND PRESSURE CAP | 1 | Coolant filter | Amazon eBay |
| CS1391 | SEA WATER COCK | Sea water cock | 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.
Available documents
Service manual — 960-0148 Onan MCGBA DA CA CB DB GA Operators Manual (6-1991) (Cummins/Onan)Service manual — 960-0613 Onan MDGxx series Marine Diesel Genset Installation manual (07-1991) (Cummins/Onan)