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First Gen Dodge Ram 12 Valve Diesel
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| Maintenence Schedule | A - Normal Service Intervals | B - Severe Duty Service Intervals | |||
| Miles | Months | Engine Hours | Miles | Hours | |
| Check oil, drain filter sediment and water |
- Every fuel stop - |
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| Oil & Filter Change | 6000 | 6 | 250 | 3000 | 200 |
| Fuel Filter Change | |||||
| Fuel Filter Screen Change | |||||
| Change coolant | |||||
| Inspect water pump weep hole | |||||
| Valve Adjustment | 24000 | ||||
| Adjust Brakes | |||||
| Idle Speed Adjustment | |
| Thermostat replacement | Service manual pages 7-33 and 7-34 from TSB 07-04-94 |
| Thermostat replacement | Instructions from TSB 07-07-94 |
| Fan Drive Belt Replacement | R&R instructions |
| Fan and Hub Replacement | R&R instructions |
| Injection Pump Replacement | R&R instructions in Recall 605 |
Troubleshooting the DODGE CUMMINS 5.9L (1989-1993)
| No Throttle, weak throttle | Plastic throttle rod ends fail, resulting in sloppy throttle or no throttle response. |
| Troubleshooting and Tips | Tips from Wilkinson Diesel. |
| Troubleshooting and Tips |
Diesel Injection Service diesel and turbocharger trouble charts, hard starting diagnosis, stalling, smoke, etc, |
| Turbocharger diagnostics | from the Star Center News |
| Add a centrifugal oil filter |
photos and some detail from John Pavlovic |
| Install a pyrometer/boost gauge | photos and instructions on the Gateway Diesel Owners Association site |
| Install a pyrometer | instructions at TST's web site |
| Installing Larger Injectors | Tips from the mail lists and message boards |
| DIY Injector Removal tool | Build a tool from common hardware |
| Prelub oil pump review | article from Brad Albrecht |
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