Cummins K19 Series Diesel Engine Troubleshooting and Repair Manual (P/N 3810307-00)
Cummins Models Covered & Key Technical Specifications
Models: Cummins K19 Series
Sub-models / Variants: KT, KTA, KTA-C(700), KTTA
Trade Names: K19
Model Years: 1986
Technical Data:
- Engine displacement: 18.7 liters (1150 C.I.D.)
- Engine weight (Dry): 1720 kg (3800 lb)
- Engine weight (Wet): 1800 kg (3965 lb)
- Firing order: 1-5-3-6-2-4
- Intake valve adjustment: 0.36 mm (0.014 in)
- Exhaust valve adjustment: 0.69 mm (0.027 in)
- Compression ratio (KT): 15.5:1
- Compression ratio (KTA): 14.5:1 or 15.5:1
- Compression ratio (KTA-C 700 / KTTA): 13.8:1
- Oil pressure (Idle): 138–483 kPa (20–75 psi)
- Oil pressure (Rated): 345–517 kPa (50–75 psi)
- Coolant capacity: 30 Liters (32 U.S. Quarts)
- Thermostat range: 80°C to 90°C (175°F to 195°F)
Cummins Manual Features & Content Preview
- Official 713-page OEM publication (Bulletin No. 3810307-00, printed September 1986).
- Covers 1986 Cummins K19 Series engines, specifically documenting the KT, KTA, KTA-C(700), and KTTA variants.
- Contains 21 troubleshooting logic charts, detailed component identification diagrams, and comprehensive valve and injector adjustment tables.
- Serves as the foundational technical reference for the K19 family, documenting early engine specifications and cooling system parameters that differ from later service documentation.
Engine Troubleshooting and Identification
When diagnosing heavy-duty equipment, having exact factory parameters saves hours of guesswork in the bay. This 1986 manual organizes diagnostics into logical subsystems including cooling, oil, combustion air, fuel, and electrical. You get direct troubleshooting charts for real-world shop issues like excessive crankcase blow-by, abnormal turbocharger noise, and fluctuating idle speeds. Before initiating any teardown or maintenance, always review the listed handling practices for hazardous cleaning chemicals and specific weight-conscious hoisting procedures to ensure a safe workspace. The introduction clearly defines these essential safety protocols and terminology right up front.
Specification Highlights
You will find the precise technical data needed for accurate rebuilds and routine maintenance. The cylinder head specification tables list the intake valve adjustment at 0.36 mm. It documents the K19 coolant system capacity at 30 liters, with a standard operating thermostat range of 80°C to 90°C. Additionally, the manual details pressure ranges for the lubricating oil system at both idle and rated operation, along with coolant temperature thresholds and intake air restriction limits. These factual reference values provide the required baseline data for servicing early K19 series engines correctly the first time.
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