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Torque Specs For The Cummins KTA19 Marine Engine Cylinder Head 

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PART/MATERIAL/COLOR

LENGTH

TORQUE VALUE IN NM [ FT-LB ]

SHINEY CHROME HEAD BOLT	170MM [6¾ IN]	1. 65 N•M [ 48 FT-LB ] 2. 160 N•M [ 118 FT-LB ] 3. 250 N•M [ 184 FT-LB ] 4. 345 N•M [ 254 FT-LB ]
BLACK HEAD BOLT	170 MM [6¾ IN]	1. 65 N•M [ 48 FT-LB ] 2. 200 N•M [ 148 FT-LB ] 3. 340 N•M [ 251 FT-LB ] 4. 490 N•M [ 361 FT-LB ]
ZINC PHOSPHATE GRAY HEAD BOLT	203 MM [8 IN]	1. 65 N•M [ 48 FT-LB ] 2. 200 N•M [ 148 FT-LB ] 3. 340 N•M [ 251 FT-LB ] 4. 490 N•M [ 361 FT-LB ]
ZINC PHOSPHATE GRAY BOLT	203 MM [8 IN]	1. 65 N•M [ 48 FT-LB ] 2. 200 N•M [ 148 FT-LB ] 3. 300 N•M [ 221 FT-LB ] 4. ADVANCE 90 DEGREES

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Cylinder Head & related components for Cummins KTA19 Marine Engine

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Torque Specs for Cummins KTA19 Marine Engine Overhead Set

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PART/MATERIAL/COLOR

LENGTH

TORQUE VALUE IN NM [ FT-LB ]

ROCKER ADJUSTING SCREW	N/A	1. 11 N•M [ 100 IN-LB ] 2. LOOSEN ADJUSTING SCREW 1 REVOLUTION. 3. 10 N•M [ 90 IN-LB ]
ROCKER LOCK NUT W/ TORQUE WRENCH ADAPTER	N/A	1. 45 N•M [ 33 FT-LB ]
ROCKER LOCK NUT W/O ADAPTER	N/A	1. 60 N•M [ 44 FT-LB ]
INTAKE AND EXHAUST CROSSHEAD LOCK NUT	N/A	WITHOUT JACOBS® BRAKE (WITH ADAPTER) 1. 35 N•M [ 25 FT-LB ]
INTAKE AND EXHAUST CROSSHEAD LOCK NUT	N/A	WITHOUT JACOBS® BRAKE (WITH ADAPTER) 1. 40 N•M [ 30 FT-LB ]
INTAKE AND EXHAUST CROSSHEAD LOCK NUT	N/A	WITH JACOBS® BRAKE (WITH ADAPTER) 1. 40 N•M [ 30 FT-LB ]
INTAKE AND EXHAUST CROSSHEAD LOCK NUT	N/A	WITH JACOBS® BRAKE (WITH ADAPTER) 1. 45 N•M [ 33 FT-LB ]
VALVE ADJUSTMENTS (EXHAUST VALVE)	N/A	0.69 MM [0.027 IN]
VALVE ADJUSTMENTS (INTAKE VALVE)	N/A	0.36 MM [0.014 IN]
VALVE RECHECK LIMITS (EXHAUST)	N/A	MINIMUM OF 0.610 MM [0.024 IN]
VALVE RECHECK LIMITS (EXHAUST)	N/A	MINIMUM OF 0.762 MM [0.030 IN]
VALVE RECHECK LIMITS (INTAKE)	N/A	MINIMUM OF 0.279 MM [0.011 IN]
VALVE RECHECK LIMITS (INTAKE)	N/A	MINIMUM OF 0.432 MM [0.017 IN]
VALVE LASH CLEARANCE – VALVE LASH SPECIFICATION FOR TIGHTENING ADJUSTING SCREWS (TORQUE WRENCH METHOD)	N/A	TIGHTEN THE ADJUSTING SCREW TO 0.68 N•M [6 IN-LB] AGAINST THE FEELER GUAGE
VALVE LASH CLEARANCE – VALVE LASH SPECIFICATION FOR TIGHTENING ADJUSTING SCREWS (TORQUE WRENCH METHOD W/ ADAPTER)	N/A	45 N•M [ 33 FT-LB ]
VALVE LASH CLEARANCE – VALVE LASH SPECIFICATION FOR TIGHTENING ADJUSTING SCREWS (TORQUE WRENCH METHOD W/O ADAPTER)	N/A	60 N•M [ 44 FT-LB ]
VALVE LASH CLEARANCE – VALVE LASH SPECIFICATION FOR TIGHTENING ADJUSTING SCREWS (FEEL METHOD) *	N/A	TURN THE ADJUSTING SCREW UNTIL THE LEVER TOUCHES THE FEELER GAUGE USING A NUT DRIVER
VALVE LASH CLEARANCE – VALVE LASH SPECIFICATION FOR TIGHTENING LOCK NUT W/ TORQUE WRENCH ADAPTER	N/A	1. 45 N•M [ 33 FT-LB ]
VALVE LASH CLEARANCE – VALVE LASH SPECIFICATION FOR TIGHTENING LOCK NUT W/O TORQUE WRENCH ADAPTER	N/A	1. 60 N•M [ 44 FT-LB ]

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* NOTE: WHEN USING THE FEEL METHOD, attempt to insert a feeler gauge 0.03 mm [0.001 in] thicker than used for setting the valve lash.

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The valve lash is not correct if the feeler gauge will fit.

Repeat the adjustment process until the clearance is correct on both the intake and exhaust valves.

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Torque Specs For The Cummins KTA19 Marine Engine Crankshaft 

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PART/MATERIAL/COLOR

LENGTH

TORQUE VALUE IN NM [ FT-LB ]

CRANKSHAFT BEARING CAPSCREWS

N/A

1. 265 N•M [ 195 FT-LB ] 2. 605 N•M [ 445 FT-LB ] 3. LOOSEN 4. 265 N•M [ 195 FT-LB ] 5. 605 N•M [ 445 FT-LB ] *

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* NOTE: Use the following steps and tighten the cap-screws in the sequence shown in the graphic.

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Crankshaft & related components for Cummins KTA19 Marine Engine

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PART/MATERIAL/COLOR

LENGTH

TORQUE VALUE IN NM [ FT-LB ]

CRANKSHAFT COUNTERWEIGHT CAPSCREWS

N/A

142 N•M [ 105 FT-LB ]

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Torque Specs for Cummins KTA19 Marine Engine Cam Follower

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Pin for Cummins Injector Cam Follower roller 

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Cummins Cam Follower Cover Gasket

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PART/MATERIAL/COLOR

LENGTH

TORQUE VALUE IN NM [ FT-LB ]

CAM FOLLOWER SLOTTED CAPSCREWS

N/A

39 TO 42 N•M [29 TO 31 FT-LB]

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Torque Specs For The Cummins KTA19 Marine Engine Piston and Connecting Rod Assembly 

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PART/MATERIAL/COLOR

LENGTH

TORQUE VALUE IN NM [ FT-LB ]

CONNECTING ROD CAPSCREWS

N/A

1. 102 N•M [ 75 FT-LB ] 2. 197 N•M [ 145 FT-LB ] 3. 292 N•M [ 215 FT-LB ] 4. 366 N•M [ 270 FT-LB ] 5. LOOSEN BOTH CAPCSCREWS TO REMOVE ALL TENSION. 6. 102 N•M [ 75 FT-LB ] 7. 149 N•M [ 110 FT-LB ] PLUS 90° TO ACHIEVE CORRECT BOLT STRETCH.

Connecting Rod & related components for Cummins KTA19 Marine Engine

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Torque Specs for KTA19 Marine Engine Lubricating Oil Pan Adapter

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PART/MATERIAL/COLOR

LENGTH

TORQUE VALUE IN NM [ FT-LB ]

OIL PAN ADAPTER CAPSCREWS

N/A

1. 15 N•M [ 133 IN-LB ] 2. 25 N•M [ 221 IN-LB ] 3. 40 N•M [ 30 FT-LB ] 4. 48 N•M [ 35 FT-LB ]

PART/MATERIAL/COLOR

LENGTH

TORQUE VALUE IN NM [ FT-LB ]

OIL PAN ADAPTER CAPSCREWS (LOCATED IN THE CENTER OF FLYWHEEL HOUSING)

N/A

1. 25 N•M [ 221 IN-LB ] 2. 40 N•M [ 30 FT-LB ] 3. 48 N•M [ 35 FT-LB ]

PART/MATERIAL/COLOR

LENGTH

TORQUE VALUE IN NM [ FT-LB ]

OIL PAN ADAPTER CAPSCREWS

N/A

65 N•M [ 48 FT-LB ]

PART/MATERIAL/COLOR

LENGTH

TORQUE VALUE IN NM [ FT-LB ]

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 Torque Specs For The Cummins KTA19 Marine Engine Oil Cooler Cover

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PART/MATERIAL/COLOR

LENGTH

TORQUE VALUE IN NM [ FT-LB ]

OIL COOLER COVER CAPSCREWS

N/A

45 N•M [ 33 FT-LB ]

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Oil Cooler & related components for Cummins KTA19 Marine Engine

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ROCKER LEVER ASSEMBLY

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PART/MATERIAL/COLOR

LENGTH

TORQUE VALUE IN NM [ FT-LB ]

ROCKER LEVER ASSEMBLY CAPSCREWS	N/A	90 N•M [ 66 FT-LB ]
ROCKER LEVER ASSEMBLY CAPSCREWS	N/A	225 N•M [ 166 FT-LB ]

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Parts Catalog for Cummins KTA19 Marine Engine

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At Diesel Pro Power, we provide a comprehensive range of aftermarket parts for the Cummins KTA19 engine, designed to enhance performance, reliability, and longevity. Our catalog includes:

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• Overhaul Kits for Cummins KTA19 : Complete kits to refresh your engine, restoring power and efficiency and extending its lifespan.
• Fresh Water Pumps for Cummins KTA19 : These pumps keep your engine cool by circulating fresh water through the cooling system, crucial for long hours of operation.
• Raw Water Pumps for Cummins KTA19 : Essential for marine applications, these pumps draw seawater into the system to regulate engine temperature, preventing thermal damage.
• Cylinder Heads for Cummins KTA19 : Engineered to handle high pressures, these cylinder heads support efficient combustion and reliable power output.
• Fuel Pumps for Cummins KTA19 : Fuel pumps ensure optimal combustion by delivering fuel at the correct pressure, enhancing engine smoothness and fuel economy.
• Aftercooler For Cummins KTA19 : Aftercooler is used to cool the compressed air before it enters the engine’s combustion chamber, enhancing combustion efficiency and improving overall engine performance by reducing the temperature of the air intake.
• Injectors for Cummins KTA19 : Precision-engineered injectors ensure fuel is delivered correctly to maximize power, efficiency, and reduce emissions.
• Oil Coolers & Oil Lubricating Pump for Cummins KTA19 : These components help maintain oil viscosity by cooling the oil and pumping it through the engine for lubrication.
• Turbos for Cummins KTA19 : Designed to boost airflow into the combustion chamber, turbos enhance power and efficiency, ideal for heavy-duty applications.
• Crankshafts for Cummins KTA19 : Our crankshafts convert engine power into rotational motion, ensuring reliable performance under demanding conditions.
• Camshafts for Cummins KTA19 : These control the engine’s valve timing, crucial for efficient combustion and maintaining optimal performance.
• Gaskets for Cummins KTA19 : High-quality gaskets prevent leaks, maintain compression, and ensure overall engine efficiency and durability.