Cummins/Onan — Valve and Injector Adjustment - PT (type D)
Adjustments · Valve train
From a Cummins/Onan owner's manual covering: K 19, K19, K19 Series, KTA19, KTTA19, Kt19. Check it applies to your exact model before use.
Applies to: Cummins/Onan K 19, Cummins/Onan Kt19, Cummins/Onan K19 Series (KT19/KTA19/KTTA19) engine, Cummins/Onan KT19 engine, Cummins/Onan KTA19 engine
Before you start
- Injector plunger is under spring tension. Do not allow tool to slip.
Procedure
- Steam clean engine.
- Remove rocker lever covers.
- Rotate engine to A mark alignment.
- Determine cylinder with valves closed.
- Adjust crossheads before valves.
- Adjust intake valve to 0.36 mm and exhaust valve to 0.69 mm.
- Adjust PT (type D) injector travel to 7.72 mm using dial indicator.
- Tighten locknuts to specified torque.
- Repeat for all cylinders per firing order.
Tools required
- 3822575 Injector and Valve Adjustment Kit Amazon
- 3822574 Rocker Lever Actuator Amazon
- 3376592 Inch Pound Torque Wrench Amazon
- ST-669 Torque Wrench Adapter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Intake 0.36 mm
- Exhaust 0.69 mm
- PTD injector 7.72 mm
- Locknut with adapter 45 Nm [35 ft-lb]
- Locknut without adapter 60 Nm [45 ft-lb]
Full service-parts list: Cummins/Onan K 19 →, Cummins/Onan Kt19 →
Source: Cummins/Onan owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.