0328555 JOHNSON ORIFICE, High speed, #68C, 115 models

Illustration 1 g00707095
Front gear group (3114 Engine)
(1) Camshaft gear
(2) Timing marks
(3) Camshaft idler gear
(4) Crankshaft gear
(5) Idler gear
(6) Oil pump gear
Illustration 2 g00707096
Front gear group (3116 and 3126 Engines)
(1) Camshaft gear
(2) Timing marks
(3) Camshaft idler gear
(4) Crankshaft gear
(5) Idler gear
(6) Oil pump gear The basis for the correct fuel injection timing and the valve mechanism operation is determined by the alignment of the timing for the front gear group. Align timing marks (2) on camshaft idler gear (3) with the holes on camshaft gear (1) and crankshaft gear (4). This alignment is required in order to provide the correct relationship between the piston movement and the valve movement.Crankshaft Positions for Valve Lash Setting
Table 1
Valve Lash Setting For 3114, 3116, and 3126
Valves Dimension of Gauge
Inlet 0.38 0.08 mm (0.015 0.003 inch)
Exhaust 0.64 0.08 mm (0.025 0.003 inch)
Table 2
3114 Crankshaft Positions for Valve Lash Setting
The rotation of the crankshaft is viewed from the flywheel end.
Rotation Counterclockwise
Check and Adjust with No. 1 Piston On this Stroke.(1) Top Center Compression Stroke(2)
Injectors 3-4
Inlet Valves 1-2
Exhaust Valves 1-3
Check and Adjust with No. 1 Piston On this Stroke. Top Center Exhaust Stroke
Injectors 1-2
Inlet Valves 3-4
Exhaust Valves 2-4
Firing Order 1-3-4-2
(1) Refer to Testing and Adjusting, "Finding Top Center Position for No. 1 Piston" for more information.
(2) Put No. 1 Piston at the top center position. After the top center position is found and the adjustments have been made for the correct cylinders, remove the top center bolt. Turn the flywheel in a counterclockwise direction by 360 degrees. This puts No. 1 Piston at the top center position on the other stroke. Install the top center bolt in the flywheel and complete the adjustments for the cylinders that remain.
Illustration 3 g00689649
Cylinder and Valve Location for the 3114 Engine
(A) Exhaust valves
(B) Inlet valves Note: Check the crankshaft position with the No. 1 piston at the top center position. Refer to Testing and Adjusting, "Finding Top Center Position for No. 1 Piston" for more information. Note: Refer to Testing and Adjusting, "Engine Valve Lash - Inspect/Adjust" for more information in order to adjust the valves.
Table 3
3116 and 3126 Crankshaft Positions for Valve Lash Setting
The rotation of the crankshaft is viewed from the flywheel end.
Rotation Counterclockwise
Check and Adjust with No. 1 Piston On this Stroke.(1) Top Center Compression Stroke(2)
Injectors 3-5-6
Inlet Valves 1-2-4
Exhaust Valves 1-3-5
Check and Adjust with No. 1 Piston On this Stroke. Top Center Exhaust Stroke
Injectors 1-2-4
Inlet Valves 3-5-6
Exhaust Valves 2-4-6
Firing Order 1-5-3-6-2-4
(1) Refer to Testing and Adjusting, "Finding Top Center Position for No. 1 Piston" for more information.
(2) Put No. 1 Piston at the top center position. After the top center position is found and the adjustments have been made for the correct cylinders, remove the top center bolt. Turn the flywheel in a counterclockwise direction by 360 degrees. This puts No. 1 Piston at the top center position on the other stroke. Install the top center bolt in the flywheel and complete the adjustments for the cylinders that remain.
Illustration 4 g00581993
Cylinder and Valve Location for the 3116 and 3126 Engines
(A) Exhaust valves
(B) Inlet valves