12124A 3 Mercury PLATE ASSEMBLY (200)

Checking the Mark for the Engine Timing for the Bosch EPVE Fuel Injection Pumps
Table 1
Required Tools
Part Number Part Description Qty
9U-6188 Timing Fixture Group 1
Set the piston of No. 1 cylinder to top center on the compression stroke.
Remove the fuel injection pump and the gasket.
Illustration 1 g00321405
Adapter from the 9U-6188 Timing Fixture Group
Align the key that is in the adapter with the keyway that is in the gear of the fuel injection pump. Install the adapter to the gear. Ensure that the adapter is against the rear face of the timing case. Secure the adapter to the gear with the nut which is supplied with the adapter.
Illustration 2 g00321407
Engine timing tool from the 9U-6188 Timing Fixture Group
(1) Pointer
(2) Screw
(3) Shaft
(4) Screw
(5) Screw
Loosen screw (5). Set the engine timing tool to the correct engine check angle. Refer to the Specifications, "Fuel Injection Pump" for the correct engine check angle. Tighten screw (5). Loosen screw (4). Install splined shaft (3) into the engine timing tool. Loosen screw (2). Install pointer (1) and tighten screw (2).
Install the splined shaft of the engine timing tool into the adapter. Slide the engine timing tool along the splined shaft until the engine timing tool rests against the adapter. Tighten screw (4).
Loosen screw (2). Slide the pointer forward until the flat face rests against the rear face of the timing case. Tighten screw (2). If the mark on the timing case is correct, the mark will align with the top edge of pointer (1). If the mark is not correct, remove the engine timing tool and remove the mark on the timing case. Install the engine timing tool. Ensure that the pointer rests against the timing case. Make a new mark on the timing case. Make the new mark along the top of the straight edge of the pointer.
Remove the engine timing tool and the adapter.
Install a new gasket on the fuel injection pump. Install the fuel injection pump on the engine.
Set the valve lash for the inlet valve of the No. 1 cylinder. Refer to Specifications, "Cylinder Head Valves" for the correct valve lash. Install the valve mechanism cover.
Purge the air in the fuel system. Refer to Testing and Adjusting, "Fuel System - Prime" for the procedure. Timing the Bosch Fuel Injection Pump
Table 2
Required Tools
Part Number Part Description Qty
9U-6188 Timing Fixture Group 1
6V-3075 Dial Indicator 1
8S-3675 Indicator contact point 1
192-3331 Timing Gauge (Fuel Injection Pump) 1
Illustration 3 g00559480
(1) Support bracket
(2) Fuel injection pump
(A) Fuel outlet
(F) Fuel outlet
Use support bracket (1) to hold fuel injection pump (2) in a vise. The key on the fuel injection pump shaft must be in position between fuel outlet (A) and fuel outlet (F).
Illustration 4 g00559484
(3) Locking bolt
Loosen locking bolt (3).
Illustration 5 g00559487
(4) The dial indicator, the timing gauge adapter, and indicator contact point (not shown)
Remove the plug and the washer from the rear of the fuel injection pump. Install the following tools: the timing gauge adapter, the dial indicator and indicator contact point (not shown) (4). Set the dial indicator to register approximately 3 mm (0.12 inch) in travel.
Illustration 6 g00559492
(5) Drive adapter
Install the drive adapter (5) on the drive shaft of the fuel pump. Secure the adapter to the shaft with the nut of the drive gear (not shown).
Illustration 7 g00760943
(6) Adapter
(7) Timing tool
(8) Locking screw
(9) Pointer
(10) Locking screw
Install timing tool (7) on drive adapter (5). Install adapter (6) on timing tool (7). Adapter (6) is used to rotate timing tool (7). Adapter (6) also rotates the drive shaft of the fuel injection pump. To rotate the adapter, a handle must be made. Use three set screws in adapter (6) in order to connect the handle to adapter (6).
Adjust the automatic timing advance unit (if equipped). The automatic timing advance