Fuel Pressure Test
(8) Unfiltered fuel pressure tap. (9) Fuel filter base. (110)
Filtered fuel pressure tap.
To check the unfiltered fuel pressure, remove the plug from
fuel pressure tap (8). Install the adapter, seal and 1U5470
Engine Pressure Group to fuel pressure tap (8) to obtain
transfer pump pressure. Operate the engine. To check in the
main gallery for pressure, remove the plug from fuel pressure
tap (10). Install the adapter, seal and 1U5470 Engine
Pressure Group to fuel pressure tap (10). Operate the engine.
Make sure the fuel filter is clean before checking
fuel pressure. A restricted fuel filter will cause
lower fuel pressure at tap (10) than at tap (8).
Finding Top Center Position For No. 1 Piston
Bolt (Part Of 1U6675 Injector Spring
Compressor used in 9U7305/1U6680
Timing Bolt Location (Typical Example)
(1) Timing bolt. (2) Timing hole. (3) Flywheel housing.
Depending on engine application, the timing hole
(2) is located at either the left front face or right
front face of the flywheel housing.
Remove plug from timing hole (2) on front of flywheel
Turn the engine with the four large bolts on the
front of the crankshaft. Do not use the eight small
bolts on the front of the crankshaft pulley.
Put 8T0292 Bolt (1) in hole. Now turn the engine
flywheel counterclockwise until the timing bolt engages
with the threaded hole in the flywheel.
If the flywheel is turned beyond the point that the
timing bolt engages in the threaded hole, the
flywheel must be turned clockwise approximately
counterclockwise until the timing bolt engages
with the threaded hole. The reason for this
procedure is to make sure the play is removed
from the gears when the No. 1 piston is put on top
Remove the valve cover.