Finding Top Center Position For No. 1 Piston - Perkins 1103 Series Workshop Manual

3. If excessive air is seen in the sight gauge in the
fuel return line, install a second sight gauge at
the inlet to the fuel transfer pump. If a second
sight gauge is not available, move the sight
gauge from the fuel return line and install the
sight gauge at the inlet to the fuel transfer pump.
Observe the fuel flow during engine cranking.
Look for air bubbles in the fuel. If the engine
starts, check for air in the fuel at varying engine
speeds.
If excessive air is not seen at the inlet to the fuel
transfer pump, the air is entering the system after
the fuel transfer pump. Refer to the Testing and
Adjusting, " Fuel System - Prime
If excessive air is seen at the inlet to the fuel
transfer pump, air is entering through the suction
side of the fuel system.
To avoid personal injury, always wear eye and face
protection when using pressurized air.
NOTICE
To avoid damage, do not use more than 55 kPa (8 psi)
to pressurize the fuel tank.
4. Pressurize the fuel tank to 35 kPa (5 psi). Do not
use more than 55 kPa (8 psi) in order to avoid
damage to the fuel tank. Check for leaks in the
fuel lines between the fuel tank and the fuel
transfer pump. Repair any leaks that are found.
Check the fuel pressure in order to ensure that
the fuel transfer pump is operating properly. For
information about checking the fuel pressure, see
Testing and Adjusting,
- Test " .
5. If the source of the air is not found, disconnect
the supply line from the fuel tank and connect an
external fuel supply to the inlet of the fuel transfer
pump. If this corrects the problem, repair the fuel
tank or the stand pipe in the fuel tank.
" .
" Fuel System Pressure
Testing and Adjusting Section
Finding Top Center Position
for No. 1 Piston
Table 1
Required Tools
Part
Part Description
Number
27610211 Crankshaft timing pin
Camshaft timing pin
27610212
Illustration 17
(1) Hole for crankshaft pin
(2) Hole for camshaft pin
1. Remove the valve mechanism cover, the glow
plugs, and the cover for the front housing.
Note: The crankshaft timing pin can be inserted with
the crankshaft pulley still on the engine.
2. Rotate the crankshaft in the normal direction
of the engine until the inlet valve of the No. 4
cylinder has just opened and the exhaust valve
of the No. 4 cylinder has not completely closed.
3. Carefully rotate the crankshaft in the normal
direction of the engine in order to align the hole
in the crankshaft with the hole in the cylinder
block and the timing case. Insert the
Crankshaft Timing Pin fully into the hole in the
crankshaft web.
4. Insert the 27610212
through the hole in the camshaft gear and into
the body of the timing case. The engine is set at
the top center position for No. 1 piston.
i01893344
Qty
g00923080
27610211
Camshaft Timing Pin
23
1
1