1. Remove the covers for the valve mechanisms.
Refer to the Disassembly and Assembly Manual,
“Valve Cover - Remove and Install” for the
procedure.
2. Mark the tops of the valve rotators with a
permanent marker. Note the position of the marks.
3. Install the covers for the valve mechanisms. Refer
to the Disassembly and Assembly Manual, “Valve
Cover - Remove and Install” for the procedure.
4. Start the engine. Operate the engine for 5 minutes.
Stop the engine.
5. Remove the covers for the valve mechanisms.
Refer to the Disassembly and Assembly Manual,
“Valve Cover - Remove and Install” for the
procedure.
6. Observe the position of the marks that are on the
valve rotators.
7. If any valve fails to rotate, consult your Perkins
distributor.
8. Install the covers for the valve mechanisms. Refer
to the Disassembly and Assembly Manual, “Valve
Cover - Remove and Install” for the procedure.
i06229732
Fan Drive Bearing - Replace
1. Remove the fan drive bearings. Refer to
Disassembly and Assembly, “Fan Drive - Remove”
and Disassembly and Assembly, “Fan Drive -
Disassemble”.
2. Inspect the bearing housings wear or damage. If
necessary, replace the fan drive housing.
3. Install replacement fan drive bearings. Refer to
Disassembly and Assembly, “Fan Drive -
Assemble” and .Disassembly and Assembly, “Fan
Drive - Install”.
i10083133
Fuel System - Prime
Fuel leaked or spilled onto hot surfaces or electri-
cal components can cause a fire. To help prevent
possible injury, turn the start switch off when
changing fuel filters or water separator elements.
Clean up fuel spills immediately.
Refer to Operation and Maintenance Manual,
“General Hazard Information” before any
adjustments or repairs are performed
If necessary, perform minor adjustments. Repair any
leaks from the fuel system and from the cooling,
lubrication, or air systems. Ensure that all
adjustments and repairs are performed by authorized
personnel that have had the correct training.
The fuel system should be primed under the following
conditions:
• The fuel tank is empty or the fuel tank has been
partially drained.
• The engine has been in storage.
• The fuel filter has been replaced.
• The pressure fuel lines have been disconnected.
2806A and 2806C Fuel Priming
Illustration 63 g06109984
Typical example
1. Ensure that the key switch is in the OFF position.
Ensure that the fuel tank is full of clean diesel fuel.
Check that the fuel supply valve (if equipped) is in
the ON position.
2. Unlock the fuel priming pump handle (1). Turn
handle counter-clockwise. Operate the fuel
priming pump handle until strong pressure is felt.
3. When strong pressure can be felt, press in the fuel
priming pump handle (1) and lock the handle into
the fuel pump body (2). To lock the handle, turn
handle clockwise.
SEBU9074-06
99
Maintenance Section
Fan Drive Bearing - Replace
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