To dismantle

Operation 11-6

1  Clean the outside surfaces of the fuel lift pump.

2  Remove the lift pump from the high-pressure pump, see Operation 11-5.

3  Remove the push rod (A12).

4  Remove the end nut (A10).

5  Remove and discard the ’O’ ring (A9) from the end nut.

6  Remove and discard the small ’O’ ring (A11) from inside the end nut.

7  Remove the plunger (A8) the suction valve (A7) the spring seat washer (A6) the spring (A5) and the second

spring seat washer (A4) from the pump body (A1).

8  Remove the delivery valve assembly (A3) from the body.

9  Remove and discard the ’O’ ring (A2) from the delivery valve assembly.

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To assemble

Operation 11-7

1  Thoroughly clean inside the body of the lift pump and ensure that the passages in the body are not restricted.

2  Carefully clean the valves in clean diesel fuel. Inspect each valve for damage to the valve spring and the

valve plate. If there is damage, renew the valve.

3  Fit a spring seat washer (A4) in position in the pump body (A1). Ensure that the flat face of the washer is

toward the bottom of the body.

4  Fit the spring (A5) on the spring seat washer (A4) and the other spring seat washer (A6) on the spring.

5  Fit the suction valve (A7) in position on top of the valve seat washer. Ensure that the large diameter of the

valve is toward the spring seat washer.

6  Fit the plunger (A8) in position in the pump body over the valve and spring.

7  Renew the ’O’ ring (A11) that fits inside the end nut (A10) and renew the ’O’ ring (A9) on the outside of the

end nut.

8  Support the pump body, put the end nut in position on the plunger. Compress the spring and engage the

threads of the end nut with the threads in the pump body. Tighten the end nut to 42 Nm (31 lbf ft) 4,3 kgf m.

9  Fit the push rod (A12) in position in the end nut.

10  Fit a new ’O’ ring (A2) on the delivery valve assembly (A3).

11  Fit the delivery valve assembly to the fuel delivery pump and tighten to 42 Nm (31 lbf ft) 4,3 kgf m.

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To set the adjustment of the speed control

Operation 11-8

Special equipment is necessary to set the idle speed and the maximum no load speed. If further information

is required, contact the Service Department of Perkins Engines Company Limited at Peterborough.

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To eliminate air from the fuel system

Operation 11-9

If air enters the fuel system, it must be eliminated before the engine can be started.

Air can enter the system if:

l   The fuel tank is drained during normal operation.

l   The low-pressure fuel pipes are disconnected.

l   A part of the low-pressure fuel system leaks during engine operation.

In order to eliminate air from the fuel system, proceed as follows:

1  Loosen the vent plug (A1) on the top of the fuel filter head.

2  Operate the plunger of the fuel priming pump (A2) until fuel, free from air, comes from the filter vent point.

Tighten the vent plug.

3  Turn the start key to the “ON” position.

4  Operate the starter motor for intervals of 15 seconds until the engine starts. If the engine runs correctly for

a short time and then stops or runs roughly, check for air in the fuel system. If there is air in the fuel system,

there is probably a leak in the low pressure system. Turn the start key to the “OFF” position to stop the engine.

Correct the leak and repeat the procedure.

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Peregrine EDi and 1300 Series EDi

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Cooling system

12

General description

Coolant from the bottom of the radiator passes along a channel in the timing case to the centrifugal coolant

pump, which is fitted on the front of the timing case. The pump is belt driven and assists the flow of the coolant

through the system. The coolant passes along another channel in the timing case to a passage in the cylinder

block. An equal amount of coolant passes to the bottom of each cylinder liner at an angle. This angle causes

the coolant to move around and up the cylinder liners. The movement of the coolant helps to cool the cylinders.

The coolant leaves the cylinder head at the front and passes into the thermostat housing. If the thermostat is

closed, the coolant goes directly through a by-pass to the inlet side of the coolant pump; if the thermostat is

open, the by-pass is closed and the coolant passes to the top of the radiator.

From the cylinder block, coolant also passes through the oil cooler to the inlet side of the coolant pump.

From the cylinder block, coolant also passes through the air compressor, if one is fitted.

A coolant filter is fitted to the rear of the timing case. Ports in the coolant channels in the timing case allow 3%

to 10% of the coolant to pass through the filter. The filter contains a special inhibitor that helps to prevent

corrosion in the cooling system.

A tensioner pulley automatically maintains the correct tension of the drive belt.

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Cooling system flow diagram

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Coolant filter

To renew the canister of the coolant filter / inhibitor

Operation 12-1

Warning! Do not remove the canister while the engine is still hot and under pressure because dangerous hot

fluid can be discharged.

Caution: The canister contains a corrosion inhibitor that is circulated around the cooling system as the coolant

passes through the canister. It is important that only the genuine correct Perkins canister is used.

1  When the engine has cooled, remove the radiator filler cap to release the system pressure.

Notes:

l   Up to engine number N117199, when the system pressure is released, automatic check valves in the filter

head will close to prevent the loss of coolant when the filter canister is removed.

l   From engine number N117199, a manual valve is fitted and is shown open (A2). When the system pressure

is released, the valve lever must be turned counter-clockwise to the closed position (A1) to prevent the loss

of coolant when the filter canister is removed.

2  Thoroughly clean the outside surfaces of the coolant filter canister.

3  Use a strap wrench or similar tool to loosen the filter canister and remove the canister.

4  Ensure that the threaded adaptor (B2) is secure in the filter head and that the inside of the head is clean.

5  Lubricate lightly the seal (B1) on top of the new filter canister with clean engine coolant. Fit the new canister

to the filter head and tighten by hand. Do not overtighten the canister.

6  Turn the lever (A2) 90° clockwise to open the valve. This will allow the flow of coolant through the canister.

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Thermostat

To remove and to fit

Operation 12-2

To remove

1  Drain the cooling system so that the coolant level is below the thermostat position and disconnect the top

hose from the water outlet connection.

2  Release the setscrews and remove the thermostat assembly (A). Discard the ’O’ ring (A1).

To fit

1  Ensure that the joint faces of the thermostat assembly and the outlet are clean.

2  Fit a new ’O’ ring to the thermostat assembly and insert the thermostat assembly in position on the cylinder

head. Fit and tighten the setscrews.

3  Connect the top hose and fill the cooling system.

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To test

Operation 12-3

1  Hang the thermostat in a suitable container filled with water.

2  Heat the water gradually. Use a thermometer to check the temperature at which the valve starts to open and

at which it is fully open. The correct temperatures are given in the relevant Data and dimensions for the

"Thermostat" on page 18.

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