Disassembly of Perkins 2806F-E18TA Industrial Engine

 This article describes how to disassemble a Perkins 2806F-E18TA Industrial Engine

Perkins EST Diagnostic Adapter-High Quality

Fuel Priming Pump - Remove

and Install

Removal Procedure

1. Turn the fuel supply to the OFF position. 

 

2. Turn the battery disconnect switch to the OFF

position. 

 

3. For the correct location of the fuel priming pump

assembly. Refer to Original Equipment

Manufacturer (OEM) for the correct location.

 

 

 

 

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4. Remove fuel filter (9). Refer to Operation and

Maintenance Manual, Fuel System Primary Filter

(Water Separator) Element - Replace for the

correct procedure. 

 

5. Disconnect harness assembly (2), harness

assembly (3), and harness assembly (8).

 

6. Disconnect the OEM hose assemblies from the

connections (4) and connection (4a). Plug and cap

the connections and the hose assemblies.

Note: Make temporary marks on the hose

assemblies for installation purposes. 

 

7. Remove bolts (6) and washers (5) from fuel

priming pump base (1). Remove the assembly of

the fuel priming pump base. Support the weight of

the fuel priming pump base as the bolts are

removed.

 

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8. If necessary, follow Step 8.a through Step 8.c to

remove mounts (13), mounts (10), limiters (16),

limiter (11), and bracket (14) from fuel filter base

(1).

a. Remove mounts (13) from bracket (14).

Remove the bracket. 

 

b. Remove limiters (16) and mounts (17) and

mounts (15) from fuel priming pump (1).

 

c. Remove mount (10), limiter (11) and mount (12)

from fuel priming pump (1)

 

 

 

 

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9. If necessary, follow Step 9.a through Step 9.j to

disassemble the assembly of fuel filter base (1). 

 

a. Place the assembly of fuel filter base (1) in a

suitable support. 

 

b. Remove nut (21) and remove solenoid (22). 

 

c. Use a deep socket to remove valve (23).

Remove O-ring seal (24), O-ring seal (25), and

backing ring (26). 

 

d. Remove check valve (35). Remove O-ring seal

(30), O-ring seal (29), and backing ring (28) 

 

e. Remove bolts (27) from manifold (34). Remove

O-ring seal (33). 

 

f. Remove O-ring seal (19) and backing ring (20).

g. Make temporary marks on wiring harness (37)

for installation purposes. Remove locking nuts

(32). Remove electronic filter (31) and

disconnect the wiring harness from pump

assembly (43). 

 

h. Remove pump assembly (43) from fuel filter

base (1). Remove backing ring (40), seal (41),

backing ring (42), and seal (39). 

 

i. If necessary, remove circlip (36) and remove

wiring harness (37) from fuel filter base (1).

 

Remove O-ring seals (38). 

 

j. If necessary, remove plug (48) from fuel filter

base (1). Remove O-ring seal (47). Remove

spring (46), valve (45), and O-ring seal (44). 

 

If necessary, repeat Step 9.j to remove

remaining valve assembly (49).

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How to Calibrate the Valve seat of Yanmar 3TNV Series and 4TNV Series Engines

 This article introduces how to calibrate the valve seat of yanmar 3TNV series and 4TNV series engines

 For Yanmar Diesel Engine Agriculture Excavator Tractor Marine Generator Diagnostic tool

[NOTICE]

Always check the oil clearance between the valve and valve guide before correcting the valve seat.     If it exceeds the limit, replace the valve or valve guide first to make the clearance satisfy the standard. After correction, wash the valve and the cylinder head sufficiently with diesel oil to remove all grinding powder or compound.

1) If the seat surface is slightly roughened: perform

[A] and [B] below.

[A]: Lap the valve and seat with a mixture of valve compound and engine oil.

[B]: Lap with engine oil only.

2) If the seat is heavily roughened but the width is    almost normal, correct with a seat grinder or seat cutter first.   Then perform lapping [A] and [B].

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3) If the seat is heavily roughened and the width is   much enlarged, grind the seat inner surface with  a seat grinder whose center angle is 40。, then   grind the seat outer surface with a grinder whose center angle is 150。to make the seat width

match the standard.   Then perform seat

correction as described in 2), and then carry out lapping [A] and [B].

 

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