Perkins 2806F Engine Turbocharger-Remove

       This article mainly introduces  Perkins 2806F Engine   Turbocharger-Remove

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NOTICE Care must be taken to ensure that fluids are con-
tained during performance of inspection, mainte-
nance, testing, adjusting and repair of the product.
Be prepared to collect the fluid with suitable contain-
ers before opening any compartment or disassem-
bling any component containing fluids.
Dispose of all fluids according to local regulations and mandates.
NOTICE Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.

1. Disconnect inlet hose(6) from the inlet of turbocharger(7). Refer to Disassembly and Assembly, Air Cleaner Housing-Remove and Install for the correct procedure.
2. Loosen V-band clamp(1) and disconnect elbow connection(3) from turbocharger(7). Remove O-
ring seal(2)(not shown).
3. Loosen V-band clamp (4) and disconnect exhaust connection(5) from turbocharger(7).

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1. Remove Allen head bolts(9) from tube assembly
(8). Position the tube assembly away from turbocharger(7). Remove gasket(10)(not shown).
2. Disconnect tube assembly (12) from wastegate actuator(11). Position the tube assembly away from turbocharger(7).
3. Remove Allen head bolts(14) from tube assembly
(15).
4. Attach a suitable lifting device to turbocharger(7).
The weight of the turbocharger is approximately
30kg(66Ib).
5. Remove nuts(18) from turbocharger(7).
6. Use the lifting device to remove turbocharger(7)
from the exhaust manifold and coupling (16).
Remove gasket(17)(not shown).
7. Remove gasket(13)(not shown).
8. If necessary, remove studs(19) from exhaust manifold(16).

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9. If necessary, follow Step 9.a through Step 9. cto remove tube assembly (8) and tube assembly
(15).
a. Remove bolts (21) fromtube assembly(15).
Remove the tube assembly. Remove O-ring seal (22)(not shown).
b. Remove bolt(20)(not shown) from the clip for tube assembly(8).
c. Disconnect tube nut(24) for tube assembly(8).
Remove the tube assembly. Remove O-ring seal(23)(not shown).

 

Introduces Perkins 2806F Engine Air Cleaner-Remove and Install

   This article mainly Introduces Perkins 2806F Engine Air Cleaner-Remove and Install

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Removal Procedure
.NOTICE Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.

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1. For the location of the assembly of air cleaner(5).
Refer to Original Equipment Manufacturer (OEM)
for the correct location.
2. Loosen hose clamp(11) for hose assembly(12).
3. Attach a suitable lifting device to support the weight of air cleaner assembly (5). The weight of the air cleaner is approximately 23kg (51 lb).
4. Remove bolts (6) from air cleaner(5).
5. Use the suitable lifting device to remove air cleaner assembly(7) from the OEM bracket and the turbocharger.
6. If necessary, follow Step 6.a through Step 6.f to disassemble the assembly of air cleaner(5).
a. Position air cleaner (5) onto a suitable support.
b. Loosen clamp(2) and remove pre-cleaner(1)
from expansion adapter(3).
c. Loosen clamp(4) and remove expansion adapter(3).
d. Loosen hose clamps(11) for hose assembly
(10). Remove the hose assembly from tube assembly(9).
e. If necessary, remove indicator (10) from tube assembly(9).
f. Loosen hose clamps(7) for hose assembly(8). Remove the hose assembly from air cleaner(5)
and tube assembly(9).

Installation Procedure         

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2. If necessary, follow Step 2.a through Step 2. ito assemble the assembly of air cleaner(5).
a. Position air cleaner(5) onto a suitable support.
b. Apply Tooling (A) to hose assembly(8) and hose assembly(12).
c. Install hose assembly(8) onto air cleaner(5).
Ensure hose clamps (7) are correctly orientated.d. Install tube assembly (9) to hose assembly(8).
Ensure that the tube assembly is correctly orientated. Tighten the hose clamps to a torque of 8N-m(71lb in).
e. Installindicator(10) to tube assembly(9).
Securely tighten the indicator.
f. Install hose assembly(10) to tube assembly(9).
Ensure hose clamps(11) are correcty orientated. Tighten the hose clamp to a torque of 8N-m(71ib in).
g. Install expansion adapter (3) onto air cleaner
(5). Ensure clamp(4) is correctly orientated and seated onto the air cleaner. Securely tighten the clamp.
h. Install pre-cleaner(1) to expansion adapter(3).
Securely tighten clamp(2).
i. If air cleaner(5) has been disassembled, hose clamps(11) will need tightening after the air cleaner assembly has been installed.
3. Attach a suitable lifting device to support the weight of air cleaner assembly(5). The weight of the air cleaner is approximately 23kg(51 lb).
4. Use the suitable lifting device to install air cleaner assembly(7) onto the OEM bracket and the turbocharger.
5. Install bolts (6) to air cleaner(5) and the OEM bracket. Tighten the bolts, refer to the OEM for the correct tightening value.
6. Tighten hose clamp(11) for hose assembly(12) to a torque of8 N-m (71 lb in).
7. If necessary, replace air cleaner element for air cleaner assembly(5). Refer to Operation and Maintenance Manual, Engine Air Cleaner Element
-Replace for the correct procedure.

Introduces Install of the Isuzu Engine 4JJ1 Euro 4 N Series common Rail

     This article mainly introduces Install
of the Isuzu   Engine 4JJ1 Euro 4 N Series common Rail

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  1. Install the space rubber, common rail bracket, and common rail, and tighten them at the specified torque.
Tightening torque:25 N-m(2.5kgm/18 b-t)
2. Install the injection pipe and tighten the sleeve nut
(1) at the specified torque.
Tightening torque:25 Nm (2.5 kgm/18 lbt)

3. Install the harness connector of the fuel pressure sensor.
4. Connect the fuel hose(1).

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5. Install the fuel feed pipe(1) and tighten the sleeve nut at the specified torque.
Tightening torque:44 N.m(4.5kgm/33 bt)

6. Install the fuel leak-off pipe(1), and tighten the ayebolt at he specied torque. aC gml e Tightening torque:10 N-m(1.0kg-m/87 lb-in)

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7. Install the engine oil level gauge and guide tube, and tighten the fixing bolt at the specified torque.
· Apply engine oil to the O-ring of the guide tube.
Tightening torque:25 N-m(2.5kg-m/18 ib-ft)
8. Install the left side noise cover.
9. Install the dropping register harness connector.
10. Install the air duct.
NOTE: Firmly insert the hose without any twisting or misalignment, and tighten the clamp to the specified torque.
. Install the air duct between air cleaner and turbocharger.
· Use a new hose clamp, align it with the marking.
Tightening torque Air cleaner side:8 N-m(0.8 kg-m/69 lb-in)
Turbocharger side:6.4 N-m (0.65 kg-m/56.4 lb-in)
NORMA W3 Clamp
8 Nm (0.8 kgm/69 b-in)
NORMA W1 Clamp
11. Install the air intake duct and hose.
List of Tightening Torques

NOTE: Firmly insert the hose without any twisting or misalignment, and tighten the clamp to the specified torque.
· Install the duct and hose between the intake throttle valve and intercooler.
· Use a new hose clamp, align it with the marking Tightening torque:8N-m (0.8kg-m/69 lb in)
12. Connect the connector of the boost sensor.

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Introduces Removaland of the Isuzu Engine 4JJ1 Euro 4 N Series common Rail

 

         This article mainly introduces Removaland  of the Isuzu   Engine 4JJ1 Euro 4 N Series common Rail

Legend
1. Injection pipe(#1-#4)5. Common rail(Fuel rail) bracket
2. Fuel feed pipe
3. Injection pipe clip7. Fuel leak-off pipe
4. Common rail(Fuel rail)
Including the inside of the injector, the holes and gaps that are the fuel paths for the fuel system have anextremely precise finish. Therefore, because there is the possibility of damage if foreign material becomes mixed in, cover the cap after removing parts, etc. to prevent the entry of foreign material.
Removal
1. Disconnect the air intake duct and hose.
· Disconnect the boost sensor connector (1), and remove the air intake duct together with the hose.

2. Kemove the air duct(air cleaner-turbocharger alr duct).
3. Remove the left side noise cover.
· Remove the harness connector of the dropping register, and remove the noise cover.
4. Remove the harness connector of the fuel pressure sensor(1).

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5. Remove the engine oil level gauge and guide tube.
6. Remove the leak-off pipe(1).

NOTE:
Do not reuse the leak-of pipe gasket

7. Remove the fuel feed pipe(1).

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NOTE: Do not reuse the fuel feed pipe
8. Remove the fuel hose(1).
· Keep the disconnected fuel hose in clean, so that dust should not adhere.

9. Remove the sleeve nut(1) of the injection pipe from the common rail.

NOTE: Do not reuse the injection pipe
10.Remove the common rail and the common rail bracket.
NOTE:
·Do not hold the pressure limiter or pressure sensor.
Make sure to hold the common rail unit.
·Be careful not to damage the pressure sensor connector.

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Legend
1. Common rail(Fuel rail)
2. Common rail(Fuel rail) bracket
3. Space rubber
4. Pressure sensor
5. Pressure limiter

Introduces Doosan DL220 The Shut-Off Valve Theory of Operation

 This page briefly introduces Doosan DL220 the shut-off valve theory of operation

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Cushion Valve Operation Function The cushion valve absorbs any excessive peak pressure that maybe generated during initial movement of the steering wheel or during a change in steering direction. The cushion valve alsoprevents excessive high-pressure and shock that can result from steering load inertia.
Working Principle If a high-pressure oil is fed back to port R, it pushes spring(3)
and opens poppet(2). This operation directs the high-pressure oil to port L through the center hole in spool(12) and the check valve poppet in port L part. At the same time, oil reaches thepressure room of the plug through orifice (8). This operation closes the passage from port R to port L. This releases the pressure and prevents machine shock by intercepting oil. If a low-pressure oil flows, the cushion operation is not necessary. It is due to the speed of closing spool(12) is faster than the speed of opening poppet (2), therefore, the cushion valve does not work.

 

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Doosan DL220BLOCK VALVE Theory of Operation

 

This article mainly introduces Doosan DL220BLOCK VALVE Theory of Operation

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 The block valve is made up of four bypass check valve C1.

Output from the steering pump passes through the priority valve that is part of the steering cylinder. See the hydraulic schematic.
(Figure 84). This flow then passes out of the steering cylinder and enters the block valve at port EF. This allows output from the steering pump to join flow from the main pump to supply the boom, bucket, and option control valves.

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