Nozzle Pressure Shim 11 50 Mm

SPRAY TEST

Install nozzle to injection nozzle hand tester and bleed air from union nut.

Injection pressure. (1

Fig. 6-13

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Fig. 6-15
Nozzle Injector Tester Diesel

Pump the tester handle 50 - 60 times/minutes by hand. (2) Read injection starting pressure. Opening pressure New nozzle

115-125 kg/cm2 (1636-1778 psi) Reused nozzle

105- 125 kg/cm2 (1493-1778 psi)

1. Proper nozzle operation can be determined by the sound of snarl.

2. Adjust the injection starting pressure to 110 - 125 kg/cm2 (1565 - 1778 psi), if the reused nozzle was overhauled.

3. To adjust the injection pressure, change the shim on the top of pressure spring.

1. 20 shims are available, each varying in thickness by 0.05 mm (0.0020 in.) from 1.00 - 1.95 mm (0.0394 - 0.0768 in.).

2. Varying the adjusting shim thickness by 0.05 mm (0.0020 in.) changes the injection pressure by about 5 kg/cm2 (71 psi).

Spray patterns.

(1) Check the spray patterns, by pumping the tester handle 50 - 60 times/minutes by hand.

(2) Spray should spread evenly down the nozzle center line in 4° conical form.

(3) Place a white sheet of paper about 30 cm (12 in.) away from the nozzle to check if spray pattern is in circular form.

5. There should be no dripping after injection.

,6. Leakage test.

Apply 90 kg/cm2 (1,280 psi) of fuel pressure, and check for leaks at nozzle valve seat and retaining nut.

DISASSEMBLY

Disassemble in numerical order.

Nozzle Holder Retaining Nut

1. Nozzle Holder Retaining Nut

2. Adjusting Shim

3. Pressure Spring

4. Pressure Pin

5. Distance Piece

6. Injection Nozzle

Unscrew the nozzle holder retaining nut with SST [09268-46011 ] and [09268-46021 ].

Fig. 6-24

scraper.

with a cleaning

KM 4. Clean the nozz/P k , cleaning needle ^^ °nfice with

5. Remove the carbon on nozzle body exterior (except wrapping angle) with a brass brush.

6. Wash the nozzle in clean diesel fuel or light oil.

7. Perform the sinking test.

(1) Pull out the needle about half way from the body and then release.

(2) Needle should sink down into the body extremely smoothly by its own weight.

(3) Repeat this test rotating needle slightly after each test.

If the needle fails to sink smoothly at any position, replace both the needle and the body as a unit.

ASSEMBLY

Assemble in numerical order.

1. Injection Nozzle

2. Distance Piece

3. Pressure Pin

4. Pressure Spring

5. Adjusting Shim

6. Nozzle Holder Retaining Nut

1. Injection Nozzle

2. Distance Piece

3. Pressure Pin

4. Pressure Spring

5. Adjusting Shim

6. Nozzle Holder Retaining Nut

Tighten the retaining nut with SST [09268 -46011] and [09268-46021].

After assembling the injection nozzle, perform the spray test and adjust if necessary.

INSTALLATION

Install in numerical order.

Injector Nozzle Seats

1. Injection Nozzle Seat Gasket

2. Injection Nozzle Seat

3. Injection Nozzle Holder

4. Leakage Pipe

5. Injection Pipe

Upward

Upward

jV Note the orientation of the nozzle seat gasket as shown in the figure.

Tighten the nozzle holder with SST[09268 -46011].

After installing, bleed out the air.

Tighten the nozzle holder with SST[09268 -46011].

Torque

After installing, bleed out the air.

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  • imogen
    How to replace nozzle pin for diesel engine toyota land cruiser?
    1 year ago

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