Nissan Terrano model r20 series 2004. Manual — part 154
4. Clean spray hole of nozzle body by using Tool.
To prevent spray hole from canting, always clean it by start-
ing with inner side and working towards the outside.
5. Decarbonate nozzle needle tip by using Tool.
6. Check needle sink.
(1) Pull needle about halfway out from body and then release it.
(2) Needle should sink into body very smoothly from just its own
weight.
(3) Repeat this test and rotate needle slightly each time.
If needle fails to sink smoothly from any position, replace both
needle and body as a unit.
Assembly (No. 2 - 4 nozzle)
Assembly is in the reverse order of disassembly.
Holder to nozzle nut:
: 29 - 49 N
⋅
m (3.0 - 5.0 kg-m, 22 - 36 ft-lb)
SEF833
SEF834
SEF835
SEF967
INJECTION NOZZLE
TD27Ti
Cleaning (No. 2 - 4 nozzle) (Cont’d)
EC-338
Test and Adjustment
WARNING:
When using nozzle tester, be careful not to allow diesel fuel
sprayed from nozzle to contact your hands or body, and make
sure your eyes are properly protected with goggles.
INJECTION PRESSURE TEST
1. Install nozzle to injection nozzle tester and bleed air from flare
nut.
2. Pump the tester handle slowly (once per second) and watch the
pressure gauge.
3. Read the pressure gauge when the injection pressure just
starts dropping.
Initial injection pressure:
Used
12,259 - 12,749 kPa (122.6 - 127.5 bar,
120 - 130 kg/cm
2
, 1,706 - 1,849 psi)
New
12,749 - 13,730 kPa (127.5 - 137.3 bar,
130 - 140 kg/cm
2
, 1,849 - 1,991 psi)
Always check initial injection pressure using a new nozzle.
4. To adjust injection pressure, change adjusting shims. (No. 2 -
4 nozzle)
a. Increasing the thickness of adjusting shims increases ini-
tial injection pressure. Decreasing thickness reduces ini-
tial pressure.
b. A shim thickness of 0.04 mm (0.0016 in) corresponds
approximately to a difference of 471 kPa (4.71 bar, 4.8
kg/cm
2
, 68 psi) in initial injection pressure.
Refer to SDS for adjusting shim.
EF791A
SEF672A
SEF427F
INJECTION NOZZLE
TD27Ti
EC-339
LEAKAGE TEST
1. Maintain the pressure at about 981 to 1,961 kPa (9.8 to 19.6
bar, 10 to 20 kg/cm
2
, 142 to 284 psi) below initial injection
pressure.
2. Check that there is no dripping from the nozzle tip or around the
body.
3. If there is leakage, replace nozzle assembly.
SPRAY PATTERN TEST
1. Check spray pattern by pumping tester handle one full stroke
per second.
a. If main spray angle is within 30 degrees as shown, injec-
tion nozzle is good.
b. It is still normal even if a thin stream of spray deviates from
the main spray (pattern B).
2. If the spray pattern is not correct, disassemble and clean
nozzle.
3. Test again and if spray pattern is not corrected, replace nozzle.
SEF674A
SEF079S
INJECTION NOZZLE
TD27Ti
Test and Adjustment (Cont’d)
EC-340
q
1
Electric fuel injection pump
q
2
Key
q
3
Bracket
q
4
Injection pump drive gear
q
5
Dust cover
q
6
Bracket
q
7
Gasket
q
8
Gasket
Removal
1. Remove battery.
Disconnect electronic injection pump harness connectors.
2. Set No. 1 piston at TDC on its compression stroke.
3. Remove fuel hoses (supply, return and spill) and injection
tubes.
NEF460
EEF181
ELECTRONIC FUEL INJECTION PUMP
TD27Ti
EC-341
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