1987 MAZDA 626 fuel

4D FUEL SYSTEM
INJECTION PUMP
On-Vehicle Inspection
Fuel cut solenoid valve
1. Run the engine at idle.
2. Disconnect the solenoid valve connector, and let
the engine stop.
3. If the engine does not stop, replace the fuel cut
solenoid valve.
76G04D-055
Pick up coil
1. Disconnect the pick up coil connector.
2. Check for continuity of the coil using an ohmmeter.
3. Replace it if there is not continuity.
76G04D-056
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1 mm (0.39 in) Injection Timing Adjustment
Inspection
Check the injection timing. (Refer to page 4D—5.)
Injection timing
RF-CX: ATDC 10
RF-N : TDC 0°
76G04D-057
Adjustment
1. Loosen the injection pump mounting nut.
2. Loosen the injection pump bracket bolt.
76G04D-058
4D—24

FUEL SYSTEM 4D
RF-CX
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RF-N
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5-
76G04D-059
76G04D-060
76G04D-061
3. Turn the crankshaft, and align the flywheel indica-
tor pin at ATDC 10 (RF-CX), or TDC 0° (RF-N).
4. Turn the injection pump until the dial indicator in-
dicates 1 mm (0.04 in).
Note
Refer to page 4D—4 for initial setting of the
dial indicator.
Cam Height Inspection
1. Set the SST into the injection pump as for injec-
tion timing adjustment. (Refer to page 4D—4.)
2. Turn the crankshaft clockwise and read the maxi-
mum difference of the indicator value, which gives
the cam height.
Cam height: 2.2 mm (0.08 in)
76G04D-062
4D—25

4D FUEL SYSTEM
Removal and Installation
1. Remove in the sequence shown in the figure, referring to the removal note for specially marked parts.
2. Install in the reverse order of removal.

59—69 N-m
(6.0—7.0 m-kg, 43-51 ft-lb)
19—26
N m
(1.9—2.6
m-kg,
14—19 ft-lb) 25—29
N-m .5—3.0 m-kg, 18—22
ft-lb)

19—26 N-m
(1.9—2.6
m-kg,
14—19 ft-lb)
76G04D-063
1. Accelerator cable
2. Injection pipe
3. Fuel hose
4. Water hose
5. Fuel cut solenoid valve con-
nector
6. Pick-up coil connector
7. Boost air hose (RF-CX)
8. Injection pump pulley lock
nut
9. Injection pump
Removal note
Injection pipe
Warning
a) Catch leaking fuel with a rag when remov-
ing the injection pipes.
b) Keep fire and open flame away from the fuel
area.
Remove the injection pipes.
76G04D-064
4D—26

FUEL SYSTEM 4D
76G04D-065
76G04D-066
Injection pump pulley
1. Put two 35—40 mm (1.3—1.6 in) long bolts through
the injection pump pulley and affix them in the
threaded holes of the injection pump bracket.
2. Loosen the injection pump pulley bolt.
3. Separate the injection pump pulley from the injec-
tion pump shaft with the SST.
Steps after installation
1. After installation adjust the injection timing. (Refer
to page 4D—24.)
2. Bleed air from the fuel line.
3. Check for fuel leakage.
76G04D-067
4D—27

4D FUEL SYSTEM
Overhaul
Service point
1. For overhauling the injection pump, see the "Repair Service and Maintenance" manual prepared
by the manufacturer of the pump.
2. If the inside of the injection pump is disassembled for maintenance, be sure to properly use the
checking device such as the pump tester.
76G04D-068
Manufacturer of Injection Pump:
Diesel Kiki Co., Ltd.
63G04D-312
Construction of VE Injection Pump
Servo diaphragm
Boost compensation stopper
p^ ^-Fue! cut solenoid
valve
'Cold start device
63G04D-313
4D—28

VE-TYPE RF71 13 800C: 104749-0343 For RF-CX
# TEST OIL SAE Standard test oil (SEA 967C)
Fuel injection amount Chamber pressure and timer stroke Load sensing timer and overflowing quantity Measurenment
Item Pump speed (RPM) Fuel injection amount
(cm3/stroke)
Start 100 More than 55/1,000
Full load
600 33.9—38.9/1,000
Full load
1,000 48 9—50.9/1,000
Full load 2,150 39.7—44 7/1,000 Full load
2,250 32.7-37.7/1,000
Full load
2,550 8.0—15.0/1,000
Idling 360 7.6—10.6/1,000
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Pump speed (RPM) Chamber pressure
(kg/cm2)
Timer stroke (mm)
500 500
1,250 4.5—5.1 2.7—3.9
1,500 5.2—5.8 4 3-4.9
2,150 6.8—7 4 7.6-8.8
Item Fuel injectioon amount
(cm3/stroke)
Load sens-ing timer
Start 37.2-39.2/1,000 Load sens-ing timer End 32.2-34.2/1.000
Overflowing quantity 41.0—85.0/1.000
"Checking condition
Pump speed: 1,500 rpm
Lever: Full load
Measuring place Dimension (mm)
KF 5.7—5.9
K 3.2—3.4
MS 1.6-1.8

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100 600 1,000 1,250 1,500
Injection pump speed RPM
10
2,150 2,250 2,550
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VE-TYPE RF79 13 800A: 104748-0343 For RF-N ENGINE
£ TEST OIL SAE Standard test oil (SEA 967C)
Fuel injection amount Chamber pressure and timer stroke Load sensing timer and overflowing quantity Measurenment
Item Pump speed (RPM)
Fuel injection amount
(cm3/stroke)
Start 100 More than 42/1,000
Full load
600 29.0—33.0/1,000
Full load
1.375 34.9—36.9/1,000
Full load 2,325 30 2—34.2/1,000 Full load
2,600 9.8—15 8/1,000
Full load
2,700 Max. 6 0/1,000
Idling 360 8-12/1,000
Pump speed (RPM) Chamber pressure
(kg/cm2)
Timer stroke
(mm)
600 2 2—2.8
1,375 4 4—5,0 3 9—4.5
1,800 5 6—6.2 6.1-7.3
2.325 6.9—7.5 7.2—8.4
Item Fuel injectioon amount
(cm3/stroke)
Load sens- Start 26.7-29.7/1,000
ing timer End 14.6—17.6/1,000
Overflowing quantity 46.3—90.3/1.000
'Checking condition
Pump speed: 1,375 rpm
Lever: Full load
Measuring place Dimension (mm)
KF 5.8—5.9
K 3.2—3 4
MS 1.4—1.6
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50
40
30
20
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100 600
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1,375 1,800
Injection pump speed RPM
2,325 2,600 2,700
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FUEL SYSTEM 4D
INJECTION NOZZLE
Removal
Remove in the sequence shown in the figure, referring to the removal note for the specially marked parts.
Removal note
Injection pipe
Warning
a) Catch leaking fuel leakage with a rag when
removing the injection pipes.
b) Keep fire and open flame away from the fuel
area.
Remove the injection pipes.
1. Injection pipe bracket
2. Injection pipe
3. Fuel leak pipe
4. Fuel injection nozzle
76G04D-072
4D—31