1) Warm-up engine till coolant temperature is up to
75
c
.
2) Remove the preheating plug and injection pipe.
3) Assemble the compression gauge at the position of
preheating plug and injection pipe.
4) Read the calibration of compressed gauge as
rotating engine with start motor.
Standard Limit
31.0 kg/cm
2
(at 200 rpm) 26.0 kg/cm
2
(at 200 rpm)
5) Practice other cylinder as same sequence.
Every compression pressure should be alike.
Allowable Inequality of compression is 2.0 kg/cm
2
.
If more, check related parts and replace it.
EJM1046S
EJM1047S
1.5.11. Compression Pressure Measurement
- 22 -
¥ Adjusting Procedure
1) Release injection pump mounting nuts.
2) To advance injection timing, rotate injection pump
for injection pump notch line to be toward below.
To retard the injection timing, rotate injection pump
in reverse direction.
When rotating injection pump by 1mm,
injection timing differ about 2˚.
3) Fix the injection pump mounting nuts.
EJM1045S
9) Remove delivery valve holder from #1 plunger.
10) Assemble the delivery valve intenal parts at the
devilvery valve holder.
11) Assemble the delivery valve holder assembly to
#1 plunger and tighten with the specified torque.
12) Assemble the #1 cylinder injection pipe and
tighten with the specified torque.
EJM1041S
Delivery Valve Holder Torque 4.25
L
0.25 kg¥ m
Injection Pipe Nut Torque 3.1
L
0.2 kg¥ m
Holder
Seat
Spring
Delivery Valve
mounting nuts
2
1
3
4
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