7.3. Fuel System
7.3.1. Injection pump
The components relating to the injection pump should be serviced at regular intervals as the
plunger and delivery valve may be worn after a given length of time for use and cause the
deterioration of the engine.
Make sure that servicing should be performed at the professional maintenance shop as
authorized by Bosch or Zexel Company.
For adjustment of fuel injection volume, refer to the ‘Specifications of fuel injection pump’
described on the following pages.
1) L136, AD136
(1) Main Specification
Fuel Injection Pump : 65.11101-7269A
Governor Type : RSV
Model Type : PES6AD
Cam Lift : 11 mm
Fuel Feed Pump : 105210-4830
Injection Timing : BTDC 18°±1°
Injection Order : 1-5-3-6-2-4
Rotating Direction : Clockwise (Viewed at driving gear side)
(2) Calibration Data
- 108 -
(A) Test condition Nozzle & Holder Ass’y 105780-8140 Opening pressure :175kg/cm
2
for injection pump Injection pipe(ID ,OD ,L) - 8.0 x 2.0 - 600 mm
Test oil ISO4113 Temperature :40 ± 5 ˚C
(B) Engine standard 65.10101-7050 Nozzle (5 x 0.36)
parts
Nozzle & holder Ass’y
- 214 + 8 kg/cm
2
Injection pipe (ID, OD, L) - 6 x 2.2 - 650 mm
Rack diagram and setting valve at each point
Refer to (3) Rack Diagram
Rack Pump
Injection Q`ty on RIG
Check
position
speed
(mm
3
/ 1,000st) Press.
point (A) Test condition Max. Var.
(mmHg)
(mm) (rpm)
for inj. Pump Bet. Cyl. (%)
A 10.5 1100 88.5 ± 2 ± 2.5 Full
B 7.7 370 11.5 ± 2 ± 25 Idle
C 100 (135) - -
Balance Weight 740g Lever ratio (min/max)
1 : 1.2
Governor spring k = 7.2 kg/mm Plunger 9.5 , 20 + 45 lead
Idle spring k = 1.9 kg/mm
Delivery valve retraction volume
70 mm
3
/st, t=0.11
Idle sub spring k = 3.0 kg/mm
Delivery valve opening pressure
23.1 kg/cm
2
Start spring k = 0.01 kg/mm Delivery valve spring k = 1.63 kg/mm
Max. discharge pressure k = 3.4 kg/mm
2
Feed pump
105210-5280
(KP-FP/KE-ADS)
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