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10
MODEL TL90 - - BOSCH INJECTION PUMP CALIBRATION DATA
TYPE VE 4/11 F 1250 L 793 AND TYPE VE 4/11 F 1250 L 793- -1
ASSEMBLY DATA
Pump timing on engine: delivery start 7° ± 0.5° before
TDC of cylinder 1 on compression stroke.
Plunger pre--lift for pump timing on engine: 0.04 in. (1
mm) from BDC (with tools 380000228 -- 380000229).
Cylinder No. 1 delivery line union on pump: marked
with letter A.
ASSEMBLY DIMENSIONS
SYMBOL
K
KF
inch (mm)
0.126 to
0.209
0.134
(5.30)
(3.2 to 3.4)
(0.6 to 1.0)
Plunger pre--lift from BDC: mm 0
rpm: 800
rpm: 800
4. FULL- -LOAD DELIVERY WITH BOOSTER PRESSURE
Rev/min: --
LDA pressure: kPa --
5. FULL- -LOAD DELIVERY WITHOUT BOOSTER PRESSURE
rpm: 800
rpm: 325
LDA pressure: kPa --
rpm: 1325
LDA pressure: kPa --
rpm: 100
LDA pressure: kPa
Rev/min
Internal pressure supply: psi (bar)
LDA pressure kPa
Rev/min
Advance stroke mm
Rev/min
LDA pressure: kPa
Backflow for 10 s
NOTE: The values shown above in brackets must be used for checking purposes only.
SECTION 10 - - ENGINE - - CHAPTER 1
MS
SVS
ya
(max)
0.023 to
0.236 (6.0)
1.44 to
1.73 to
0.039
1.52 (36.5
1.93 (43.9
to 38.5)
to 49.1)
1. START OF DELIVERY
counterclockwise
2. ADVANCE REGULATOR STROKE
LDA pressure: kPa --
3. FUEL SUPPLY PUMP PRESSURE
LDA pressure: kPa --
Delivery per 1000 shots: cm
Delivery per 1000 shots: cm
6. SPREAD GOVERNOR AT IDLE SPEED
Delivery per 1000 shots: cm
7. SPREAD GOVERNOR AT MAXIMUM SPEED
Delivery per 1000 shots: cm
8. DELIVERY AT STARTING SPEED
9. TRANSFER PRESSURE PROGRESSION
10. INJECTION ADVANCE PROGRESSION
11. BACKFLOW
CALIBRATION TEST CONDITIONS
Test bench conforming to ISO 4008/1 .../2
Injectors
conforming
[(1.688.901.027 with pad ∅ 0.02 in. (0.5 mm)].
Injector pressure setting 3626 to 3670 psi
(250 to 253 bar).
Fuel supply pressure: 5.1 ± 0.7 psi (0.35 ± 0.05 bar).
Delivery pipes (conforming to ISO 4093.2):
0.2 x 0.07 x 17.7 in. (6 x 2 x 450 mm).
yb
Graduate drain time:
Test liquid: ISO 4113 at a temperature of
111.2° ± 4 °F (44° ± 4 °C) at outlet.
Internal pressure: 82.6 to 91.3 psi (5.7 to 6.3 bar)
3
--
3
67 to 68
Spread: cm
3
11 to 15
3
43 to 47
Delivery per 1000 shots: cm
400
(3.7 to 4.3
700
1.76 to 1.84
(1.1 to 2.5)
3
cm
41.6 to 86.1 (26.6 to101)
to
ISO
30 sec.
Injection order: 1--3--4--2
Advance stroke: 0.098 to 0.114 in.
(2.5 to 2.9 mm)
3
Spread: cm
--
3
≤ 3.5 (5.0)
3
Spread: cm
≤ 3.5 (5.0)
3
Spread: cm
--
3
65 to 115
--
800
5.7 to 6.3
--
800
2.5 to 2.9
(2.3 to 3.1)
400
--
55 to 138 (40 to 153)
7440--A61
--
1250
7.7 to 8.3
1150
6.0 to 6.8
(5.7 to 7.1)
1250
--
(continued)
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