104700-9153 ZEXEL 9 460 614 964 BOSCH INJECTION-PUMP ASSEMBLY 9460614964 1047009153

Information Cross number Calibration Data Calibration Data Ex

Information injection-pump assembly

BOSCH 9 460 614 964 9460614964

ZEXEL 104700-9153 1047009153

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Components :

0.	INJECTION-PUMP ASSEMBLY	104700-9153
1.	_
2.	FUEL INJECTION PUMP
3.	NUMBER PLATE	148643-3400
4.	_
5.	CAPSULE
6.	ADJUSTING DEVICE
7.	NOZZLE AND HOLDER ASSY
8.	Nozzle and Holder
9.	Open Pre:MPa(Kqf/cm2)
10.	NOZZLE-HOLDER
11.	NOZZLE

Scheme ###:

1/6.	[1]	146601-0700	PACKING RING
6.	[1]	146100-0120	SUPPLY PUMP
9.	[1]	148103-0400	COVER
10.	[2]	139104-0000	FLAT-HEAD SCREW
12.	[1]	148200-0520	DRIVE SHAFT
17.	[1]	146204-0000	PLAIN WASHER
20.	[1]	148210-0120	ROLLER SET
24.	[1]	146303-0000	BEARING PIN
25.	[1]	146304-0000	BEARING PIN
26.	[1]	146305-0000	CLAMPING BAND
27.	[1]	146205-0000	SLOTTED WASHER
29.	[1]	146220-2120	CAM PLATE
30.	[1]	146600-0800	O-RING
31.	[1]	146300-1900	PUMP PLUNGER
32.	[1]	146301-0000	SLIDING PIECE
33.	[1]	146603-1100	SHIM
34.	[1]	146306-1800	COMPRESSION SPRING
34B.	[1]	146306-2100	COMPRESSION SPRING
35/1.	[0]	146603-0700	SHIM
35/1.	[0]	146603-0800	SHIM
35/1.	[0]	146603-0900	SHIM
35/1.	[0]	146603-1000	SHIM
35/1.	[0]	146603-1100	SHIM
35/1.	[0]	146603-3600	SHIM
36.	[1]	146600-0800	O-RING
37.	[1]	479766-3820	TIMER PISTON SENSOR
38.	[2]	146622-1200	HEX-SOCKET-HEAD CAP SCREW
39.	[1]	146310-5600	COVER
40.	[2]	146622-1300	BLEEDER SCREW
43.	[1]	146230-0000	SHIM
44.	[1]	146230-0100	PLAIN WASHER
45.	[1]	146231-0001	SLOTTED WASHER
47.	[2]	146233-0000	SLOTTED WASHER
48/1.	[1]	146603-0000	SHIM
48/1.	[1]	146603-0100	SHIM
48/1.	[1]	146603-0200	SHIM
48/1.	[1]	146603-0300	SHIM
48/1.	[1]	146603-0400	SHIM
48/1.	[1]	146603-0500	SHIM
48/1.	[1]	146603-0600	SHIM
48/1.	[1]	146690-1400	SHIM
48/1.	[1]	146690-1500	SHIM
48/1.	[1]	146690-1600	SHIM
48/1.	[1]	146690-1700	SHIM
48/1.	[1]	146690-1800	SHIM
48/1.	[1]	146690-1900	SHIM
48/1.	[1]	146690-5800	SHIM
48/1.	[1]	146690-5900	SHIM
48/1.	[1]	146690-6000	SHIM
48/1.	[1]	146690-6100	SHIM
48/1.	[1]	146690-6200	SHIM
48/1.	[1]	146690-6300	SHIM
48/1.	[1]	146690-6400	SHIM
48/1.	[1]	146690-6500	SHIM
48/1.	[1]	146690-6600	SHIM
48/1.	[1]	146690-6700	SHIM
48/1.	[1]	146690-6800	SHIM
48/1.	[1]	146690-6900	SHIM
48/1.	[1]	146690-7000	SHIM
48/1.	[1]	146690-7100	SHIM
48/1.	[1]	146690-7200	SHIM
48/1.	[1]	146690-7300	SHIM
48/1.	[1]	146690-7400	SHIM
48/1.	[1]	146690-7500	SHIM
48/1.	[1]	146690-7800	SHIM
49.	[2]	146234-0500	GUIDE PIN
50.	[1]	146403-9620	HYDRAULIC HEAD
50.	[1]	146403-9620	HYDRAULIC HEAD
50.	[1]	146403-9620	HYDRAULIC HEAD
51.	[1]	146600-0000	O-RING
52/1.	[1]	146420-0000	SHIM
52/1.	[1]	146420-0100	SHIM
52/1.	[1]	146420-0200	SHIM
52/1.	[1]	146420-0300	SHIM
52/1.	[1]	146420-0400	SHIM
52/1.	[1]	146420-0500	SHIM
52/1.	[1]	146420-0600	SHIM
52/1.	[1]	146420-0700	SHIM
52/1.	[1]	146420-0800	SHIM
52/1.	[1]	146420-0900	SHIM
52/1.	[1]	146420-1000	SHIM
52/1.	[1]	146420-1100	SHIM
52/1.	[1]	146420-1200	SHIM
52/1.	[1]	146420-1300	SHIM
52/1.	[1]	146420-1400	SHIM
52/1.	[1]	146420-1500	SHIM
52/1.	[1]	146420-1600	SHIM
52/1.	[1]	146420-1700	SHIM
52/1.	[1]	146420-1800	SHIM
52/1.	[1]	146420-1900	SHIM
52/1.	[1]	146420-2000	SHIM
52/1.	[1]	146420-2100	SHIM
52/1.	[1]	146420-2200	SHIM
52/1.	[1]	146420-2300	SHIM
52/1.	[1]	146420-2400	SHIM
52/1.	[1]	146420-2500	SHIM
52/1.	[1]	146420-2600	SHIM
52/1.	[1]	146420-2700	SHIM
52/1.	[1]	146420-2800	SHIM
52/1.	[1]	146420-2900	SHIM
52/1.	[1]	146420-3000	SHIM
52/1.	[1]	146420-3100	SHIM
52/1.	[1]	146420-3200	SHIM
52/1.	[1]	146420-3300	SHIM
52/1.	[1]	146420-3400	SHIM
52/1.	[1]	146420-3500	SHIM
52/1.	[1]	146420-3600	SHIM
52/1.	[1]	146420-3700	SHIM
52/1.	[1]	146420-3800	SHIM
52/1.	[1]	146420-3900	SHIM
52/1.	[1]	146420-4000	SHIM
52/1.	[1]	146420-4100	SHIM
52/1.	[1]	146420-4200	SHIM
52/1.	[1]	146420-4300	SHIM
52/1.	[1]	146420-4400	SHIM
52/1.	[1]	146420-4500	SHIM
52/1.	[1]	146420-4600	SHIM
52/1.	[1]	146420-4700	SHIM
52/1.	[1]	146420-4800	SHIM
52/1.	[1]	146420-4900	SHIM
52/1.	[1]	146420-5000	SHIM
52/1.	[1]	146420-5100	SHIM
52/1.	[1]	146420-5200	SHIM
52/1.	[1]	146420-5300	SHIM
52/1.	[1]	146420-5400	SHIM
52/1.	[1]	146420-5500	SHIM
52/1.	[1]	146420-5600	SHIM
52/1.	[1]	146420-5700	SHIM
52/1.	[1]	146420-5800	SHIM
54.	[4]	146433-0100	GASKET
55.	[4]	146430-0320	DELIVERY-VALVE ASSEMBLY
56.	[4]	146432-0000	COMPRESSION SPRING
58.	[4]	146440-3220	FITTING
60.	[3]	146622-1800	FLAT-HEAD SCREW
123.	[1]	146622-0900	FLAT-HEAD SCREW
130.	[1]	146421-1920	CAPSULE
130/2.	[1]	139508-0200	GASKET
130/3.	[1]	146422-0700	BLEEDER SCREW
130/4.	[1]	146600-0500	O-RING
133.	[1]	146600-0600	O-RING
134.	[1]	146600-0700	O-RING
135.	[1]	146110-3520	CONTROL VALVE
135/5.	[1]	146114-0000	SPRING WASHER
136.	[1]	148120-0320	OVER FLOW VALVE
137.	[3]	139512-0500	GASKET
138.	[1]	146669-5821	INLET UNION
158.	[1]	146663-5500	SPACER BUSHING
200.	[1]	146206-0100	COILED SPRING
205.	[1]	029470-4030	WOODRUFF KEY
230.	[1]	148613-6620	BRACKET
236.	[1]	146622-1400	HEX-SOCKET-HEAD CAP SCREW
237.	[1]	146622-1500	HEX-SOCKET-HEAD CAP SCREW
240.	[1]	146688-3720	PULLING ELECTROMAGNET
240/8.	[1]	146600-1700	O-RING
243.	[1]	146621-1000	UNION NUT
245.	[3]	139512-0500	GASKET
246.	[1]	146125-1000	EYE BOLT
247.	[1]	146677-7920	INLET UNION
248.	[1]	146663-5600	SPACER BUSHING
275.	[1]	148612-1600	BRACKET
276.	[2]	146622-1700	BLEEDER SCREW
278.	[2]	146663-5700	SPACER BUSHING
282.	[1]	146622-1900	BLEEDER SCREW
504/1.	[1]	146649-4500	RESISTER
504/1.	[1]	146649-4600	RESISTER
504/1.	[1]	146649-4700	RESISTER
504/1.	[1]	146649-4800	RESISTER
504/1.	[1]	146649-4900	RESISTER
504/1.	[1]	146649-5000	RESISTER
504/1.	[1]	146649-5100	RESISTER
504/1.	[1]	146649-5200	RESISTER
504/1.	[1]	146649-5300	RESISTER
504/1.	[1]	146649-5400	RESISTER
504/1.	[1]	146649-5500	RESISTER
504/1.	[1]	146649-5600	RESISTER
504/1.	[1]	146649-5700	RESISTER
505.	[1]	148530-4820	GOVERNOR;ELECTRIC
506.	[3]	146622-1000	FLAT-HEAD SCREW
515.	[1]	106144-1071	TIMING CONTROL VALVE
515/7.	[1]	161440-3800	O-RING
515/8.	[1]	161440-3700	O-RING
516.	[2]	146622-1600	HEX-SOCKET-HEAD CAP SCREW
531.	[1]	479766-3620	PULSE GENERATOR
531/6.	[1]	479773-6500	O-RING
535.	[1]	148650-0300	TAPE
536.	[1]	148650-4100	TUBE
551.	[1]	146659-9501	CLAMPING BAND
552.	[1]	014110-8442	LOCKING WASHER
553.	[1]	010208-1242	HEX-SOCKET-HEAD CAP SCREW
800S.	[1]	148009-0620	PUMP HOUSING
800S/1/6.	[1]	146601-0700	PACKING RING
804S.	[1]	146232-0320	COMPRESSION SPRING
810S.	[1]	146600-4620	REPAIR SET
821S.	[1]	146210-5720	ROLLER SET
878S.	[1]	148600-1300	SEAL RING
906.	[1]	148643-3400	NAMEPLATE

Include in #2:

104700-9153 as INJECTION-PUMP ASSEMBLY

Cross reference number

BOSCH 9 460 614 964 9460614964

ZEXEL 104700-9153 1047009153

Zexel num

Bosch num

Firm num

Name

104700-9153

9 460 614 964

INJECTION-PUMP ASSEMBLY
4D56TCI 11CL INJECTION PUMP ASSY COVEC 4 COVEC

104700-9153
104700-9154

9 460 614 964

3310542720 HYUNDAI

INJECTION-PUMP ASSEMBLY
4D56TCI * K 11CL INJECTION PUMP ASSY COVEC 4 COVEC

Calibration Data:

Adjustment conditions

Test oil
1404 Test oil ISO4113orSAEJ967d

Test oil temperature degC 45 45 50

Nozzle 105780-0060

Bosch type code NP-DN0SD1510

Nozzle holder 105780-2150

Opening pressure MPa 13 13 13.3

Opening pressure kgf/cm2 133 133 136

Injection pipe 157805-7320

Injection pipe
Inside diameter - outside diameter - length (mm) mm 2-6-450

Joint assembly 157641-4720

Tube assembly 157641-4020

Transfer pump pressure kPa 20 20 20

Transfer pump pressure kgf/cm2 0.2 0.2 0.2

Direction of rotation (viewed from drive side)
Right R

Governor adjustment

Pump speed r/min 1000 1000 1000

TCV duty (%) F TCV 60Hz % 100 100 100

U alpha soll V 2.7 2.7 2.7

Pump chamber pressure kPa 598 569 627

Pump chamber pressure kgf/cm2 6.1 5.8 6.4

Basic *

Governor adjustment_02

Pump speed r/min 100 100 100

TCV duty (%) F TCV 60Hz % 100 100 100

U alpha soll V 2.7 2.7 2.7

Pump chamber pressure kPa 294 294

Pump chamber pressure kgf/cm2 3 3

Governor adjustment_03

Pump speed r/min 1000 1000 1000

TCV duty (%) F TCV 60Hz % 100 100 100

U alpha soll V 2.7 2.7 2.7

Pump chamber pressure kPa 598 559 637

Pump chamber pressure kgf/cm2 6.1 5.7 6.5

Governor adjustment_04

Pump speed r/min 2000 2000 2000

TCV duty (%) F TCV 60Hz % 100 100 100

U alpha soll V 2.7 2.7 2.7

Pump chamber pressure kPa 735 686 784

Pump chamber pressure kgf/cm2 7.5 7 8

Boost compensator adjustment

Pump speed r/min 1000 1000 1000

TCV duty (%) F TCV 60Hz % 100 100 100

U alpha soll V 2.7 2.7 2.7

Timer stroke mm 7.7 7.5 7.9

Basic *

Boost compensator adjustment_02

Pump speed r/min 100 100 100

TCV duty (%) F TCV 60Hz % 100 100 100

U alpha soll V 2.7 2.7 2.7

Timer stroke mm 1.8 0.3 3.3

Boost compensator adjustment_03

Pump speed r/min 350 350 350

TCV duty (%) F TCV 60Hz % 100 100 100

U alpha soll V 2.7 2.7 2.7

Timer stroke mm 5.2 3.1 7.3

Boost compensator adjustment_04

Pump speed r/min 1000 1000 1000

TCV duty (%) F TCV 60Hz % 100 100 100

U alpha soll V 2.7 2.7 2.7

Timer stroke mm 7.7 7.4 8

Boost compensator adjustment_05

Pump speed r/min 1000 1000 1000

TCV duty (%) F TCV 60Hz % 70 70 70

U alpha soll V 2.7 2.7 2.7

Timer stroke mm 4 1.9 6.1

Boost compensator adjustment_06

Pump speed r/min 2000 2000 2000

TCV duty (%) F TCV 60Hz % 100 100 100

U alpha soll V 2.7 2.7 2.7

Timer stroke mm 9.75 9.3 10.2

Boost compensator adjustment_07

Pump speed r/min 2000 2000 2000

TCV duty (%) F TCV 60Hz % 0 0 0

U alpha soll V 2.7 2.7 2.7

Timer stroke mm 0 0 0

Timer adjustment

Pump speed r/min 1000 1000 1000

TCV duty (%) F TCV 60Hz % 0 0 0

U alpha soll V 2.7 2.7 2.7

Vtps V 0.51 0.382 0.638

Basic *

Timer adjustment_02

Pump speed r/min 1000 1000 1000

TCV duty (%) F TCV 60Hz % 0 0 0

U alpha soll V 2.7 2.7 2.7

Vtps V 0.51 0.382 0.638

Timer adjustment_03

Pump speed r/min 1000 1000 1000

TCV duty (%) F TCV 60Hz % 100 100 100

U alpha soll V 2.7 2.7 2.7

Vtps V 1.925 1.702 2.148

Speed control lever angle

Pump speed r/min 1000 1000 1000

TCV duty (%) F TCV 60Hz % 100 100 100

U alpha soll V 2.7 2.7 2.7

Overflow quantity cm3/min 550 420 680

0000000901

Pump speed r/min 1250 1250 1250

U alpha soll + dU alpha soll V 2.86 2.86 2.86

TCV duty (%) F TCV 60Hz % 100 100 100

Average injection quantity mm3/st. 72 71.5 72.5

Difference in delivery mm3/st. 3.5

Basic *

_02

Pump speed r/min 375 375 375

U alpha soll + dU alpha soll V 2 2 2

TCV duty (%) F TCV 60Hz % 100 100 100

Average injection quantity mm3/st. 14.8 11.8 17.8

Difference in delivery mm3/st. 2.5

Basic *

Remarks
Confirmation of difference in delivery

_03

Pump speed r/min 2575 2575 2575

U alpha soll + dU alpha soll V 1.96 1.96 1.96

TCV duty (%) F TCV 60Hz % 100 100 100

Average injection quantity mm3/st. 20.3 17.8 22.8

Difference in delivery mm3/st. 5.5

Basic *

Remarks
Confirmation of difference in delivery

_04

Pump speed r/min 100 100 100

U alpha soll + dU alpha soll V 3.31 3.31 3.31

TCV duty (%) F TCV 60Hz % 100 100 100

Average injection quantity mm3/st. 67.9 57.9 77.9

_05

Pump speed r/min 375 375 375

U alpha soll + dU alpha soll V 2 2 2

TCV duty (%) F TCV 60Hz % 100 100 100

Average injection quantity mm3/st. 14.8 11.8 17.8

_06

Pump speed r/min 500 500 500

U alpha soll + dU alpha soll V 2.74 2.74 2.74

TCV duty (%) F TCV 60Hz % 100 100 100

Average injection quantity mm3/st. 51.2 48.7 53.7

_07

Pump speed r/min 750 750 750

U alpha soll + dU alpha soll V 2.83 2.83 2.83

TCV duty (%) F TCV 60Hz % 100 100 100

Average injection quantity mm3/st. 63.1 60.6 65.6

_08

Pump speed r/min 1000 1000 1000

U alpha soll + dU alpha soll V 2.87 2.87 2.87

TCV duty (%) F TCV 60Hz % 100 100 100

Average injection quantity mm3/st. 70.4 67.9 72.9

_09

Pump speed r/min 1250 1250 1250

U alpha soll + dU alpha soll V 2.86 2.86 2.86

TCV duty (%) F TCV 60Hz % 100 100 100

Average injection quantity mm3/st. 72 71 73

_10

Pump speed r/min 1500 1500 1500

U alpha soll + dU alpha soll V 2.82 2.82 2.82

TCV duty (%) F TCV 60Hz % 100 100 100

Average injection quantity mm3/st. 68.6 66.1 71.1

_11

Pump speed r/min 1750 1750 1750

U alpha soll + dU alpha soll V 2.8 2.8 2.8

TCV duty (%) F TCV 60Hz % 100 100 100

Average injection quantity mm3/st. 65.5 63 68

_12

Pump speed r/min 1900 1900 1900

U alpha soll + dU alpha soll V 2.77 2.77 2.77

TCV duty (%) F TCV 60Hz % 100 100 100

Average injection quantity mm3/st. 63.8 61.3 66.3

_13

Pump speed r/min 2575 2575 2575

U alpha soll + dU alpha soll V 1.96 1.96 1.96

TCV duty (%) F TCV 60Hz % 100 100 100

Average injection quantity mm3/st. 20.3 17.8 22.8

_14

Pump speed r/min 2575 2575 2575

U alpha soll + dU alpha soll V 1 1 1

TCV duty (%) F TCV 60Hz % 100 100 100

Average injection quantity mm3/st. 3

Stop lever angle

Pump speed r/min 1900 1900 1900

U alpha soll + dU alpha soll V 2.77 2.77 2.77

TCV duty (%) F TCV 60Hz % 100 100 100

Average injection quantity cm3/min 0 0 0

0000001101

Pump speed r/min 200 200 200

TCV duty (%) F TCV 60Hz % 100 100 100

U alpha soll V 2.7 2.7 2.7

Speed output
N=Measure the actual speed. r/min N+-8

0000001201

Pump speed r/min 1250 1250 1250

TCV duty (%) F TCV 60Hz % 100 100 100

U alpha soll V 2.73 2.73 2.73

Temperature output
Measure T = actual output temperature degC T+-5

0000001301

Max. applied voltage V 8 8 8

Test voltage V 13 12 14

0000001401

K dimension mm 3.3 3.2 3.4

KF dimension mm 5.8 5.7 5.9

Pre-stroke mm 0.1 0.08 0.12

Test data Ex:

Injection timing adjustment Comp. resistor/voltage

Compensation resistance/compensation voltage comparison A = Compensation resistor number B= Compensation resistance C = Compensation voltage delta U alpha soll
----------

----------

0000001601 HARNESS & CONNECTOR

T.C.V. connector assembly specification (1)Ensure the GE cable is not twisted at section A. (2)Refer to diagram for direction of connector B. (3)Route the TCV harnes C in the direction indicated by the arrows in the figure and install the connector.
----------

----------

0000001701 HARNESS & CONNECTOR

Harness position specification (1)Ensure each dimension is as shown in the diagram and fix the harness using the binders. (2)Cut the binder leaving no more than L1 excess. (3)After completing all of the procedures, ensure no lead wires are exposed after routing the harness. A = GE, FCV, TCV, Q adjustment B=NP C=TPS E = binder
----------

----------
a=(75deg) L1=Max.2mm L2=75+-10mm L3=100+-10mm L4=100+-10mm

0000001801 HARNESS & CONNECTOR

Corrugated tube assembly specification (1)Align the end of the corrugated tube with clip A and fix it using black vinyl tape (L1, L2). (2)Confirm that the dimension to the end of the corrugated tube C is L3, and fix it using black vinyl tape (L4, L5). (3)Refer to the illustration for the position of the corrugated tube slit. A = binder B = outside edge of binder C = end of corrugated tube D = position of corrugated tube's slit
----------

----------
L1=Max.25mm L2=Max.10mm L3=265+-10mm L4=(20mm) L5=(30mm) a=45deg

0000001901 HARNESS & CONNECTOR

Harness fixing specification (1)Make the clearance between the clip J and the clip (B with metal end face) L1. (2)Fix clip B using socket head bolt D. At this time, adjust to within the tolerance L1 so that the TPS and NP harnesses in section A do not have excessive slack. (3)Clip the GE cable and the FCV harness using clip E, and the TPS-NP harness using clip G. (4)Attach the binder G after ensuring that the TPS cover H is not loose. B = clip D = socket head bolt E = binder G=Binder H = TPS cover J = binder
----------

----------
L1=240+-10mm L2=27~37mm T1=9.8~13.7N-m(1.0~1.4kgf-m)

0000002001 HARNESS & CONNECTOR

Vinyl tape assembly specification Wrap with vinyl tape at position A in the figure.
----------

----------
L1=170+-10mm L2=25+-10mm L3=(20mm) L4=(20mm) L5=(10mm)

0000002101 HARNESS & CONNECTOR

Marking application specification (1)Ensure the corrugated tube is not twisted and then mark the position A shown in the figure. (2)3) Mark at the two locations indicated in the figure ( viewed from the side of the pump and the top of the pump). The markings must be the dimensions shown and approx. 5 mm wide. (3)2) Use indelible paint for steel. A = white marking B = End of tape binding
----------

----------
L1=20+-5mm

Information:

Table 4 is an example for using the equation that is in Table 3.
Table 4
Example of the Equation for the Addition of Cat SCA To Water For Maintenance
Total Volume of the Cooling System (V) Multiplication
Factor Amount of Cat SCA that is Required (X)
946 L
(250 US gal) × 0.023 22 L
(6 US gal) Note: Specific engine applications may require maintenance practices to be periodically evaluated to maintain the engine cooling system properly.Cleaning the System of Heavy-Duty Coolant/Antifreeze
Before Cat SCA can be effective, the cooling system must be free from rust, scale, and other deposits. Preventive cleaning helps avoid downtime caused by expensive out-of-service cleaning required for extremelydirty and neglected cooling systems.Cat Cooling System Cleaners
Dissolves or depresses mineral scales, corrosion products, light oil contaminations, and sludges
Cleans the cooling system after used coolant is drained or before the cooling system is filled with new coolant
Cleans the cooling system whenever the coolant is contaminated or whenever the coolant is foaming
The “Standard” version of the Cat Cooling System Cleaners clean the cooling system while still in service.
Reduces downtime and cleaning costs
Helps avoid costly repairs from pitting and other internal problems caused by improper cooling system maintenance
Can be used with glycol-based antifreeze
For the recommended service interval, refer to the Operation and Maintenance Manual, "Maintenance Interval Schedule" for your engine.Cat Standard Cooling System Cleaners are designed to clean the cooling system of harmful scale and corrosion without removing the engine from service. The cleaners, both “Standard” and “Quick Flush” can be used in all Cat engine cooling systems. Consult your Cat dealer for part numbers.Note: These cleaners must not be used in systems that have been neglected or that have heavy scale buildup. These systems require a stronger commercial solvent that is available from local distributors.Prior to performing a cleaning of the cooling system, take a 1-liter (1-quart) sample of coolant from the engine while in operation into a clear container. Take the sample shortly after start-up while the coolant is not yet hot. The coolant should be adequately mixed by the water pump. Allow the sample