2000/12/18 Caterpillar

Asphalt Paver:

AP-1000B (PIN: 7HN1-251, 253-265 and 268-268)

AP-1050B (PIN: 6ZN1-201)

AP-1055B (PIN: 8BM1-UP; ABB1-276, 278-278, 280-311, 313-314, 316-316, 318-320, 321-323 and 328-330)

AP-650B (PIN: 9DN1-426)

BG-225C (PIN: 5GN1-481)

BG-230 (PIN: 9AL1-275)

BG-2455C (PIN: 6TN1-UP; ACM1-261)

BG-245C (PIN: 4XN1-129)

BG-260C (PIN: 8GN1-554)

AP-800C (PIN: 1PM1-742, 746-748 and 750-750)

AP-900B (PIN: AGJ1-119)

BG-240C (PIN: AGL1-214)

Service Magazine SEPD0537, 14 August 2000, "Reduce Smoke Emissions by Converting the System". Disregard this article. See the replacement article that follows.

Description of Change: Smoke emission can be reduced in the burner system for the screeds when you install different components. The different components will improve combustion efficiency. The different components will eliminate leaks at the nozzle after the burner system is shut down. In order to perform the rework, you must replace the following items: fuel pump, fuel injector nozzles, flame ring and cone. You must install the restrictor plates and the plugs. The conversion will require 3 hours to 4 hours.

Table 1

Required Parts
Quantity	Part Number	Description
4	191-5983	Cone
4	187-9608	Nozzle
4	187-9760	Plate
4	191-1035	Plug
4	191-1036	Plug
1	192-4302	Fuel Pump Group

Rework Procedure

Note: Inspect all fuel spray down hoses and connections in order to prevent potential fuel leakage. If any hoses are replaced, ensure that the proper pressure rating was installed. The operating pressure rating should be 1725 kPa (250 psi).

Show/hide table



Illustration 1	g00730540

1. Remove the burner assembly and remove the blower assembly. Replace existing 102-2688 Nozzle (1) with the new 187-9608 Nozzle. Replace existing 102-2706 Flame Ring (2) with the new 191-5983 Cone.

Show/hide table



Illustration 2	g00734407

2. Remove existing 102-2736 Inlet Screen (3). Install the 187-9760 Plate. Refer to the dimension in Illustration 2 in order to drill the sight hole (6). Drill the hole through the side that is pointing to the rear of the screed.

Show/hide table



Illustration 3	g00730543

3. If your machine is equipped with a 12 V system, install the 191-1035 Plug (5). If your machine is equipped with a 24 V system, install the 191-1036 Plug (4) .

4. Replace the existing fuel pump with the 192-4302 Pump. Ensure that the pressure is set to 180 psi.

Note: See the instructions that are provided with the pump. (Install the bypass plug.)

Note: The technique for lighting is different in this system. The best results will occur if you follow the procedure below.

1. Energize the glow plugs for a 10 second interval.

2. Fully open the fuel valve.

3. Release the glow plug switch.