1999/02/15 Caterpillar

Proper Throttle Line Servicing Procedure {1269}

Usage:

AP-1055B (8BM),
AP-1000B (7HN),
BG-2455C (6TN),
BG-260C (8GN) Asphalt Pavers

When servicing 115-8369 Throttle Lines Group on the AP-1000B/BG-260C or the 117-8176 Throttle Lines Group on the AP-1055B/BG-2455C the following must be done to ensure that the throttle operates correctly.

1. Locate the throttle solenoid valve, which is on the right side of the hydraulic tank and mounted on the bottom outboard side of the 119-4360 Control Manifold. On the bottom of the manifold, locate hoses to the correct side of the throttle cylinder. The "TR" port is closest to the rear of the machine. The hose coming out of the "TR" port should be routed to the rod end of the throttle cylinder. The hose coming out of the "TB" port (closest to the engine) should be routed to the head end of the throttle cylinder.

2. The two electrical connections on the throttle solenoid valve must be located correctly. The gray 352 wire must connect to the coil closest to the "TR" port. The orange 353 wire needs to be connected to the coil closest to the "TB" port. Once connected, ensure that the harness has the proper strain relief.

3. This system uses reduced auxiliary system pressure. This reduced pressure should be set at 3615 ± 361.5 kPa (525 ± 25 psi). If it is not set properly, refer to KENR3508 for the AP-1000B/BG-260C or KENR2886 for the AP-1055B/BG-2455C for the instructions.

Caterpillar Information System:

1999/02/15 New Brake Disc Wear Specifications {4250}

1999/02/15 New Thrust Washer Improves Service Life Of Differential Group {3258}

1999/02/15 Correction To Operation & Maintenance Manual SEBU6955 {0374,0375,7560}

1999/02/15 Bolts, Washer, And Spacers Grouped Into Fastener Groups In Engine Cylinder Head Groups {1100}

1999/02/15 Improved Brake Hubs Now Available For Certain Off-Highway Trucks {4061,4251}

1999/02/15 Thrust Buttons For Planetary End Housing Assembly Salvage Now Available {3150,3169}

1999/02/15 New Right Side Platform Design Will Reduce Cracking Between Platform And Cowling {7253}

1999/02/15 Supplement To Correct Seal Ring Positioning {3159,7555}

1999/02/15 Special Instruction, REHS0151-01, Available For Procedure For Reinforcing And Bolting On Guide Blocks {4198}

1999/02/15 Spacers Now Used On 1R-1210 Midwheels {4192,4150}

1999/02/08 New VIMS Application Guide Available {7601,0374}

1999/02/08 Correct Seal Usage Improves Service Life {7555}

1999/02/15 Filters On X-Series Machines {1054,1308,1261,5068}

1999/02/15 Purging Lines Have Been Added To Conveyor Lines Group {5264,5643,6631}

1999/02/15 Emulsion System Changes {5615}

1999/02/15 New Actuator Motors Available for Power Screed Options {6640}

1999/02/22 Supplement To Correct Torque Specifications On Differential And Bevel Gear {3258,3270,3281,3283,3284}

1999/02/22 Improved Steering Spherical Race Bearing Available {4303,4300}

1999/02/22 Production Process Change Eliminates Anti-Rotation Retaining Pin In Rear Wheel Station For Certain Off-Highway Trucks {4208,4234}

1999/02/22 Use Special Care With 143-3629 O-Ring Seals {1071}

1999/02/22 Vibratory Relief Pressure Increased To Shorten Vibratory Start And Stop Times {5652}

1999/02/22 New Scraper Available For Asphalt Compactors {6607}

1999/02/22 3116 Engine Oil Capacity {1326}

1999/02/22 PS-360B Tires {4203}