SWITCH GP-START 2679950 - Caterpillar

Illustration 1 g01098473
Transmission Hydraulic Control in the NEUTRAL position and with the Engine Stopped.
(1) Transmission hydraulic control relief valve
(2) Torque converter inlet relief valve
(3) Torque converter
(4) Torque converter outlet relief valve
(5) Transmission oil filter
(6) Clutch solenoid modulating valve for the Number 1 clutch
(7) Clutch solenoid modulating valve for the Number 4 clutch
(8) Clutch solenoid modulating valve for the Number 2 clutch
(9) Clutch solenoid modulating valve for the Number 5 clutch
(10) Clutch solenoid modulating valve for the Number 3 clutch
(11) Clutch solenoid modulating valve for the Number 6 clutch
(12) Transmission oil pump
(13) Suction screen and magnet
(14) Oil sump
(15) Transmission lubrication
(16) Oil cooler
Personal injury or death can result from sudden machine movement.Sudden movement of the machine can cause injury to persons on or near the machine.To prevent injury or death, make sure that the area around the machine is clear of personnel and obstructions before operating the machine.
Personal injury can result from hydraulic oil pressure and hot oil.Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.Make sure all of the attachments have been lowered, oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.
Escaping fluid under pressure, even a pinhole size leak, can penetrate body tissue, causing serious injury, and possible death. If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury.Always use a board or cardboard when checking for a leak.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.Dispose of all fluids according to local regulations and mandates.
Operational Checks
Operate the machine in each direction and in all speeds. Note the noises that are not normal and find the sources of the noises. If the machine is not operating correctly, refer to the "Troubleshooting Problem List" below.Make sure that you check for any service codes that have been generated before troubleshooting a problem.Reference: For more information on checking for service codes with the Caterpillar Monitoring System, refer to the Service Manual module Testing and Adjusting, "Using Caterpillar Monitoring System to Determine Diagnostic Codes" for the machine that is being serviced.Reference: For more information on checking for service codes with the Caterpillar Electronic Technician (ET), refer to the Service Manual module Testing and Adjusting, "Using Caterpillar Electronic Technician (ET) to Determine Diagnostic Codes" for the machine that is being serviced.Troubleshooting Problem List
Torque converter pressure is high.
Torque converter pressure is low.
The torque converter overheats.
The torque converter does not respond correctly