HOUSING ASSEM. 5D6205 - Caterpillar

MASTER LINK AND MASTER SHOE
15. Master shoe. 16. Bolts. 17. Master link.Each pin and bushing assembly is sealed and has its own lubrication, the result is no internal wear on the joint. The interval for the turning of the track pins and bushings is much longer because the only wear will be on the outside of the bushings and the links.Troubleshooting
This is intended as a reference for locating and correcting problems that may occur in the power train. In the event further investigation is necessary, use of the 7S8875 or 8M2736 Hydraulic Test Box will be helpful. Pressure tap locations and testing and adjusting procedures are defined in 977 POWER SHIFT TRANSMISSION TESTING AND ADJUSTING, Form No. REG01613 and REG01662.In all instances, visual checks of the machine should be made first and then operational checks before proceeding to instrumentation tests.Visual Checks
1. Check the oil level of the transmission and steering hydraulic system.2. Check the oil level of the final drives.3. Inspect all external oil lines, connections and external valving for leaks or damage.4. Check the transmission control linkage and steering and brake control linkages for damage and/or adjustment.5. Check to be certain the track is not too tight.6. Rotate the universal joint in both directions by hand. It should rotate freely except when cold oil causes clutch drag. If it does not turn, disconnect the universal joint and determine if the torque converter or range transmission is locked.7. Check the magnetic strainer, filter and scavenge pump screen for foreign material. a. Iron or steel particles indicate possible transmission, transfer gear or bevel gear failure.b. Bronze-colored particles indicate a clutch failure, either a steering clutch or transmission clutch.c. Bright steel particles in the filter indicate a pump failure.d. Aluminum particles indicate a torque converter failure.e. Rubber particles indicate a blown seal or ruptured hose.If metal or rubber particles are found, clean all components in the hydraulic system and recondition the damaged components. If no particles are found, the machine can usually be operated without damage to the components.Operational Checks
With the engine running, move the transmission speed selector lever to all positions. The detents should be felt in each position.Operate the machine in all speeds. Listen for unusual noises and determine their source. Lock the brakes and stall the torque converter in each speed. If the universal joints turn, the transmission clutches are slipping. Refer to the OPERATIONAL CHECK LIST for "problems" and "probable causes."Operational Check List
Transmission
PROBLEM: Does not operate in any speed or slips in all speeds. PROBABLE CAUSE:1. Low oil pressure caused by: a. Low oil level.b. Control linkage broken, loose or incorrectly adjusted.c. Oil pump or oil pump drive failure.d. Air leaks on inlet side of pump.e. Leakage within the transmission.f. Hydraulic system pressure relief valve incorrectly adjusted or stuck open.g. Load piston, check valve, modulating reducing valve or differential valve spools stuck.2. Mechanical failure in transmission.3. Torque converter failure.4. Transfer gear failure or bevel gear failure. PROBLEM: Operates in reverse speeds only or forward speeds only.