ELBOW-EXHAUST 4W5945 - Caterpillar

Problem: Bronze or black coarse material is found.
Probable Cause:
Worn clutches in the transmission.
Failure of a thrust disc.Problem: Thin strands that are elastic are found.
Probable Cause:
Worn clutches in the transmission.Problem: Iron or steel chips are found.
Probable Cause:
Broken components in the torque converter updrive gears.
Broken starting motor gear or flywheel gear on the engine.Problem: Aluminum particles are found.
Probable Cause:
Worn housings, load pistons, or selector pistons in the pressure control group.Check: Check the torque converter screen and the oil that is inside the torque converter updrive housing.
Illustration 5 g03685118
(6) Torque converter screenRemove torque converter screen (6) and drain the oil from the torque converter updrive housing. Inspect the oil for foreign material. Measure the total amount of oil that is removed. Inspect the torque converter screen for foreign material and/or restrictions.Problem: More than 15 L (4 US gal) of oil is drained from the torque converter updrive housing.
Probable Cause:
Illustration 6 g01053436
(3) Transmission charging pump section (4) Torque converter scavenge pump section
Mechanical failure of torque converter scavenge pump section (4) .
Restriction in torque converter screen (6) .
Mechanical failure of the torque converter.Problem: Rubber particles are found.
Probable Cause:
Seal failure.
Hose failure.Problem: Iron or steel chips are found.
Probable Cause:
Broken components in the torque converter updrive gears.
Broken starting motor gear or flywheel gear on the engine.Problem: Bronze particles are found.
Probable Cause:
Worn lockup clutch in the torque converter.Problem: Aluminum particles are found.
Probable Cause:
Mechanical failure of the torque converter.Check: Check the oil that is inside the transmission and the output transfer gear case.
Illustration 7 g01053449
(7) Drain plug for the transmission and output transfer gearsRemove drain plug (7) from the bottom of the output transfer gear case. All of the oil will drain out of the transmission planetary and the transfer gears. Inspect the oil for foreign material.Problem: Rubber particles are found.
Probable Cause:
Seal failure.
Hose failure.Problem: Shiny steel particles are found.
Probable Cause:
Illustration 8 g01053436
(3) Transmission charging pump section (4) Torque converter scavenge pump section
Mechanical failure of transmission charging pump section (3) .Problem: Bronze or black coarse material is found.
Probable Cause:
Worn clutches in the transmission.
Failure of a thrust disc.Problem: Thin strands that are elastic are found.
Probable Cause:
Worn clutches in the transmission.Problem: Iron or steel chips are found.
Probable Cause:
Broken components in the transfer gears or in the transmission planetary.Problem: Aluminum particles are found.
Probable Cause:
Worn housings, load pistons, or selector pistons in the pressure control group.Note: If any of the particles listed in the checks are found during a visual check, all components of the power train hydraulic system must be cleaned. Do not use any damaged parts. Damaged parts must be removed and new parts must be installed.