GEAR AS 1329630 - Caterpillar

Illustration 1 g02524776
Location of the Oil Filters for the Power Train
The VIMS refers to the power train oil filters as "PT OIL FLTR".
(1) Oil Filter for the Transmission Charging Section of the Pump
(2) Oil Filter for the Torque Converter Charging Section of the Pump The power train oil filters are located on the left side of the cab underneath a platform door.
Illustration 2 g01126327
Oil Filter Construction
(3) Bypass Valve Spring
(4) Bypass Valve Spring
(5) Bypass Valve
(6) Plug
(7) Retainer
(8) Filter Housing
(9) Filter Element
(10) Passage
(11) Oil Outlet Passage
(12) Passage
(13) Oil Inlet Passage The power train oil filters filter any debris that is in the power train oil system. If the filter element becomes plugged, then the restriction to the oil flow will cause an increase in pressure inside the filter. The pressure oil fills passage (12). This causes bypass valve (5) to move against the force of springs (3) and (4). The oil then flows past the open bypass valve and through outlet passage (11) to the hydraulic oil reservoir in the output transfer gear case. When oil does not flow through the filter element, debris in the oil will result in damage to other components in the hydraulic system.Correct maintenance must be used to ensure that filter elements (9) do not become full of debris. This debris would stop the flow of clean oil to the hydraulic system.Both of the filters for the power train have a filter bypass switch. The filter bypass switches are wired in series and the switches are monitored by the VIMS. The message center will display a message when the VIMS detects restrictions in the filters. The filters are wired in series. If either one of the two filters becomes plugged, the VIMS will display a message. The message will be either a warning category 2 or a warning category 3. If the filters become plugged for more than 30 seconds, the warning category will be a warning category 2. If the filters remain plugged for more than 120 seconds, the warning category will change from a warning category 2 to a warning category 3. The "PT OIL FLTR PLGD" message will be displayed when the power train oil filters become plugged. The first line of the message center module will display the message. Instructions for the operator will be displayed on the second line of the message center module.