Selection of the Oil Change Interval
Oil Change Interval (Power Train) (1)(2)
|Power Train Oil Type(3)||Interval|
|AVS TDTO||1000 hr|
|(1)||The standard oil change interval in this machine is 1000 hours. An oil change interval of 2000 hours is available, if the recommended power train oil type that is listed in this table is met. Improvements in the power train oil types allow this increased oil change interval. This new interval is not permitted for other power train oil types.|
|(2)||Cat oil filters are recommended.|
|(3)||See the table in “Lubricant Viscosities for Ambient Temperatures” for more information.|
|(4)||TDTO-TMS (Transmission Multi-Season oil) exceeds the TO-4/TO-4M requirement for multigrade specification oil.|
Note: The oil change interval of 2000 Service Hours is only available with the usage of TDTO-TMS OIL in the power train of the D7E Track-Type Tractor.
Adjustment of the Oil Change Interval
Verification for an Oil Change Interval of 2000 Hours
This program consists of four oil change intervals of 500 hours. Oil sampling and analysis are done at 500 hours for each of the four intervals for a total of four oil samples. The analysis includes oil viscosity and infrared (IR) analysis of the oil. If all of the results are satisfactory, the 2000 hour oil change interval is acceptable.
If a sample does not pass the oil analysis, take one of these actions:
- Shorten the oil change interval to 1000 hours.
- Change to another power train oil type that is listed in Table 1. Repeat Program A with the other listed oil type until the 1000 service hour interval is met.
Reference: See Special Publication, SEBU6250, "AVSpare Machine Fluid Recommendations" for detailed information concerning S·O·S services.
Reference: Special Publication, PEDP7035, "Optimizing Oil Change Intervals"
Reference: Special Publication, PEDP7036, "S·O·S Fluid Analysis Cornerstone"
Reference: Special Publication, PEHP7076, "Understanding S·O·S Service Test"
Operate the machine in order to warm the power train oil. The machine must be level. Lower the attachments with slight down pressure. Engage the parking brake switch. Shut off the engine.
High Speed Oil Change, If Equipped
Open the left side compartment above the fender in order to locate the high speed oil change arrangement.
Use a 126-7538 Nozzle if the machine is equipped with the high speed oil change arrangement. This arrangement removes oil from the power train oil tank.
Procedure for Changing the Power Train Oil
Hot oil and components can cause personal injury.
Do not allow hot oil or components to contact skin.
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.
- Remove the drain plug in order to drain the power train oil. The drain plug is at the bottom of the main frame, as shown.
- Open the drain valve to the power train oil tank. Drain the oil into a suitable container.
- Close the drain valve.
- Remove cover (2) in the rear bottom guard.
Illustration 3 g02062414 Some components are removed for clarity.
- Loosen drain hoses (3) at the bottom of electric drive propulsion unit in order to drain propulsion motors (not shown). Loosen clamp (4). Drain the oil into a suitable container.
- Replace drain hoses (3). Tighten clamp (4).
- Install cover (2) in the rear bottom guard.
- Change the power train oil filter.
Reference: . See “Power Train Oil Filter - Replace” information for the procedure.
Power Train Oil Filter - Replace
- Open the right engine compartment and remove the power train oil filter that is near the radiator core.
- Install the new power train oil filter by hand. Instructions for the installation of the filter are printed on the side of each AVSpare spin-on filter.
- Close the right engine compartment.
Power Train Oil Screens - Clean
Screens should be removed and cleaned when the oil is drained. Drain the oil into a suitable container before removing any screen.
- Open the rear enclosure on the right side of the machine. Open the front enclosure on the right side of the machine.
Note: Perform the safe shutdown procedure of the machine.
- Tilt the cab to the intermediate position or the full tilted position. See “Cab-Tilt” in this manual for the proper procedure.
Illustration 5 g03716818
- Remove inlet screens (5) from power train oil pump (6).
- Clean the screens in clean, nonflammable solvent.
- Install the inlet screens. Replace seals, as needed.
- Lower the cab. See “Cab-Tilt” in this manual for the proper procedure.
- Close both of the enclosures on the right side of the machine.
- Open the access door to the fill pipe for the power train oil in the left front fender. Remove oil fill cap (8).
- Fill the power train oil system with oil.
Note: High Speed Oil Change, If Equipped. The coupler for the high speed oil change can be used to refill the power train oil at the port location. See Illustration 1.
Reference: Refer to Operation and Maintenance Manual, "Lubricant Viscosities and Refill Capacities" for the correct type of lubricant and for the capacity of the power train oil tank.
Reference: For additional information about oil types, see Special Publication, SEBU6250, "AVSpare Machine Fluid Recommendations" or consult your Cat dealer.
- Open the access door to the oil gauge for the power train oil. Always measure the oil level with power train oil dipstick (7).
- Maintain the oil level within the OPERATION ZONE marks on dipstick (7). The engine should be running at low idle. The power train should be at operating temperature. Refer to Operation and Maintenance Manual, "Power Train Oil Level - Check".
- Clean oil filler cap (8). Install the oil filler cap.
- Close the access door in the front left fender. Close the access door to the oil gauge for the power train oil.