Bobcat Compact Track Loader T870

Diesel Exhaust Fluid (DEF) / AdBlue® Filter – Replace the diesel exhaust fluid (DEF) / AdBlue® filter. The engine exhaust system is equipped with a selective catalytic reduction (SCR) system. The SCR is an emissions reduction system that removes nitrogen oxides from the exhaust gases.

The machine will periodically perform a process to clean sulfur oxides from the SCR system. This process is called DeSOX.

The SCR system requires Diesel Exhaust Fluid (DEF) / AdBlue® to function correctly.

NOTE: Diesel exhaust fluid (DEF) and AdBlue® are different names for the same fluid. See your Bobcat dealer for more information.

The SCR system will use one tankful of DEF / AdBlue® for approximately two to four tankfuls of diesel fuel.

The DEF / AdBlue® level indicator is located on the left panel.

1. Stop the engine. NOTE: The engine must be stopped with the key switch in the STOP position when filling the DEF / AdBlue® tank.

The DEF / AdBlue® fill cap is located on the left side of the machine. 2. Remove the fill cap.

Engine / Hydrostatic Drive Belt – Perform at first 50 hours, then as scheduled. Check for wear or damage. Adjust or replace as needed.

The drive belt does not need adjustment. The belt has a spring loaded idler that constantly maintains the correct belt tension. The spring loaded idler stop adjustment, detailed below, is critical for long belt life.

1. Stop the engine and open the rear door.

2. The spring loaded idler is located above the battery on the left side of the engine.

3. Loosen the spring loaded idler adjustment bolt.

4. Allow the stop arm to contact the top of the spring loaded idler.

5. Tighten the spring loaded idler adjustment bolt to 105 – 115 N•m (78 – 85 ft•lb) torque.

Operate the engine until coolant reaches normal operating temperature. Stop the engine.

The oil drain hose is located behind a cover under the right rear corner of the loader (Inset).

Remove two cover mounting bolts.

Loosen one cover mounting bolt and slide the cover to the rear of the loader to remove.

Remove the oil drain cap from the oil drain hose and drain the oil into a container. Recycle or dispose of used oil in an environmentally safe manner.

Install and tighten the oil drain cap.

Install the cover and the cover mounting bolts. Tighten all bolts.

Remove the oil filter and clean the filter base.

Hydraulic Hoses and Tubelines – Check for damage and leaks

Parking Brake and Joysticks – Check for correct operation

Track Drive Sprocket Nuts – Check for loose sprocket nuts and tighten to correct torque

Track Tension – Check tension and adjust as needed

Park the loader on a level surface

Raise one side of the loader and put jackstands at the front and rear of the loader frame so that the track is about 76 mm (3 in) off the ground

Measure the track sag at either middle track roller. The correct gap is 13 mm (1/2 in)

Warning: This procedure requires the use of a spare 19mm (0.75 in) coolant hose approximately 600 mm (24 in) long.

Pinch off the coolant hose attached to the engine oil cooler using a locking hose pinching plier or similar tool

Remove the clamp and disconnect the hose from the engine oil cooler fitting

Quickly install the spare 19 mm (0.75 in) coolant hose onto the engine oil cooler fitting

Drain the coolant into a container

Remove the coolant fill cap to drain the coolant faster

Remove the spare 19 mm (0.75 in) coolant hose from the engine oil cooler fitting when the coolant has drained