LINK AS-TRACK 2974789 - Caterpillar

Track Roller
(1) Lock. (2) Inner end collar. (3) Bearings. (4) Outer end collar. (5) Shaft. (6) Duo-Cone seals. (7) Track roller.Track Roller Lubrication
If lubricant is added with the roller removed from the machine, shaft (1) must be in a horizontal position. The slot, in the end where the 5M2080 Nozzle is installed, must be down.
Track Roller
(1) Shaft. (2) Duo-Cone seals. (3) Plug. (4) Reservoirs. (5) Center passage.Lubricant is sent into center passage (5) through the 5M2080 Nozzle. The lubricant fills reservoirs (4) in the rollers. When the reservoirs are full, the pressure of the oil causes the air and extra lubricant to go out the relief threads on the nozzle.When the lubricant does not have any bubbles, remove the nozzle and install the plug. Tighten the plug to a torque of 170 20 N m (125 15 lb ft)Front Idlers
The front idlers put the tracks in position in front of the track rollers. They also keep the tracks in alignment with the sprockets.The adjustment of the tracks is done by the movement of the front idlers. The track adjusters move the front idlers and hold them in position.
Front Idler
(1) Fill plug. (2) Duo-Cone seal. (3) Bearings. (4) Bearing. (5) Shims. (6) Plate. (7) Outer plate. (8) Idler. (9) Shaft. (10) Track roller frame.The position of the front idlers is controlled by shims. The front idlers must have correct alignment with the track roller frames.Front Idler Lubrication
If lubricant is added with the idler on the machine, the idler must be in the LOW position.If lubricant is added with the idler removed from the machine, the shaft (4) must be in a horizontal position.Lubricant is sent through the 5M2080 Nozzle into center passage (3). The lubricant fills reservoirs around shaft (4). When the reservoirs are full, the pressure of the oil causes the air and extra lubricant to go out the relief threads in the nozzle.When the lubricant does not have any bubbles, remove the nozzle and install plug (1). Tighten the plug to a torque of 170 20 N m (125 15 lb ft)
Front Idler
(1) Plug. (2) End bearing. (3) Center passage. (4) Shaft. (5) Duo-Cone seals.Front Idler Position
The front idler has two positions for operation. A HIGH position for equipment used at the rear of the machine. The LOW position when equipment is used at the front of the machine.The method to change the idler from LOW to HIGH is as follows:1. Remove the idler and note the position of notch (recess) (3) with idler in the LOW position.
Idler In Low Position
(1) Collar. (2) Bearing. (3) Notch (recess).2. Remove the bolts. Lift collars (1) on each side of the idler. Turn bearings (2) on each side of the idler and the shaft 180°. Notch (3) is now toward the rear of the machine.
Front Idler Position
(3) Notch.3. Turn the idler 180° in the direction as shown by the arrows. The idler is now ready to be installed in the HIGH position.
Front Idler Position
(3) Notch.4. Notch