SHAFT 8F4609 - Caterpillar

(1) Maximum permissible length of adjustment (for mechanical adjusted track) ... 6.7 in.(170.2 mm) 1. Loosen the two clamp nuts (2). Turn adjustment rod to loosen or tighten track. Check for correct track curve (sag).2. Move the machine forward and back several times. This can change track tension. Check the track curve (sag).3. Do Steps 1 and 2 again if needed, until curve is correct. Tighten the two clamp nuts (2).
Do not make adjustment of track if track adjuster is at maximum permissible length. At this time, the track pins and bushings are to be turned, or new track link assemblies installed.
Hydraulic Adjusted Track
(2) Maximum permissible length of adjustment (for hydraulic adjusted tracks) ... 5.1 in.(130.0 mm) Torque for valves (1) and (3) ... 20 to 30 lb. ft.(2.8 to 4.1 mkg)1. Adjustment of track tension. Install grease to fill valve (3) until track curve (sag) is correct.2. Move the machine forward and back several times. This can change track tension. Check the track curve (sag).3. Do Steps 1 and 2 again if needed, until curve is correct.4. If necessary to release pressure of adjuster, loosen relief valve (1) one turn to remove pressure. When track curve (sag) is approximately correct, tighten relief valve (1). Check track.
Do not make adjustment of track if track adjuster is at maximum permissible length. At this time, the track pins and bushings are to be turned, or new track link assemblies installed.