SPACER 4328101 - Caterpillar

Relieving Track Tension
Hydraulic Adjusting Type
Remove any dirt or debris that could prevent retraction of the idler. Clean the track adjuster vent holes thoroughly.
Before attempting to separate the track or remove any part of the track adjusting mechanism, be certain the hydraulic pressure in the track adjusting cylinder is completely relieved and the cylinder (4) can be moved to the rear into the recoil spring front pilot (5).
HYDRAULIC TRACK ADJUSTER
1. Relief valve. 2. Fill valve. 3. Vent holes. 4. Cylinder. 5. Recoil spring front pilot.Relieve the pressure in the hydraulic track adjuster cylinder, WITH CAUTION as given in the following steps:
Because of the hydraulic pressure in the track adjuster cylinder, never visually inspect the vent holes (3) or valves to see if lubricant is escaping. Always watch the cylinder (4) to see if it moves to the rear into the recoil spring front pilot (5).
1. Loosen the RELIEF valve (1) one turn. Lubricant should escape from the vent holes just below the RELIEF valve. Wait momentarily. If the cylinder (4) does not retract, loosen the FILL valve (2) one turn.2. If the cylinder has not retracted, loosen the RELIEF valve until it contacts the underside of the guard. If the cylinder does not retract, loosen the FILL valve until it contacts the underside of the guard.3. If track tension is still evident, start the machine and move it backward and forward.4. If moving the machine has not relieved all the tension, put a drawbar pin between the sprocket and track. Back the machine slightly putting additional tension on the track to force the lubricant out of the vent holes.Screw Adjusting Type
SCREW TYPE TRACK ADJUSTER
1. Clamp bolts. 2. Screw assembly. 3. Adjusting nut.To loosen the track, loosen clamp bolts (1). Turn screw assembly (2) into the recoil spring adjusting nut (3).Filling And Bleeding The Hydraulic Track Adjuster
Use the following procedure to bleed the air on the initial filling of the hydraulic track adjuster cylinder.
HYDRAULIC TRACK ADJUSTER
1. Fill valve. 2. Relief valve. 3. Relief valve vent holes.1. Loosen the relief valve (2) one turn. Force SAE 30 lubricating oil through the fill valve.2. When the oil flowing out the relief valve vent hole (3) no longer contains air bubbles, close the relief valve. Continue filling the cylinder with oil until the track adjustment is correct. See the correct POWER TRAIN SPECIFICATIONS book for the correct track adjustment.3. Move the machine backward and forward to equalize the adjustment. Recheck the adjustment.4. Make subsequent track adjustments as outlined in the Lubrication and Maintenance Guide section of the Service Manual.Sprocket Segment Removal And Installation
SEGMENT REMOVAL
1. Solid pin. 2. Sprocket segment.1. Remove sprocket guards.2. All tension must be removed from the track. See subject RELIEVING TRACK TENSION.3. Place a solid pin (1) between two front teeth of sprocket segment.4. Move the vehicle backward to lift the track from the sprocket.5. Remove nuts, bolts and sprocket segment (2).6. Install sprocket segment with word "OUT" to outside. Put lubricant on bolt and nut threads and tighten all