COVER 4N4269 - Caterpillar

Illustration 1. Use wood blocks to protect the master link serrations.2. Inspect the serrations for damage. Any burrs or nicks must be removed with a small grinder. Do not reuse any split master links where the serrations are badly damaged or bent.3. Clean the threads inside the split link with a thread tap. This is necessary to get the correct bolt torque and clamping force when the master links and shoes are fastened together.4. Install plastic caps in the threaded holes to keep debris out. If the track will be moved around the shop frequently or is to be shipped, install the wood blocks.When the track is installed on the machine, use the procedure which follows to connect the master links:
1. Remove the plastic caps and wood blocks.2. With the track in place around the sprocket and idler(s), push the two halves of the split links together until they are fully engaged. If the reconditioned link joints are too stiff to do this by hand, apply force with a large hammer. With the serrations on one side of the master link fully engaged (no gaps), there must be no more than a 3.20 mm (.125") gap between the serrations of the other link. See Illustration 2.3. Apply a coating of 2P2506 Thread Lubricant to the threads, shank, and washer face of the master link bolts.4. Install the master link track shoe. When the master link track shoe is installed, all four bolts must turn easily enough to be turned all the way into their bores by hand. If the bolts will not turn by hand, the binding or misalignment must be corrected.5. Tighten the master link bolts to the specifications shown in the chart which follows.
Illustration 2.