TUBE AS 1319650 - Caterpillar

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Group Number 2
The retainer bolts for the spindle to strut retainer may not be properly tightened on certain trucks. On these trucks, with the extended life brake package, the bolts may not have been properly tightened on the torque and turn operation leading to the possibility of loose bolts. The conformance to the torque and turn portions of the tightening procedure cannot be evaluated by a static inspection torque after assembly. Inspect the joint for looseness or damage. Remove and replace the outer ring of 8C-3236 Bolts (1), one at a time. Refer to Image 2.1.1. Reinstall new bolts and flat washers, and tighten to the correct torque following KENR8579, Disassembly and Assembly, "Front Suspension (Cylinder)-Install", Illustration 9, and the torque instruction in Step 8, before proceeding to the next bolt.
Once the outer ring of bolts has been replaced and tightened to the specified torque requirements, you may proceed to the inner ring of bolts (2). Refer to Image 2.1.1. These bolts do not have a torque turn requirement so they may be checked using a static torque check. The torque that the fastener, threaded connector, etc., shall withstand without movement. Static inspection torque provides an indication that minimum assembly requirements have been achieved. Each bolt of the inner circle of bolts should be checked to a static torque of 1400 Nm. If movement is found on any bolt, tighten that bolt to the D&A assembly specification (1600+/-200 Nm). If the bolt does not reach the proper assembly spec, replace that bolt and tighten to the required torque specification (1600+/-200 Nm). If these bolts are found to need replacement, replace that bolt and tighten to the required torque specification. If these bolts are found to need replacement, replace one at a time and do not remove or replace any others until the bolt found to be nonconforming per the static torque check has been replaced and re-tightened to the correct torque specification.
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