CYLINDER GP-RIPPER 4Z6363 - Caterpillar

Introduction
This troubleshooting guide can be an aid for service personnel to find the cause of existing problems. Several common problems are covered in the guide, but these problems are not arranged in any particular sequence.Identify your particular problem from the Troubleshooting Problem List, then go directly to that problem in the guide. When you begin the procedure for your problem, begin at Step 1 and follow through the step by step procedure. The steps for a particular problem provide a definite sequence to be followed for a logical, one by one elimination of many variables. These steps are arranged in order from the more probable/easiest to check, to the less probable/more complex to check.Whenever the cause of the problem is found and corrected, stop the test. Do NOT continue through the complete procedure.1. The Governor Does NOT Open On Starting 222. The Governor Moves To Maximum Fuel Injection When The Power Supply Is ON 233. The Engine Overspeeds Upon Starting 234. The Governor Is Unstable 235. Speed Is Reduced Under Engine Load 246. The Governor Linkage Is Hunting 24Troubleshooting Problems
Problem 1. The Governor Does NOT Open On Starting Probable Cause:1. No signal from the magnetic pickup. Verify with the AC voltmeter or oscilloscope. There is excessive pickup clearance. Adjust the clearance to [0.5 to 0.8 mm (.02 to .03 in)] if necessary.Check the resistance at the cable socket of the