Torque Adapter For Fuel Injection Line Nut
On Mack model chassis that are equipped with ASET AI, AMI or AC engines, access to tighten the injection line nuts at the cylinder head can be limited, particularly at the No. 3 injection line on ASET AC engines.
A fuel injection line nut torque adapter (Tool No. 85109006) properly tightens these nuts. The adapter is designed to access the injection line nuts so that correct torque value can be applied.
When using this adapter, the torque value to be applied as measured on the torque wrench must be reduced according to the lengths of the wrench and adapter as outlined in Figure 1.
Use the formula provided to calculate the correct torque value. See Figure 2 for the correct torque values for some of the most common torque wrench lengths.
To apply proper toque, the torque adapter tool must be in line with the torque wrench. (See Figure 3.) In addition, there is limited space to turn the wrench before contact with the exhaust manifold is made.
Be sure to reposition the wrench during the tightening process to ensure that interface with the manifold does not affect the torque reading.
Starting & Charging Problem Identifier
Caterpillar has made available the 271-8590 Analyzer Group (24v) to perform battery, electrical system and diode tests on 12v and 24v electrical systems for Caterpillar products.
The tool tests both flooded lead acid and absorbed glass mat battery types. Through an algorithm design and internal resistance loading, the tool tests the following battery pack configurations:
- Single battery, 6v or 12v,
- Two batteries in series, 24v,
- Two, three or four batteries in parallel, 12v, and
- Two banks in parallel with each bank in series, 24v.
The analyzer features a wide cold cranking ampere (CCA) range of 50 to 4000 CCA at 24v. A 15″ test cable assembly allows the technician to work in the cab while the analyzer is connected to the engine. Amp clamp connections allow the analyzer to use optional amp clamp cables for current drain tests and for starting and charging tests.
Digital circuitry controls the testing. The analyzer accepts CCA, CA, AHR, MCA, JIS and DIN units. The tool also has infrared communications capability for use with an optional wireless printer, and a PC interface port allows the technician to download updates to the analyzer.
Air Line Diameter Requirements
Hendrickson’s Tiremaax tire inflation system requires the correct diameter air line. To maintain adequate airflow, make sure that all air lines into and out of the controller assembly are 3/8″, and that all junctions of two or more /” lines are supplied by 3/8″ line. (See Figure 4.)
If you use the incorrect diameter air line, the leak indication sensitivity of the controller assembly is raised and the air flow rate to the tires is slowed.
Rear Shock Absorber Pull-Apart Failures
Mack announced that its CV and CL models equipped with Neway AD 369 tri-axle rear suspension may experience a rear shock absorber pull-apart failure. In this failure, the center of the shock pulls away from the shock absorber assembly when operating in severe applications.
A revised shock absorber (Part No. 14QK435) is available to eliminate this problem. If a rear shock absorber pull-apart failure occurs, make sure to replace all six shock absorbers.
Reuse the upper and lower shock mount hardware to install the replacement shock absorbers. Tighten the shock absorber mounting bolts to 323 ft.-lbs.
