TUBE AS 2T1423 - Caterpillar

1. Allow the elevator to turn slowly with the engine idling. Use a pressure wash system to clean the chain.2. Direct the spray at the lower idler area of the chain.Lubrication
Lubrication of the chain is not recommended.Lubricants tend to attract abrasive particles creating a gritty sludge which acts as a lapping compound that clogs the chain and rapidly increases wear.Only when a scraper is not going to be used for an extended period of time should a lubricant be used. This is preferable to allowing the joints to seize.
Contact with moving chain parts may cause serious injury or even death. Do not lubricate a moving chain. Stop the chain before applying lubricant.
If lubrication must be applied, thoroughly clean the chain as described in the topic entitled Cleaning. Then apply a lightweight oil (10W or lighter) to the chain allowing the oil to penetrate each joint.In some cases cleaning the chain with a petroleum based cleaner may provide enough protection from corrosion that oil may not be needed.Daily Chain Inspection
1. Check the cutting edges. If they are worn to the point that the mounting surface is being worn they should be rotated or replaced. 2. Check the throat opening (the measured distance between the end of the flights and the cutting edge). For most soils the throat opening should not be less than 38.10 mm (1.5"). For loose sand this distance may be reduced to 12.70 mm (0.5") minimum. Adjust as needed. See the Operation and Maintenance Manual for adjustment instructions.Periodic Chain Inspection
These checks should be performed before the first 175 hours, or two months, of operation. After that, a complete inspection and adjustment should be performed at maximum intervals of 500 hours.If the Periodic Chain Inspection indicates the chain needs to be replaced see the topic entitled Chain and Sprocket Installation.Chain Rollers
1. Check the chain rollers to be sure they turn freely by hand. Break free or replace as needed.Chain Elongation
2. Check the distance between 7 links (8 pins) as shown by dimension (A) in the illustration. Compare that value to the value given in the chart for your model. If it exceeds the maximum, replace the chain and the sprockets. Chain Sag
B. Direction of travel. C. Backbending of flightsBackbending of flights is caused by too much sag in the chain. This will cause the chain to wear rapidly. 3. Measure the sag in the chain with the adjustment arm height at its lowest position. Compare the value of (D) to the values shown for your machine in the following chart. If (D) exceeds the value given in the chart remove a half-link from the chain. When the first half-link is removed, the sprockets should also be rotated. Usually before the third half-link is removed the chain will be worn out.Adjust the adjustment arm height until the value of (D) matches the dimensions given in the Chain Sag Adjustments chart that follows. See the Operation and Maintenance Manual for the adjustment procedure. Check both sides. The difference in