Page 128 - TPM A Route to World-Class Performance

The TPM improvement plan 107

Table 5.2 Problem solving: leakages

Cause Remedy
1 Excessive vibration Cure cause
2 Unabsorbent mountings Refit new mountings
3 Insufficient mountings or supports Fit extra
4 Wrong grade/type component fitted Fit correct grade
5 Poor fitting Refit correctly
6 Overheating Seek and cure cause
7 Technical ignorance/innocence Retrain
8 Material breakdown Replace
Vibration is one of the major causes of fittings or fixings working loose and giving rise
to leaks. Other items contribute, such as poor fitting, or overheating, which causes
seals first to bake and then crack.
To identify leaks:
* In the case of liquids: puddles will form
* In the case of gases: noise, smell or bubbles when tested with soapy water.

Table 5.3 Problem solving: overheating

Cause Remedy
1 Excessive lubrication Remove excess
2 Incorrect lubricant Replace with correct
3 Lubrication failure/contamination Check cause and remedy
4 Low lubricant level TOP UP
5 Poor fitting Refit correctly
6 Excessive speed above standard Reduce speed to standard
7 Overloading Reduce loading
8 Blockages in system Clean and flush system
9 Excessive pipe lengths or joints Redesign system
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Table 5.4 Problem solving: overheating and lubrication

When overheating can be attributed to a lubricating problem, it is always best policy to
remove all lubricant and replace with new after the problem has been cured. Lubricant
which has overheated starts to break down and will not perform as it should.
Identification of overheating:
Visual Items that have overheated will discolour or give off smoke.
* Smell In many cases overheated items give off fumes which can be smelt.
* Touch By touching items suspected of overheating one can tell, but caution
must be exercised in the first instance. A hand held close to the item
will indicate whether it would burn if touched.
e Electvical/ Many items of equipment have built-in temperature-sensing devices
Visual and these should be monitored regularly. An awareness of the
significance of the temperature readings is essential.