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PRODUCT SUPPORT PT TRAKINDO UTAMA

SOS MEMO

Department : Oil Laboratory Area : HEAD OFFICE General Limit of Particle Quantifier SOS Laboratory

Subject Owner

Doc. No: 002/XII/EXTSOS/08

Issued Date To

04 December, 2008 All Customers

GGeenneerraall LLiim miitt ooff PPaarrttiiccllee QQuuaannttiiffiieerr ((PPQQ IInnddeexx))

CAUTION  These guidelines should only be used if there is no historical PQ data from the compartment. Trend analysis or specific PQ guidelines, by compartment, are needed to evaluate PQ results. Increasing PQ 50% relatively from previous trends should be considered a significant factor. The PQ is used as a supplement to the core program (wear metal analysis & particle counting).

General Limit of Particle Quantifier (PQ Index)  Compartment 

No Action Required 

Monitor Condition 

Action Required 

Engine 

0 to 28 

29 to 35 

Over 35 

Transmission PS 

0 to 44 

45 to 55 

Over 55 

Hydraulic System 

0 to 28 

29 to 35 

Over 35 

Axle/ Differential 

0 to 308 

309 to 385 

Over 385 

Final Drive (Wheel Type) 

0 to 216 

217 to 270 

Over 270 

Final Drive (Track Type) 

0 to 594 

595 to 743 

Over 743 

Tandem & Swing Drive 

0 to 594 

595 to 743 

Over 743 

Sources : 1. Caterpillar SOS Services Evaluation of the PQ Debris Monitor 2. Introduction of Ferrous Debris Monitor, Butler Machinery Company

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