Dumper          Excavators
   (Backhoe) 		Excavators
  (Shovel)		 Loaders   

Dozers     
Quality Control
Stage of Inspection Component / Operation Specification Attributes
to be checked		 Extent of check Acceptance Norms Method of Checking
  Raw Material -
Seamless Tube ST-52, ASTM- 106 B Dimensional, Chem
& Phy. Properties		 100% DIN2391, IS:2062 Measurement, Lab Test
Round Alloy Steel Dimensional, Chem
& Phy. Properties		 1 / Lot IS:1875, IS:2004,
IS:1570, IS:8500		 Measurement, Lab Test
Incoming Plate C-45 Dimensional 1 / Lot IS:2062 Measurement
Hex,
Flat, Square		 Mild Steel Dimensional 1 / Lot IS:2062 Measurement
Castings -
Non Ferrous		 CI, Al, PhBr, AlBr Dimensional, Chem
& Phy. Properties		 Sample Piece IS:7811, IS:28, IS:617 Measurement, Lab Test
  Honing Ra<0.3 Dimensional /
Surface Finish /
Ovality		 100% Approved/Mfg. Drg Measurement
  Machining Dimensions Dimensional 100% Approved/Mfg. Drg Measurement, Guages
Hardness 45-50 HRC HRC / BHN Value 100% Approved/Mfg. Drg Hardness Tester
In Process Chrome Plating 25-35 microns or
as required by customer		 Surface Finish /
Coating Thickness		 100% Approved/Mfg. Drg Coating Thickness Guage
  Other Components As per Drg Dimensions 100% Approved/Mfg. Drg Measurement, Guages
      Completeness 100%   Visual
    - Operation /
Movement		 100% Visual

Hydraulic Test Bench
(Test Procedure
as per IS:10585)
      Stroke Length 100% Approved Drg Measurement
Final Inspection Hydraulic Test   Load Test 100% 1.5 times of
Rated Pressure		 Hydraulic Test Bench
(Test Procedure
as per IS:10585)
      Drag Test 100%   Hydraulic Test Bench
(Test Procedure
as per IS:10585)
Cushioning Test 100% Hydraulic Test Bench
(Test Procedure
as per IS:10585)
Endurance Test --- Endurance Test facility to be
implemented shortly.

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