24-09-2014, 04:50 PM
ABSTRACT Training is an investment and should be able to get due returns in terms of better quality of workmen and engineers for future. PTL today is a manufacturer of a wide range of quality products like Tractors, Harvester Combines and Fork lifters etc. The product brand of PTL is �SWARAJ� which is one of the best selling company of agricultural implements in the market and that is why I preferred to have my training at this unit. I underwent my training at the TRACTOR DIVISION situated at Industrial area Mohali as a plant visit. It helped me to enhance my knowledge. I learnt many technical and problem solving techniques and chance do alive project on��WHEN GEAR SHIFTING LEVER NOT COMING TO CENTRE OF NEUTRAL POSITION ON ITS OWN�\'. I am very thankful to the training faculty of our campus and technical operators of PTL for this cooperation. Detail of Project are given below : - � DESCRIPTION OF THE PROBLEM � HISTORY OF THE PROBLEM � OBSERVATION OF THE PROBLEM: � OBSERVATION OF VARIATION: � CAUSE & EFF
ABSTRACT
Training is an investment and should be able to get due returns in terms of better quality of workmen and engineers for future.
PTL today is a manufacturer of a wide range of quality products like Tractors, Harvester Combines and Fork lifters etc. The product brand of PTL is ‘SWARAJ’ which is one of the best selling company of agricultural implements in the market and that is why I preferred to have my training at this unit.
I underwent my training at the TRACTOR DIVISION situated at Industrial area Mohali as a plant visit. It helped me to enhance my knowledge. I learnt many technical and problem solving techniques and chance do alive project on’’WHEN GEAR SHIFTING LEVER NOT COMING TO CENTRE OF NEUTRAL POSITION ON ITS OWN’\'. I am very thankful to the training faculty of our campus and technical operators of PTL for this cooperation.
Detail of Project are given below : -
· DESCRIPTION OF THE PROBLEM
· HISTORY OF THE PROBLEM
· OBSERVATION OF THE PROBLEM:
· OBSERVATION OF VARIATION:
· CAUSE & EFFECT DIAGRAM OF ALL RELEVANT &PROBABLE BRAINSTORMED
· REVISED CAUSE & EFFECT DIAGRAM OF ALL POSSIBLE CAUSES
· PROBABLE CAUSES
· CAUSE VERIFICATION
· CONCLUSION OF TRAINING
GURSIMRAN JIT SINGH
Roll No. 100761133034
PROJECTS DONE AT
MAHINDRA & MAHINDRA SWARAJ TRACTORS
DURING 6 MONTHS INDUSTRIAL TRAINING
Description of the problem
The gear shifting lever not coming to the center of the neutral position on its own. Problem reported at Road Test and Final Quality Post.
History of the problem
Source of data – QP4/Road Testing
Month wise Defect %
(This graphical data shows that it is a consistent problem.)
Inference: Problem observed only in 855XM & in both shifts
Observation of the problem:
2.2 Observation of symptoms:
When the gear shifting lever is displaced from centre of neutral position, it should come back to the centre because of the spring action. But the gear shifting lever was not coming back to the centre of the neutral position on its own.
Observation of variation:
Required
Required
Actual
Exploded Views & Contact Diagrams
Cause & Effect Diagram of All Relevant &PROBABLE Brainstormed Causes
REVISED Cause & Effect Diagram of All Possible Causes
Probable causes
1. Cross Rod fouling with Gear shifter housing
2. Wrong Oil seal fitted
3. Alignment of gear lever not ok
4. Wrong spring assembled on cross rod
5. Oil Seal pressing method wrong.
6. Gear shifter Housing Bore undersize.
7. Cross Rod diameter oversize.
Cause verification
S. NO.
Probable causes
Testing and observations
Remarks
1.
Cross Rod fouling/ tight with Gear shifter housing
10nos top cover sub-assy checked for tightness/fouling
Found OK
2.
Wrong Oil seal fitted
10nos top cover sub-assy checked for oil seal fitted
Found OK
3.
Alignment of gear lever not ok
10nos cross rod checked for alignment
Found OK
4.
Wrong spring assembled on cross rod
10nos top cover sub-assy checked for spring assembled
Found OK
5.
Oil Seal pressed in inclined position.
10nos top cover sub-assy checked for oil seal pressing position
Found OK
6.
Gear shifter Housing Bore undersize.
Spec : 18 +0.138/+0.095 , observed within specification
Found OK
7.
Cross Rod diameter oversize.
Spec : 18 -0.115/-0.158 , observed within specification
Found OK
Inference:All Parameters were found to be well within the specifications and thus OK.But the problem was still there, hence good Bad Analysis conducted to solve the problem
Objective of the Experiment :
To find out the contributing factor for Gear shifter not self-centering.
LEVELS
1
Component from Good Vehicle