Dieseltester

Adjusting Shims

Common rail injector adjusting Shims for Bosch and Denso injectors

 

Common rail injector adjusting Shims

Shims precision:
1.Precision is the key requirement for adjusting shims,the fiber-optical ruler is used to controll the grinding precision dimension within 0.002mm.
2.At least 5 times inspection is conducted in the dust-free workshop.
3.High precision digital display micrometer is used for the inspection.

Geometric tolerance of the calibration shims:
1.Geometric tolerance will directly affect the injector repair quality,the parallelism of the adjusting shims is the key requirement of the geometric tolerance,large shim will affect product tightness while small shims affects reliability and stability,we adopt high-precision double-face lapping machine to ensure the parallelism tolerance within 0.002mm.
2.One-step forming process to ensure the shims axiality.

Material quality and hardness:
Material quality and hardness will affect the shims durablity and stablity, we choose the high quality material and advanced thermal treatment equipment/technology.

Cleanliness:
Multi-channel ultrasonic cleaning to make sure the cleanliness, dust-free workshop packing and plastic case sealed packing.

Adjusting shims spec:

B10:  Ø 10.5 x 15.7   1.22-1.28 = 7specs   <0.01 mm/spec>
B11:  Ø 2.8 x 5.0     1.05-1.70 = 14specs  <0.05 mm/spec>
B15:  Ø 2.3 x 4.2     1.00-1.65 = 14specs <0.05 mm/spec>
B16:  Ø 4.8 x 7.7     1.00-1.13 = 14specs <0.01 mm/spec>
B17:  Ø 3.4 x 5.5     1.10-1.75 = 14specs <0.05 mm/spec>
B18:  Ø2.28           1.04-1.30 = 14specs  <0.02 mm/spec>
Total:77 types and 770 pcs

Option:
B8 :   Ø 19 x 22      1.25-1.35 = 11 specs <0.01mm/spec>
B9 :  Ø 18 x 22       0.95-1.15 = 22 specs <0.01mm/spec>  
B12: Ø 19 x 23.5     0.91-1.11 = 21 specs <0.01mm/spec>
                     1.28-1.34 = 7 specs <0.01mm/spec>
B19:  Ø 19.5 x 23     1.54-1.60 = 7 specs  <0.01mm/spec>

Denso shims:
B20:Ø 21.5 x 24.3    1.57- 1.30= 14 specs   <0.01mm/spec>

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