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6270A Service Manual, Spare Parts Info

See the below web page to view or download the Service Manual for the 6270A Pressure Calibrator (updated May 2018 with additional CPS-20M maintenance information). It also includes information on the Contamination Prevention System (CPS-20M) and the Pressure Measurement Module Calibration Kit (PMM-CAL-KIT-20M). At the back of the manual are drawings with part number call-outs.

Sample page from Service Manual:

See the pdf attachment at the end of this article for a useful schematic from the Service Manual (with more notes added to it).

*** See end of this article for known changes to the 6270A Service Manual


A separate article is here for additional information on maintenance of the CPS,
6270A & 2271A - CPS-20M Maintenance


6270A Operation Manual (updated April 2018), Programmer's Manual and Specifications Manual are available on this page, 


Here is information on a User Seal Kit for 6270A
Part Number: 4584797
Description: 6270-SK-USER,6270 SEALS, USERS KIT

It includes 10 black o-rings for PCM and PMM, and 12 white/clear o-rings for PCM and PMM. These are also available separately.
Part Number,  Description
1785485, 759270-501,O RING -008 70 DUROM 0.176 ID .070 W BUNA  Y        
4621608, O-RING,AS568A-006,.114 IN. ID,.254 IN. OD,.070 IN. W,POLYURETHANE,A90 DURO  

Front Panel/Display: 


Port Manifold: Replacement Manifold Kits are available that include the manifold, 2 guide bushings PN 4404134 and 5 o-rings PN 1785485.

Part Number: 5032803, Description: MNFLD-8270-NPT,REPLACEMENT MANIFOLD, 8270A, NPT
Part Number: 5032815, Description: MNFLD-8270-BSP,REPLACEMENT MANIFOLD, 8270A, BSP
Part Number: 5032826, Description: MNFLD-8270-SAE,REPLACEMENT MANIFOLD, 8270A, SAE


Known changes to the 6270A Service Manual:

  1. PMM O-ring 1785510 has been changed to 4621608 (same o-ring as PCM)
  2. Front Panel Bezel with Decal 4815334 is not available, but consists of these two parts that are available:

               Part Number: 4488588
               Description:6270A-8001,DECAL, CHASSIS, FRONT PANEL, MODEL 6270A

               Part Number: 4380004
               Description :6270-2013,FRONT PANEL BEZEL

  1. Reference Designators 5 and 6 in Table 109 are incorrect. Table 109 should be edited with the below changes.mceclip0.png

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