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Old 27-09-21, 22:36
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Hanno Spoelstra Hanno Spoelstra is offline
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Default C15 part numbers and modern replacements

For Chevrolet C15 4x2, pieced together from parts list, info on here, and internet searches.

This is work in progress - if anyone can add to this, please post it here.
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Old 27-09-21, 22:44
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Hanno Spoelstra Hanno Spoelstra is offline
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Default Wheel cylinder

Front wheel cylinder part no. 5300869, diameter 1-1/4"
Rear wheel cylinder part no. 5450071, diameter 1-3/8"

Quote:
Originally Posted by Grant Bowker View Post
C8, C8A and C15 follow a bit different pattern as they use more Chevrolet parts.
Bsed on parts list 175 dated January 1941 the C8 and C15 use 5300869 for the front, C8 uses 5300866 for the rear while C15 uses 5450071.

The Chevrolet Master Parts List 1928-1949 lists 5300869 as being front 1-1/4", used on all 1936-48 comm. and util. (except DS ES and FS - all 1 ton trucks). 5300866 is listed for 1936-48 comm. rear 1-3/16 and GD, HD, JD, KD, AL, BL (all 3/4 ton trucks with 11' brakes) and 5450071 for 1936-48 rear 1-3/8 GE, HE, JE, KE (all 3/4 ton trucks with 14" brakes), KF, AM, AN, BM, BN, DR, ER, FR (mixture of 3/4 and 1 ton). 1-1/4 seems to be the largest front wheel cylinder Chevrolet used in this period. For 1-1/2 and 2 ton utility (includes truck and school bus, both regular and COE cabs, single and dual rear wheel) they used a 1-1/2 rear wheel cylinder assembly 5450553. Original costs were $4.00 or less.
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Old 27-09-21, 22:48
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Default Rear 5450071

Quote:
Originally Posted by Hanno Spoelstra View Post
Rear wheel cylinder part no. 5450071, diameter 1-3/8"
Suppliers of new replacement parts:
Edited to add - note: https://www.finditparts.com/products...4/dorman-w4358 lists the following Part Interchanges:
  • General Motors 5450071
  • General Motors 5450565
  • Centric Parts 134.80027
  • Wagner Brake F4358
  • Aimco W906010
  • Coni-Seal WC257460
  • Raybestos Brakes WC4358
  • Wagner Brake WC4358

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Last edited by Hanno Spoelstra; 28-09-21 at 10:26. Reason: added info
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Old 27-09-21, 22:56
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Default Front 5300869

Quote:
Originally Posted by Hanno Spoelstra View Post
Front wheel cylinder part no. 5300869, diameter 1-1/4"
New replacement part:
I found that front cylinders can still be had NOS - this brake cylinder is used by the U.S. Chevrolet G085 1.5-ton truck:
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ID:	124925 Click image for larger version

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ID:	124932

Last edited by Hanno Spoelstra; 28-09-21 at 09:24. Reason: added info
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