Bigred82576 Posted September 5, 2018 Share Posted September 5, 2018 Hi there I have a 1958 Mack b81sx where can can I find a parts break down of the axles, I need pinion seals and gaskets. Vin # b81sx1654. axle #’s F/R 11kha556p20. R/R 11kha4134ap20. 815 gear ratio any help would be appreciated thank you. Quote Link to comment Share on other sites More sharing options...
Vladislav Posted September 5, 2018 Share Posted September 5, 2018 The pinion seals must be the same as CRD92/93 carriers had which were used on R-models and many newer Macks. Try checking Stemco web site. They have online catalog for hub and pinion seals with sizes and discription. From what I have in my copybook you seals should be : Front input Mack 88AX458 Stemco 429-0002 4.5x3.5" Front output 88AX456 429-0008 3.537x2.751 Rear input 88AX457 429-0009 3.996x2.751 If you were saying your truck is B61 I'd say go with the numbers I posted. But you B81SX might have heavier carriers . So better slick under the chassis with a caliper and relate the sizes. Vlad 1 Quote Никогда не бывает слишком много грузовиков! leversole 11.2012 Link to comment Share on other sites More sharing options...
terry Posted September 5, 2018 Share Posted September 5, 2018 3 hours ago, Vladislav said: The pinion seals must be the same as CRD92/93 carriers had which were used on R-models and many newer Macks. Try checking Stemco web site. They have online catalog for hub and pinion seals with sizes and discription. From what I have in my copybook you seals should be : Front input Mack 88AX458 Stemco 429-0002 4.5x3.5" Front output 88AX456 429-0008 3.537x2.751 Rear input 88AX457 429-0009 3.996x2.751 If you were saying your truck is B61 I'd say go with the numbers I posted. But you B81SX might have heavier carriers . So better slick under the chassis with a caliper and relate the sizes. Vlad A B81 could have the 50,000 rears, takes a different carrier, different seals maybe. terry Quote Link to comment Share on other sites More sharing options...
Bigred82576 Posted September 6, 2018 Author Share Posted September 6, 2018 (edited) They are CRD92/93 rears.Thanks for the info guys. Edited September 6, 2018 by Bigred82576 Quote Link to comment Share on other sites More sharing options...
Bigred82576 Posted September 18, 2018 Author Share Posted September 18, 2018 Hi there R/R didn’t work still leaks does anybody have a part # for a pinion yoke sleeve? It’s 2.75 O.D. Thank you. Quote Link to comment Share on other sites More sharing options...
Freightrain Posted September 18, 2018 Share Posted September 18, 2018 https://www.napaonline.com/en/p/NOS99269 "N" Nominal Dimension 2.750 in. / 70.00 mm Brand Name NAPA Oil Seals / SKF (CR) Fits Shaft Diameter 2.750 in. To 2.756 in. / 69.85 mm To 70.01 mm Flange Diameter 3.125 in. / 79.38 mm Installation Dimension 1.250 in. / 33.32 mm Seal Surface Width 1.125 in. / 28.58 mm Speedi-Sleeve I.D. 2.75 in. Speedi-Sleeve Width 1.25 in. UNSPSC 31171509 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment Share on other sites More sharing options...
Bigred82576 Posted September 19, 2018 Author Share Posted September 19, 2018 Awesome thanks for the info! Quote Link to comment Share on other sites More sharing options...
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