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 https://www.bigmacktrucks.com/topic/54207-axle-break-down/ 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 https://www.bigmacktrucks.com/topic/54207-axle-break-down/#findComment-405543 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 https://www.bigmacktrucks.com/topic/54207-axle-break-down/#findComment-405549 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 https://www.bigmacktrucks.com/topic/54207-axle-break-down/#findComment-405579 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 https://www.bigmacktrucks.com/topic/54207-axle-break-down/#findComment-406211 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 https://www.bigmacktrucks.com/topic/54207-axle-break-down/#findComment-406213 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 https://www.bigmacktrucks.com/topic/54207-axle-break-down/#findComment-406257 Share on other sites More sharing options...
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