JPH04121225A - Differential gear - Google Patents

Differential gear

Info

Publication number
JPH04121225A
JPH04121225A JP24041690A JP24041690A JPH04121225A JP H04121225 A JPH04121225 A JP H04121225A JP 24041690 A JP24041690 A JP 24041690A JP 24041690 A JP24041690 A JP 24041690A JP H04121225 A JPH04121225 A JP H04121225A
Authority
JP
Japan
Prior art keywords
gear
differential
holes
gears
case
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP24041690A
Other languages
Japanese (ja)
Inventor
Fumiaki Nishikawa
文顕 西川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
Original Assignee
Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Iseki and Co Ltd, Iseki Agricultural Machinery Mfg Co Ltd filed Critical Iseki and Co Ltd
Priority to JP24041690A priority Critical patent/JPH04121225A/en
Publication of JPH04121225A publication Critical patent/JPH04121225A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/38—Constructional details
    • F16H2048/385—Constructional details of the ring or crown gear

Landscapes

  • Motor Power Transmission Devices (AREA)
  • Retarders (AREA)

Abstract

PURPOSE:To improve assembly performance by inserting two output bevel gears from assembly holes opened on a differential gear case into a gear chamber and then, by inserting two pinion gears from the above assembly holes. CONSTITUTION:Assembly holes 23 and 24 for gears are opened at the positions orthogonal to the axial direction of each of output takeoff holes 18 and 19 and inserting holes 21 and 22 of a gear chamber 17. Assembly procedure of a differential gear 5 is that output bevel gears 27 and 28 are first inserted into the holes 23 and 24 of a differential gear case 13, and their cylinder axis parts 31 and 32 are engaged with bearing parts 33 and 34 of the gear chamber 17, respectively. Differential pinion gears 25 and 26 are inserted into the holes 23 and 24 and engaged with the gears 27 and 28 and they are rotated with the cylinder axis parts 31 and 32 as the rotation center. When the gears 25 and 26 are rotated by about 90 degrees along the inner wall of the gear chamber 17, inserting holes 21 and 22 of the case 13 accord with center holes 35 and 36 of the gears 25 and 26. A pinion shaft 20 is inserted from one of the inserting holes 21 and 22 to make a lock hole 37 provided at its end accord with a pin hole 38 opened orthogonally to the inserting hole 21 of the case 13 and fixed by inserting a cotter pin 39.

Description

【発明の詳細な説明】 「産業上の利用分野」 この発明は差動装置に関するものであり、特に、一体成
形のデファレンシャルギヤケースを使用スる差動装置の
組立性の改善に関するものである。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a differential gear, and more particularly, to improving the assemblability of a differential gear using an integrally molded differential gear case.

［従来の技術］ 従来、走行車両に使用する差動装置のデファレンシャル
ギヤケースは、複数の部材を鋳造にて作成した後に、デ
ファレンシャルピニオンギヤ並びに出力ベベルギヤを収
容するギヤ室を切削加工して仕上げている。前記ギヤ室
は曲面と平面とが混在する複雑な形状であるため、切削
加工の工程数が多く、生産性及び加工コストに問題があ
る。[Prior Art] Conventionally, a differential gear case of a differential device used in a traveling vehicle is produced by casting a plurality of members, and then finishing the case by cutting a gear chamber that accommodates a differential pinion gear and an output bevel gear. Since the gear chamber has a complicated shape with a mixture of curved surfaces and flat surfaces, the number of cutting steps is large, which poses problems in productivity and processing cost.

そこで、前述した問題を解決するためにデファレンシャ
ルギヤケースを一体的に形成するもの（実公昭６３−１
０４１１４号公報参照）や、更にギヤ室の内面形状を球
面として切削加工を単純化したもの（特開昭６３−２３
５１２７号公報参照）が知られている。これは、デファ
レンシャルギヤケースの出力取出孔並びにデファレンシ
ャルピニオンギヤの枢支部に夫々直交する位置に組込み
孔を開穿するとともに、前記ピニオンキャ並びニ出カベ
ベルギヤの背面部をギヤ室の球面形状に合致させて形成
している。Therefore, in order to solve the above-mentioned problem, a differential gear case was formed integrally (Utility Model Publication Act 63-1).
04114 publication), and a gear chamber with a spherical inner surface to simplify the cutting process (Japanese Patent Application Laid-open No. 63-23).
5127) is known. This is done by drilling installation holes at positions perpendicular to the output extraction hole of the differential gear case and the pivot portion of the differential pinion gear, and by making the back surface of the pinion case and output bevel gear match the spherical shape of the gear chamber. are doing.

そして、二つの出力ベベルギヤを前記組込み孔からギヤ
室内へ挿入し、所定位置へ配置した後に二つのデファレ
ンシャルピニオンギヤを前記組込み孔から挿入して出力
ベベルギヤに歯合させる。Then, the two output bevel gears are inserted into the gear chamber through the assembling holes and arranged at predetermined positions, and then the two differential pinion gears are inserted through the assembling holes and meshed with the output bevel gears.

続いて歯合状態にある出力ベベルギヤ及びデファレンン
ヤルビニオンギャを前記ギヤ室内壁面に沿って回動し、
デファレンシャルピニオンギヤの中心孔とデファレンシ
ャルギヤケースのビニオンシャフト挿通孔とを合致させ
る。そして、前記ビニオンシャフト挿通孔からビニオン
シャフトを挿入し、デファレンシャルピニオンギヤを所
定位置で軸支して差動装置が組立てられる。Subsequently, the output bevel gear and the differential gear in mesh are rotated along the inner wall surface of the gear;
Align the center hole of the differential pinion gear with the pinion shaft insertion hole of the differential gear case. Then, the differential gear is assembled by inserting the binion shaft through the binion shaft insertion hole and pivotally supporting the differential pinion gear at a predetermined position.

［発明が解決しようとする課題］ 前述した従来の一体成形され、ギヤ室内を球面状に形成
したデファレンシャルギヤケースに於けるギヤの組込作
業は、組込み孔へ挿入してベベルギヤに歯合させたピニ
オンギヤを、前記ベベルギヤの回転方向へ移動してビニ
オンシャフトを嵌入するときに、前記ピニオンギヤの中
心孔とデファレンシャルギヤケースのビニオンシャフト
挿通孔とを一致させることは容易ではない。[Problems to be Solved by the Invention] In the conventional integrally molded differential gear case with a spherical gear chamber, the gear assembly work involves a pinion gear inserted into an assembly hole and meshed with a bevel gear. When the bevel gear is moved in the rotational direction of the bevel gear to fit the pinion shaft, it is not easy to align the center hole of the pinion gear with the pinion shaft insertion hole of the differential gear case.

これは、歯合状態にあるベベルギヤ並びにピニオンギヤ
が、球面状のギヤ室内を全方向へ回動自在であるためで
あり、組立性が悪く生産性に問題を生ずる。This is because the bevel gear and pinion gear in a meshed state are rotatable in all directions within the spherical gear chamber, which results in poor assembly efficiency and a problem in productivity.

そこで、ピニオンギヤと前記ピニオンシャフト挿通孔と
の位置合わせを容易とし、ビニオンシャフト挿入作業の
迅速化を図り、組立性を改善するために解決すべき技術
的課題が生じてくるのであり、本発明は該課題を解決す
ることを目的とする。Therefore, a technical problem arises that must be solved in order to facilitate the alignment between the pinion gear and the pinion shaft insertion hole, speed up the pinion shaft insertion work, and improve assembly efficiency. aims to solve this problem.

［課題を解決するための手段］ この発明は上記目的を達成するために提案するものであ
り、アクスルハウジング内に一体成形のデファレンシャ
ルギヤケースを軸支し、該デファレンシャルギヤケース
内のギヤ室を球面状に形成して、前記ギヤ室にデファレ
ンシャルピニオンギヤ並びに出力ベベルギヤを内装した
差動装置に於て、前記ギヤ室内の出力取出し孔の縁部を
大径に段設して出力ベベルギヤの軸受部を形成し、前記
出力ベベルギヤの背面中央部位に筒軸部を突設して、該
筒軸部を前記軸受部に遊嵌したことを特徴とする差動装
置を提供せんとするものである。[Means for Solving the Problems] The present invention is proposed to achieve the above object, and includes an integrally molded differential gear case that is pivotally supported within an axle housing, and a gear chamber within the differential gear case that has a spherical shape. In the differential device in which a differential pinion gear and an output bevel gear are installed in the gear chamber, the edge of the output take-out hole in the gear chamber is stepped to a large diameter to form a bearing portion of the output bevel gear; It is an object of the present invention to provide a differential device characterized in that a cylindrical shaft portion is provided protrudingly from the central portion of the back surface of the output bevel gear, and the cylindrical shaft portion is loosely fitted into the bearing portion.

［作用］ デファレンシャルギヤケースに開穿された組込み孔から
ギヤ室内へ二つの出力ベベルギヤを挿入し７、該出力ベ
ベルギヤの背面部位に突設した筒軸部を、前記ギヤ室内
の出力取出し孔の縁部に形成した軸受部に遊嵌して位置
決めする。続いて、二つのデファレンシャルピニオンギ
ヤを前記組込み孔から挿入し、出力ベベルギヤに歯合さ
せて歯合状態を維持しつつ、前記出力ベベルギヤの筒軸
部を回転中心として回動させると、前記デファレンシャ
ルピニオンギヤはギヤ室内壁に沿って移動する。そこで
、デファレンシャルピニオンギヤを略９０度移動させる
と、該ピニオンギヤの中心孔と、デファレンシャルギヤ
ケースに開穿したビニオンシャフト挿通孔とを一致させ
ることができ、ビニオンシャツトラ挿入してデファレン
シャルピニオンギヤを軸支し、差動装置の組立が完了す
る。[Function] Two output bevel gears are inserted into the gear chamber through the assembly hole drilled in the differential gear case 7, and the cylindrical shaft portion protruding from the back side of the output bevel gear is inserted into the edge of the output extraction hole in the gear chamber. It is positioned by loosely fitting it into the bearing part formed in the. Next, the two differential pinion gears are inserted through the assembly holes, and while maintaining the meshing state by meshing with the output bevel gear, are rotated about the cylindrical shaft portion of the output bevel gear, so that the differential pinion gear Move along the gear interior wall. Therefore, by moving the differential pinion gear approximately 90 degrees, the center hole of the pinion gear can be aligned with the pinion shaft insertion hole drilled in the differential gear case, and the pinion shaft insertion hole can be inserted to support the differential pinion gear. Then, assembly of the differential gear is completed.

［実施例］ 以下、この発明の一実施例を別紙添付図面に従って詳述
する。第１図はトラクタの前輪駆動機構（１）ＣＤ正面
図であり、（２）はフロントアクスルハウジング、（３
）（３）は前輪、（４）（４）は操舵用のドラッグアー
ムである。前記フロントアクスルハウジング（２）は筒
状の鋳物であり、底面（Ｂ）は直線状に形成して農作物
等への干渉を減少させている。そして、中央部位に差動
装置（５）をベアリング（６）（７）にて回転自在に軸
支し、該差動装置（５）の左右両側に挿着したアクスル
シャフト（８）（９）によって前輪（３）（３）へ駆動
力を伝達している。[Example] Hereinafter, an example of the present invention will be described in detail with reference to the accompanying drawings. Figure 1 is a CD front view of the front wheel drive mechanism (1) of the tractor, (2) is the front axle housing, (3)
) (3) is a front wheel, (4) (4) is a drag arm for steering. The front axle housing (2) is a cylindrical casting, and the bottom surface (B) is formed in a straight line to reduce interference with agricultural products and the like. A differential gear (5) is rotatably supported in the center by bearings (6) and (7), and axle shafts (8) and (9) are inserted on both left and right sides of the differential gear (5). The driving force is transmitted to the front wheels (3) (3).

第２図は要部の平面図であり、フロントアクスルハウジ
ング（２）の背面（図中上方）に開穿した人力孔（１０
）へ挿入した駆動軸（ｌｌ）の先端部に嵌着した駆動ギ
ヤ（Ｌ６は、デファレンシャルギヤケース（ｌ■の右側
端部に設けたスプライン（ゆ並びにソケット部（１つへ
嵌合した入力ギヤ（＋１１９へ歯合し、前記入力ギヤ（
ＩＥ）とデファレンシャルギヤケース（１等とを一体的
に回転させる。前記デファレンシャルギヤケース（四は
グイキャストにて一体成形し、ギヤ室（■の左右両側に
出力取出し孔（日（殉を開穿してアクスルシャフト（８
）（９）を遊挿するように形成しである。又、ギャ室（
ｒ７）の中心を通り前記出力取出し孔（１（＋９）の軸
方向と直交する位置にビニオンシャフト（イ）の挿通孔
０１）（ト）を開穿するとともに、前記出力取出し孔（
１（１’）と挿通孔０１）＠との夫々の軸方向と直交す
る位置に、後述するギヤ類の組込み孔（ハ）（９）が開
穿されている。Figure 2 is a plan view of the main part, and shows the manual hole (10
The drive gear (L6) fitted to the tip of the drive shaft (ll) inserted into the differential gear case (l +119, and the input gear (
IE) and differential gear case (No. 1) are rotated integrally. The differential gear case (No. 4 is integrally molded with Gui-casting, and output extraction holes (No. 1) are opened on both left and right sides of the gear chamber (■ Axle shaft (8
) (9) is formed so that it can be inserted loosely. Also, the gal room (
An insertion hole 01) (g) for the binion shaft (a) is bored through the center of the output extraction hole (r7) at a position perpendicular to the axial direction of the output extraction hole (1 (+9)), and
1 (1') and the insertion hole 01)@, holes (c) (9) for assembling gears, which will be described later, are drilled at positions perpendicular to the axial directions of each of the through holes 01)@.

前記ギヤ室（のは、組込み孔（ハ）勉）から、球面切削
工具（図示せず）を挿入して球面状に加工され、該ギヤ
室（ｒ７１に収容するデファレンシャルピニオンギヤ（
ハ）（１）並びに出力ベベルギヤ（２カ（イ）の背面部
を、ギヤ室（ｒ７）の内面形状に一致させて球面状に加
工しである。そして、前記出力ベベルギヤ（２カ（イ）
に開穿された中心孔（２１１（１）の背面開口部の縁部
を後方へ突設して筒軸部０１）＠を形成し、ギヤ室（の
の出力取出し孔（日（鴎の縁部を前記筒軸部０１）（至
）と略同径に段設してカラースラストベアリング状の軸
受部＠（ロ）を設けている。A spherical cutting tool (not shown) is inserted into the gear chamber (the installation hole (c)) to machine the differential pinion gear (r71) into a spherical shape.
c) The back surface of (1) and the output bevel gear (2 parts (A)) are machined into a spherical shape to match the inner surface shape of the gear chamber (r7).
The edge of the rear opening of the center hole (211(1)) is made to protrude rearward to form the cylindrical shaft part 01). A collar thrust bearing-shaped bearing part @(b) is provided in a stepped manner having approximately the same diameter as the cylindrical shaft part 01) (to).

次に、前記差動装置（５）の組立手順を説明する。Next, the assembly procedure of the differential gear (5) will be explained.

先ず、デファレンシャルギヤケース（Ｉ■のＩｆｉ込み
孔（ハ）に）へ出力ベベルギヤ（２７）（２１を挿入し
、該出力ベベルギヤ０７１（イ）の筒軸部（３１）（至
）を夫々ギヤ室（のの軸受部＠ｅ（４）へ嵌合させる。First, insert the output bevel gears (27) (21) into the differential gear case (Ifi insertion hole (c) of I Fit it into the bearing part @e (4).

続いて、前記組込み孔（至）（２４）へデファレンシャ
ルピニオンギヤ（ハ）（イ）を挿入し、出力ベルギヤＱ
カ（イ）に歯合させ、該歯合状態のまま出力ベベルギヤ
Ｑ′Ｉ）Ｃ＠の筒軸部＜３１）（３２）を回動中心とし
て回転させる。Next, insert the differential pinion gears (C) and (A) into the installation holes (to) (24), and connect the output bell gear Q.
(A), and in this meshed state, rotate the cylindrical shaft portion <31) (32) of the output bevel gear Q'I)C@ as the rotation center.

゛そして、デファレンシャルピニオンギヤ（イ）（イ）
がギヤ室（ｒ７）内壁に沿って略９０度回動したときに
、デファレンシャルギヤケース（１等の挿通孔（２＋）
（イ）と、デファレンシャルピニオンギヤ（ト）（イ）
の中心孔（ト）（イ）とが一致する。次に、前記挿通孔
（２１）（２）の一方からビニオンシャフト（イ）を挿
入し、該ビニオンシャフト（イ）の一端部に設けた止め
孔（ロ）と、デファレンシャルギヤケース（１■の前記
挿通孔（２＋）に直交して開穿したビン孔（ト）を一致
させ、コツタービン（ロ）を挿通して前記ビニオンシャ
フト（イ）は固定される。゛And the differential pinion gear (A) (A)
When the differential gear case (1st class insertion hole (2+)
(A) and differential pinion gear (G) (A)
The center holes (G) and (B) of Next, insert the binion shaft (a) through one of the insertion holes (21) and (2), and insert the stop hole (b) provided at one end of the binion shaft (a) into the differential gear case (1). The pinion shaft (A) is fixed by aligning the pin hole (G) which is perpendicularly drilled with the insertion hole (2+) and inserting the knot turbine (B).

この差動装置（５）に入力ギヤ（ｌのを嵌着してフロン
トアクスルハウジング（２）にベアリング（６）（７）
を介装して組付け、前記入力ギヤ（１０を駆動ギヤ（鴎
に歯合させるとともに、出力ベベルギヤ１２カ（イ）の
中心孔（ト）（イ）にアクスルシャフト（８）（９）を
夫々嵌着してトラクタのシャーシに組込み、第１図に示
す前輪駆動機構（１）か形成される。Fit the input gear (l) into this differential device (5) and attach the bearings (6) (7) to the front axle housing (2).
The input gear (10) is meshed with the drive gear (A), and the axle shafts (8) and (9) are inserted into the center holes (G) and (A) of the output bevel gear 12 (A). The front wheel drive mechanism (1) shown in FIG. 1 is formed by fitting and assembling them into the chassis of a tractor.

尚、デファレンシャルギヤケース（１■の一側部に入力
ギヤ（ｆｉｌｌ）を嵌着し、該入力ギヤ（ＩＥＤの噛合
い面をデファレンシャルピニオンギヤ（ハ）（４）の方
向へ向けているので、第２図に示した駆動軸（１１）と
差動装置（５）との変位が可及的に小となり、左右のア
クスルシャツ！−（８）（９）の長さが等長に近く、急
激に駆動力を付加した場合に一方向へステアリングをと
られる所謂トルクステアの発生はない。又、トラクタ等
の作業車両でトレッド可変構造としたものに於てはトレ
ッド可変スライド量の制限が減少する。Note that the input gear (fill) is fitted to one side of the differential gear case (1), and the meshing surface of the input gear (IED) is directed toward the differential pinion gear (c) (4). The displacement between the drive shaft (11) and the differential gear (5) shown in the figure becomes as small as possible, and the lengths of the left and right axle shirts!-(8) and (9) are nearly equal, and suddenly There is no occurrence of so-called torque steer, where the vehicle is steered in one direction when driving force is applied.Furthermore, in work vehicles such as tractors with a variable tread structure, the limit on the variable tread sliding amount is reduced.

そして、この発明は、この発明の精神を逸脱しない限り
種々の改変を為す事ができ、そして、この発明が該改変
せられたものに及ぶことは当然である。This invention can be modified in various ways without departing from the spirit of the invention, and it goes without saying that this invention extends to such modifications.

［発明の効果］ この発明は、上記一実施例に詳述したように、デファレ
ンシャルギヤケースのギヤ室の出力取出し孔に出力ベベ
ルギヤを遊嵌して位置決めできる。[Effects of the Invention] As described in detail in the above embodiment, the present invention allows the output bevel gear to be positioned by loosely fitting it into the output take-out hole of the gear chamber of the differential gear case.

従って、デファレンンヤルビニオンギャを絹込む際に、
前記デファレンンヤルビニオンキャの中心孔と、デファ
レンシャルギヤケースのビニオンシャフト挿通孔との位
置合わせが著しく容易になり、組立性が改善されて生産
性の向上に寄与できる。Therefore, when inserting defarenjarbinyongya,
The alignment between the center hole of the differential gear case and the differential shaft insertion hole of the differential gear case is significantly facilitated, and assembly efficiency is improved, contributing to increased productivity.

【図面の簡単な説明】[Brief explanation of the drawing]

図は本発明の一実施例を示し、第１図はトラクタの前輪
駆動機構の一部切欠正面図、第２図は差動装置及びフロ
ントアクスルハウジングの平面部分断面図である。 （２）・・−・・・フロントアクスルハウジング（５）
・・・・・・差動装置The drawings show an embodiment of the present invention, in which FIG. 1 is a partially cutaway front view of a front wheel drive mechanism of a tractor, and FIG. 2 is a partial cross-sectional plan view of a differential gear and a front axle housing. (2)...Front axle housing (5)
・・・・・・Differential device

Claims (1)

【特許請求の範囲】[Claims] 　アクスルハウジング内に一体成形のデファレンシャル
ギヤケースを軸支し、該デファレンシャルギヤケース内
のギヤ室を球面状に形成して、前記ギヤ室にデファレン
シャルピニオンギヤ並びに出力ベベルギヤを内装した差
動装置に於て、前記ギヤ室内の出力取出し孔の縁部を大
径に段設して出力ベベルギヤの軸受部を形成し、前記出
力ベベルギヤの背面中央部位に筒軸部を突設して、該筒
軸部を前記軸受部に遊嵌したことを特徴とする差動装置
。In the differential device, an integrally molded differential gear case is pivotally supported in an axle housing, a gear chamber in the differential gear case is formed in a spherical shape, and a differential pinion gear and an output bevel gear are installed in the gear chamber. The edge of the output take-out hole in the chamber is stepped to have a large diameter to form a bearing part of the output bevel gear, and a cylindrical shaft part is provided protruding from the central part of the back surface of the output bevel gear, and the cylindrical shaft part is connected to the bearing part. A differential device characterized by being loosely fitted into the.
JP24041690A 1990-09-11 1990-09-11 Differential gear Pending JPH04121225A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24041690A JPH04121225A (en) 1990-09-11 1990-09-11 Differential gear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24041690A JPH04121225A (en) 1990-09-11 1990-09-11 Differential gear

Publications (1)

Publication Number Publication Date
JPH04121225A true JPH04121225A (en) 1992-04-22

Family

ID=17059152

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24041690A Pending JPH04121225A (en) 1990-09-11 1990-09-11 Differential gear

Country Status (1)

Country Link
JP (1) JPH04121225A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009026062A3 (en) * 2007-08-17 2009-04-16 American Axle & Mfg Inc Differential with cross pin retention system and method for assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009026062A3 (en) * 2007-08-17 2009-04-16 American Axle & Mfg Inc Differential with cross pin retention system and method for assembly
US7648438B2 (en) 2007-08-17 2010-01-19 American Axle & Manufacturing, Inc. Differential with cross pin retention system and method for assembly
US7976422B2 (en) 2007-08-17 2011-07-12 American Axle & Manufacturing, Inc. Differential with cross pin retention system and method for assembly

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