乐动nba ldsports乐动体育 Article 克M D级iagnostics And TheoryRebuilding Tips

March 02, 2016

B类uilding the Killer 4L60E - Top Tips for Optimizing Your Transmission Upgrades

The 700-R4/4L60-E family of transmissions is the most popular performance platform in the world, thanks in large part to Sonnax components that allow them to run reliably at extreme power levels. Whether you’re starting from scratch with a重型/性能构建or optimizing a seasoned racing vehicle, the following key areas MUST be addressed to realize the full potential of these units:

4L60变速箱改造

小时unt Down Unstable Pressure, the Real Pump Killer

当在较高的平均压力下运行时，整个液压系统必须处于最佳状态，以将泵叶片环的风险降至最低。压力脉动是由于压力调节阀控制不当造成的，这是真正的危险，测试管路压力时，压力表指针跳动是这个问题的一个明显迹象。

Stabilizing pressure starts with precise valve-to-bore clearances (PR valve bore wear is common in 4L60/E units) and a quality, leak-free boost valve. It’s also essential to feed the boost valve with a properly working (clean) EPC solenoid and steady AFL pressure to the EPC solenoid.

安装Sonnax超大PR阀(77917-06or77917-07), boost valve with O-rings (4L60E型-LB1,4L60E型-LB2or77898E-K) and AFL valve kit (77754-09K) is highly recommended for resolving pump pressure problems. The Sonnax [Performance PackHP-4L60E-01型for ’94-later units includes an O-ringed boost valve.

D级on’t Get Burned When Expanding 3-4 Clutch Capacity

电子xpand Clutch Capacity the Smart Way

克uarding against 3-4 clutch failure has traditionally meant working within the limited space of the OE input housing. Squeezing in more frictions requires installing a thinner backing plate with thinner clutches and steels, BUT:

Adding friction surfaces reduces the amount of steel
Steel in the clutch pack helps dissipate heat
如果没有足够的钢，热量就会积聚起来，离合器就会燃烧

Adding more, thinner plates increases static holding capacity by sacrificing engaging capacity. Durability suffers in higher-load applications where more energy goes into the clutch during the shift. The ONLY way to expand clutch capacity without sacrificing steel mass is by replacing the OE input housing with the patentedSonnax Smart Tech®外壳。定制的设计拥有身体clut大ch pack to eliminate 3-4 clutch burnup while also guarding against other common problems.

F级ix the Flex

The weak OE backing plate flexes during clutch apply, allowing heat to build up unevenly within the clutch pack’s limited space. Burnup is the common result. Stop the flex and you stop 3-4 clutch failure. The Sonnax Smart-Tech housing’s apply and backing plates surround a larger clutch pack area to keep the clutches parallel and maximize protection against overheating.

Watch this videoto see the OE flex in action and learn how the Smart-Tech housing will help you get the most out of your favorite clutches.

照顾好伺服带

切换到更宽的波段（Sonnax[red band 77700-01]或[Kevlar^®band 777000-01K]) is an ideal capacity/durability upgrade, but NEVER install a wider band on a used drum. The old band will have compressed the drum and created a subtle dish on its surface. When used with a wider band, this dish leads to slipping in 2nd gear, glazing and burning, and will eventually throw off the band adjustment.

Always check band/pin adjustment to prevent band release problems. Sonnax servo kits include instructions for setting servo travel between .075" and .125" using a dial indicator. Never shim the servo, as this moves the piston deeper into the bore where it’s more prone to bottoming out and causing band failure.

ThisSonnax tech article关于调整换档感觉在性能建设分解OE和售后服务选项二档伺服。

停止第三蓄能器单向球泄漏

防止第三蓄能器止回球总成发生轻微泄漏是至关重要的，因为这些泄漏与带和3-4离合器故障直接相关。Vacuum testing#7止回球（位于壳体的伺服区域，如所示图1) with Sonnax [vacuum test stand kit [VACTEST-01K is one quick and reliable way to check for leaks. Read more about recommended testing options inthis Sonnax tech article。

图1： 4L60-E箱伺服区	图2： 2-4伺服组件横截面

注：D级on’t confuse the OE checkball with the one found in Sonnax [servo release check valve kit 77701-076]. Although they look similar, they have completely different functions. The Sonnax kit is a unique solution that combines an orifice with a ball check valve to tune 2-3 shifts, but it MUST be used with a properly functioning OE 3rd accumulator checkball assembly.

减少1-2档伤害

D级amage to the band, input/output shafts, sprag, etc. can be reduced by properly cushioning the large ratio change on the 1-2 shift:

Never use a 1-2 servo that eliminates the cushion spring
Never reduce the 1-2 accumulator piston stroke
Never leave out the 1-2 checkball
Never over-drill the 1-2 feed hole

红色uce ratio change by converting 1st Gear from 3.06 to 2.84 with Sonnax input carrier kit77284-K型，这是获得性能更好、更耐用变速器的好方法。独一无二的Sonnax齿轮组提高了在强大应用中的整体启动能力，并减少了换档时带和离合器的压力。下表显示了更换2.84齿轮组的好处远远超过了1档传动比的改变。

Sonnax 2.84 Gear Set Ratio Changes vs. OE Ratio Changes

1. There is an obvious change to the 1st Gear ratio: 3.06 to 2.84.This reduces the overall ratio ‘spread’ from 1st Gear to 4th Gear, making a close-ratiotransmissioncompared to the OE ratios being a wide-ratio spread. This change mostly affects the Starting Line Ratio (SLR) which is calculated by combining the transmission ratio with rear axle final drive ratio and then tire radius. The reduced torque multiplication (from 3.06 to 2.84) also reduces the torque loads on some transmission components.

2. There is a less-obvious, but still important, change in the ratio drop BETWEEN gears.齿轮之间的速比降越小，使速比变化所需的离合器和传动带的工作就越少。较小的比降也会降低相关硬零件上的冲击载荷。在1-2移位和2-3移位时，Sonnax输入载波提供了一个降低的比率降。从3档开始，OE和Sonnax的传动比相同。

追求完美的投入

You don’t move when the input sprag fails, a critical link often overlooked during transmission upgrades.

Install a new sprag assembly that includes new inner/outer races. Used races may be worn or manufactured out of spec.
通过安装Sonnax重型2-3换档阀，可轻松加强和加固楔块77754-41。
C级lean fluid is essential for maximum sprag durability. Make sure the transmission pan has a drain plug, and change the fluid often to prevent micron-sized debris from undermining sprag engagement. Never leave magnets out of the pan. In fact, adding EXTRA magnets is a good idea, as they collect the hardest of contaminates most likely to effect the critical EPC solenoid.

通过最多移动五个小齿轮帮助后环存活

Increasing the number of planet pinions from four to five distributes load more evenly on the sun gear and around the ring gear. At high torque, this reduces stress/flexing of the ring gear and improves durability.

C级ontrol Valve Body Bleeding

The foundation of a good unit is a tight, leak-free valve body that prevents pressure loss, conserves pump volume, keeps pressure stable and reduces fluid foaming in the pan area. Since bore wear is common in the 4L60/E, ALL circuits should be vacuum tested to identify leaks and some repairs may require reaming.免费Sonnax真空测试指南显示您的位置来测试,识别常见的公关oblems and recommend the right Sonnax parts for repairs.

The valve body shown below includes repairs and improvements that typical of a 4L60/E performance build with some mileage and wear. Or, save time and money with a阀体质量from Sonnax. Each unit is completely refurbished with Sonnax parts, electronically and hydraulically tested, ready to bolt-up as-is or upgrade with your favorite performance mods.

**建议的阀体维修/升级**
ID	Sonnax Component
C级	小时eavy Duty 2-3 Shift Valve	77754-41
小时	Actuator Feed Limit Valve KitReaming Required	77754-09K
电子	3-4 Relay O-Ringed End Plug Kit	77964-08K型
B类	F级orward & Reverse Abuse Bore Plug	77754-21
A	Pinless Forward Accumulator Piston Kit*	In Performance PackHP-4L60E-01型
F级	变矩器离合器调节器和隔离阀套件Reaming Required	77754-04K型
克	变矩器离合器压力限制器弹簧**	In Performance PackHP-4L60E-01型
D级	1-2 Accumulator Valve Shim	In Performance PackHP-4L60E-01型

*Also available separately under Part No.77987-01K。 **Valve also included in性能包HP-4L60E-01。

使用更好的油底壳稳定变速器压力

The best deep pan to use is an aftermarket model with a filter extension to place the filter lower into the oil sump. It helps prevent air ingestion during hard acceleration, which can destabilize transmission pressure and lead to slipping.

精心优化计算机编程和调整

No matter how well-built the unit, poor computer programming will quickly kill the transmission. It’s vital to be informed about the many modification options available and how they affect performance and durability. Here are a few examples of classic programming pitfalls:

Pressure Control Optimization

当需要最大压力时，设置不正确的参数会使管路压力“从映射表”降至最小范围。这是一个很好的调整错误，可能导致离合器烘烤压力下降。最好的做法是，在安装了压力表的情况下，始终对新安装的装置进行试驾，以验证：

B类ase pressure
负载下压力快速上升
Stable max pressures

“Torque Management” Mods

此功能通常被完全禁用，即使保持一点“开”将有助于最大限度地提高传动系统的耐用性，而不会使车辆减速。找出最佳平衡需要调整经验和对特定车辆设置的扎实理解。体育投注在线

C级ontinuous Slip (EC3) TCC Control

自从higher-stall售后转换器不designed for continuous slip, it might seem reasonable to eliminate this function. Simple on-off operation can be excessively harsh, though, especially when the converter is damperless. A better programming option is disabling the EC3 continuous slip, while keeping the pulse-width modulated (PWM) TCC apply so that the converter clutch comes on in a ramped, controlled manner. Learn more about ways to modify TCC apply in the valve body in Sonnax tech article “20 Years Later: What’s New with 4L60-E PWM Modifications。”

F级inally…Play it Safe!

D级on’t risk throwing products from different manufacturers into the same tranny when there’s no guarantee they’re all going to play nice. Installing Sonnax parts designed to work together is the best and safest way to upgrade any transmission. TheseSonnax构建图表are a great place to start when upgrading heavy-duty pickups or performance vehicles. For assistance with product selection or part installation, contact the乐动体育app 。