The 3-4 accumulator he put the spring down into the case and the piston to the separator plate like it shows to do in the TransGo shift kit. I purchased a TransGo SK4L60E with the 45-PLT-96 separator plate most of the check ball holes have pretty good wear into the plate so since I'm in this far in to it might as well replace it Free Shipping on All Transmission Parts & Rebuild Kits Orders Over $35. Multiple warehouse locations in Las Vegas and the East Coast gets you transmission parts fast The 3-4 hydraulic circuit is quite long; it is interconnected to D4, Forward clutch, 2 nd, 2 nd clutch and 3 rd accumulator circuits. Since any pressure change in one part of the circuit affects the rest of the circuit, even small leaks at a few junctions along the way can add up to a big enough pressure loss to allow slipping
If your accumulator spring is being compressed during a shift then a heavier spring will create a firmer shift. And lighter spring will create a softer shift. (Try this on 700R4/4L60E 3-4 accumulator, makes no significant difference and you'll wonder why it has an accumulator) Sample of GM 700R4 1-2 accumulator 35371A 4L60E 4L65E Transmission 1-2 Accumulator spring, orange tapered (Conicol Shaped) 1.485 outside diameter X 1.288 tall X .160 coil thickness. Competitors Price $2.19. Your Cost $1.95. You save $0.24! (Out of Stock) 35371B 700R4 4L60E Transmission Forward & 1-2 Accumulator Spring, red color For what it is worth, I helped a friend out with his 4l60E, he accidentally mixed up the position of the 1-2 and 3-4 springs one is thicker and heaver the other is always (almost always, a particular color) after the transmission was installed, it would not engage the input drum 3-4 clutch pack, because the incorrect spring had been installed.
I have a 2001 s10 blazer 2wd 4.3l with 4l60e I've ordered a sonnax pinless 1-2 accumulator piston and a firmer 1-2 spring (77704s I think) Is the proper setup single spring towards separator plate, piston (cup facing spring) then accumulator housing? This should be setup for a firm shift.. . The Sonnax spring has identical performance specifications to the purple OE accumulator spring, but is made of high strength material to ensure lasting spring life and reduce spring relaxation
A cracked 1-2 accumulator piston - allowing fluid to leak by Porosity in 1-2 accumulator cover or piston Piston seal or groove damaged Nicks or burrs in 1-2 accumulator housing Missing or restricted oil passage 1-2 accumulator piston spring not seated Rough finish in 1-2 accumulator bore in case Worn or mispositioned Faces not fla The Sonnax 77704S spring has a similar spring rate (200 lbs/in) but is longer so it'll cause a slightly firmer part throttle shift. NOTE: Pay attention to which side of the piston these springs came out of. Factory 94-up 4L60E configuration is the spring inside the accumulator housing 2nd servo apply piston seal missing, cut or damaged 1-2 accumulator piston spring not seated I have a 1993 gmc 3/4 ton van.I replaced the 4l60e transmission. when I went to test drive,it would not start out in 1st,2nd only. I had a warranty so the shop gave another.I installed the second and.
. here we will give you some simple and inexpensive or just free upgrades you can do to improve the shift characteristics of your 4L60E transmission. these are not race car upgrades but ones that will work for your truck or street hot. 06 sierra with a 4L60E transmission with hard shift from 1st to 2nd. Diagnosed as bad 1-2 shift accumulator. Then remove the 3 10mm headed bolts from 1-2 accumulator. There is just a spring and a piston with an outer seal on it. These springs are known for breaking. I found this video of a valve body disassembly and the 3-4 accumulator.
On the 3-4 clutches, clutch clearance should be kept to a minimum, aim for 0.010 (0.25mm). This allows for faster 2-3 shifts and no burnt clutches. You can get a hardened input shaft, but it is rarely necessary. Broken input shafts are very unusual in the 4L60E, but the input shaft can strip out the aluminum shell The forward accumulator spring (356) The forward accumulator cover (363) The forward accumulator cover bolts (364) Install the manual valve (340). Top of Form. Bottom of Form. Bottom of Form. 3-4 Accumulator Installation Inspect the 3-4 accumulator piston (44) for the following conditions: Porosity . Cracks . Scoring . Nicks and scratche ACCUMULATOR PISTONS. With any 4L60E rebuild we always recommend replacing the stock accumulator pistons as they tend to break often and can ruin your transmission. We suggest replacing the forward accumulator piston (part number SNX-77987-01K) and the 1-2 accumulator piston (part number SNX-77998-03K). SNX-77987-01K 4T65E accumulator removed and disassembled showing 1-2, 2-3 pistons/springs. Now 1. Open up accumulator housing and you will see a gasket, which can be reused, and 2 pistons 2. Pull those out along with the springs, you will reuse the springs on top of the piston, but not below the piston 3. The transgo kit uses 3 springs in the 3rd position along with a shim above and below the piston (It. There are several other items that affect the 3-4 clutch as well. The 3rd gear accumulator, which is part of the 2nd gear servo assembly, absorbs the shock of the 3-4 clutch apply. The accumulator is a piston with a sealing ring around it. If the sealing ring fails, apply pressure to the clutch will bleed off and the clutch will slip and burn
Top right (afl valve) an inner white spring is added, my kit was also missing this Two down (under the accumulator assembly) the outer valve is replaced with a new on The (IIRC) first accumulator valve is replaced with the transgo one. The kit also comes with stronger 3-4 piston release springs and stronger forward piston release springs which. The 3-4 pack I had some issues with because they sent me the wrong steels for it. (upgrade to the 8 friction clutch pack) So they sent me out thinner plates and I mixed and match with the thicker to ensure the pack set at snap ring height before the 5 outer dual spring plates went in. that assembly spun free after snapring install I have no first gear after rebuild on 4l60e transmission, I checked 1-2 accumulator that is fine, checked servo, that is fine, checked to make sure valve 1-2 is moving freely and that does, I am not sure what else to try, I also checked to make sure sprag was working ok, turned to left it locks, to right is moves, which is the right way I am assuming Got it home and pulled it apart to find the 3/4 clutchpack fried and the band was a little worse for wear too. Replaced with a Red Eagle extra wide band and replaced the 3/4 pistons and clutchpack. Upgraded the clutchpack from the standard 4L60e 6 plate to 7 plate with high energy frictions
CAUSE: Excessive accumulator pressure at light throttle. SOLUTION: SK® kit has accumulator valve spring selection. COMPLAINT: Soft 2-3 apply, slips with more throttle. CAUSE #3: Worn or undersize solid rings on center support. SOLUTION: Install metal rings or scarf cut rings GM 8626356. COMMENT: Don't use the solid type ring 2006 GMC Sierra 1500 4X4 was shifting hard into 2nd gear. After doing a lot of research I decide the accumulator in these 4L60e are problematic (they are made of some cheap plastic) . So I ordered the Sonnax accumulator with a new tanny filter and gasket. This totally resolved the harsh shift into 2nd gear Various shift- and engagement-feel concerns can result from accumulator-spring mix-up. The chart and photo above show the location, color and dimensions of each accumulator spring and the location of each accumulator in the case. The C1 accumulator is for neutral to drive engagement feel. The C3 accumulator is for the 3-4 shift feel 4L60 4L60E Ball and Capsule for 3-4 Accumulator For 2-4 Servo ACDELCO OEM 87-up. $15.90. shipping: + $7.95 shipping. Almost gone. 3-4 Clutch 2-4 Band Accumulator Check Ball Capsule 4L60E 4L60 700R4 Transmission. $18.07. Free shipping. 3-4 Clutch 2-4 Band Accumulator Check Ball Capsule 4L60E 4L60 700R4 Transmission
dtrannyman. 158 Answers. SOURCE: no reverse after rebuild on 4L60E Transmission from 1995 GMC Sono. There isn't a modulator on this trans as it is electronic. You can have first gear going forwrd but no reverse. It is possible. The low/ reverse clutch isn't needed to go forward. Posted on Apr 02, 2009. Helpful 0 Increased durability for 3-4 clutches. INPUT HOUSING ASSEMBLY - The previous design input housing had a check ball seat drilled into the housing. A check ball was installed into this hole and the opening was then staked to retain the ball, as shown in Figure 6 1 Purple Pressure Regulator Spring 1 Orange Pressure Regulator Spring 1 .375 Cup Plug 1 Separator Plate 1 Upper Valve Body Gasket 1 Lower valve Body Gasket 1 Accumulator Delete Plate 6 Accumulator Delete Plate Mounting Bolts NOTE: THIS KIT MAY BE INSTALLED WITHOUT PERFORMING THE INTERNAL MODIFICATIONS HOWEVER IT IS RECOMMENDED THAT AL
Burnt 3-4 clutch packs are notoriously common in the GM 4L60/E family of transmissions. Tech hotlines and internet bulletin boards are often jammed-up with people pleading for help with this 3-4 roasting. Some technicians get frustrated and throw multiple Hail Mary replacement parts at the transmission when facing this issue. But it doesn't have to be an exercise in frustration; burnt 3-4. disappears. EGR valve spring weak causing lean burn miss in engine, feels like a miss but runs great otherwise even at stall. No pressure rise forward, limited to 130 in reverse. Missing cup plug in the accumulator housing Low or erratic line rise - VCM Equipped vehicles ONLY Bad VCM ground See TransGo Bulletin# 06-04 No Speed
4L60E 4L65E 4L70E Transmission Pinless 1-2 3-4 Accumulator Piston Kit Sonnax in Vehicle Parts & Accessories, Car & Truck Parts, Transmission, Automatic Transmission | eBa 700R4 4L60E 4L65E 4L70E 2004R Sonnax Pinless Accumulator Piston Kit Fits All Years. Sonnax Updated Pinless Accumulator Piston Kit. In 4L60 & 4L60-E units it is common to have poor shift quality, burned bands or clutches due to accumulator piston wear I got curious and took my pile of accumulator springs to an engine shop and for a box of protein bars he measured all the spring rates for me on his valvespring checker. The purple spring Sonnax provides in their 4L60E-HP-01 kit for this position has an identical spring rate to the factory GM spring that came in these cars in this position A74927 GM 700-R4/4L60E Piston, 700-R4 1-2 & 3-4 Accumulator (.310Pin Dia) 8633567/8648998 82-91 A74927B GM 700-R4/4L60E Piston, 4L60E 1-2 Accumulator (.230 Pin Dia.) 8684429 92-UP 61985X GM 700-R4/4L60E Auxiliary Value Body Piston & Seal Kit 8635909 87-UP KG970 GM 700-R4/4L60E
Find many great new & used options and get the best deals for 700R4, 4L60E Superior servo apply spring kit with 3 springs at the best online prices at eBay! Free shipping for many products This kit includes everything pictured and below: 1-GOVENOR PRESSURE SOLENOID (BORG WARNER) 1-GOVENOR PRESSURE SENSOR (TRANDUCER) 1-LOCKUP AND OVERDRIVE SOLENOID AND THE HARNESS. 1-OUT PUT SPEED SENSOR WITH THE O RING. 1-HEAVY DUTY 3-4 ACCUMULATOR SPRING .126 HD. 1-FILTER FOR TRANSMISSION. 1-GOVENOR SOLENOID GASKET (DOUBLE LOCKUP
plate and gaskets. Remove the 3-4 accumulator spring, 3-4 accumulator piston and 3-4 accumulator piston pin. (See Photo 6.) Some of the accumulator assembly parts will drop out of the valve body as it is lowered. There are several check balls above the separator plate and in the valve body Find helpful customer reviews and review ratings for Sonnax 4L60 4L60E 4L65-E & 4L70-E Pinless Accumulator Piston Kit at Amazon.com. Read honest and unbiased product reviews from our users Retain the cushion spring and do not block the circuit. The 2-3 accumulator can be blocked by several methods. Removing the 2-3 accumulator spring and using a spacer (nut, washers, cut down section of tubing) between the piston and the e-clip is the shadetree' method. You can also block the feed in the valve body to the 2-3 accumulator You can insert the new separator plate and gasket into the transmission, but it might be needful to modify the 3-4 accumulator using a self-tapping 1/4-inch x 20 Allen head plug. The accumulator piston and spring can also be replaced without using the black spacer
Find many great new & used options and get the best deals for 4L60 4L60E 4L65E Sonnax Accumulator Pistions 1-2 / 3-4 Chevy GM pinles 77998-03K at the best online prices at eBay! Free shipping for many products 4L60E, VALVE TCC TO NON LOCKUP CONVERT 4L60E 93-UP (Transgo ) GM Chevrolet Chevy 4L60E 4L65E Transmission Parts: 700, JUNIOR SHIFT KIT 700-R4 81-92 -T.V. VALVE UPGRADE Corrects/Prevents/Reduces: FIXES late shifts - Sticking TV Valve. 3-4 clutch failure; soft or slide-bump 1-2; 2-3 cut loose; shuttle 4-3-4-3; soft or late 4th
4l60e 1 2 accumulator symptoms What is bedwetting and why kids wet the bed; How to use bedwetting alarms; Bedwetting Alarm Reviews; The Bedwetting Blog; Alternative Bedwetting Solutions; Age 4 and younger; Age 5 to 8 years old; Age 9 to 12 years old; Teenagers and young adults. Remove the plate that holds the. Step 1: Remove all of the valve body bolts except for one bolt near the center. The valve body usually comes off without much effort; it is often pushed off the separator plate because the direct accumulator and spring are compressed against the intermediate band servo piston 700R4 or 4L60E 1-2 or 3-4 ACCUMULATOR SPRING (VIOLET . Transmissioncenter.net DA: 22 PA: 38 MOZ Rank: 64. spring, 700r4 / 4l60e 1-2 or 3-4 accumulator (violet) This is the firmest OEM type replacement spring for use in the 1-2 or 3-4 accumulator of the 4L60 and 4L60-E transmission
3. 1-2 Shift shudder at WOT; delayed or abnormal 1-2 shift; There's a problem ONLY on the 1-2 shift: 1-2 accumulator piston cracked or stuck cocked in the bore. Check the yellow spring inside the vacuum housing for breakage. Also, if the accumulator housing walls are scored, the housing must be replaced. Easy fix in the pan 4l60e Transmision With No Reverse. Sign up for FREE! Become a GM-Trucks.com Member Today! In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs. From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who.
The valve body has to come down to get to the 3-4 accumulator, but wait until you do one of the things below before messing with the 4th accumulator (as a side note you can disable this accumulator without issue, it's rather ineffective anyway. either reverse the order of the piston and spring in the case, or take them out and hammer in an old. 3-4 clutches are worn out. Transmission must be removed and rebuilt. No 2nd or 4th gear (can be driven in 3rd gear): Servo seals are damaged or 2-4 band is worn out. Transmission must be removed and rebuilt. No 1st or 4th gear (in Drive it shifts from 2nd to 3rd and locks the torque converter): Shift A solenoid has failed
3. 1-2 Shift shudder at WOT; delayed or abnormal 1-2 shift; There's a problem ONLY on the 1-2 shift: 1-2 accumulator piston cracked or stuck cocked in the bore. Check the yellow spring inside the accum housing for breakage. Also, if the accumulator housing walls are scored, the housing must be replaced. Easy fix in the pan The billet accumulator pistons are pinless in the Sonnax kit. The servos will always have a pin with them. The 2nd and 4th gear billet superhold servos will require the pin to be checked with a dial indicator. Whatever you do, DO NOT GRIND THE END OF THE PIN DOWN Replace accumulator valve assembly for heavy vehicles. Replace 1-2 and 3-4 accumulator pistons Install forward abuse bore plug Replace separator plate and gaskets. Drill for stock clutch life: 1-2 = No drill 2-3 = 0.110 3-4 = 0.12