Modification of pump cover beginning on june 28, julian date 180 1984, all thm 700r4 transmissions were built with a new pump body and pump cover assembly with an added oil dam in both components, as shown in figure 10. The solenoid in the trans often fails, but i would check all fuses, then the brake switch which you should adjust so that it is depressed until the brake pedal is pushed down. I need a valve body diagram 700r4 transmission fixya. The torque converter consists of a converter clutch, a driving member.
When the transmission was renamed to 4l60 in 1990, this naming convention provided a number of key characteristics about this transmission. The center terminal of the switch is connected to the wire that leads down to the oil pressure switch on trans case. Transmission identification for 700r4 tonys 700r4 pages. Buick rainier, buick roadmaster, cadillac escalade, chevrolet astro, chevrolet s10 blazer, chevrolet camaro, chevrolet corvette, gmc canyon. Installation instructions th700r4 4l60 transmission. When installed in a 4l65e or 4l70e, a sonnax level 3 build delivers a big power tranny that not only exceeds the capabilities of the 650 ftlb 4l75e, but is moving well into 4l80. I decided to buy a newer pump and just replace the pump, thus fixing the problem. All rights reserved prefix letter t denotes toledotrans kit ttk brand transmission kits. In 1994, gm started using the 4l60e in all rearwheel drive cars, until 2001 when performance demands had increased beyond its current capacity, and it was replaced with the 4l65e. Input clutch 547 777 309 pump body 537 380 482 178 554 480 0000 input drum 750.
Jun 02, 2018 if your 700r4 is having a problem with harsh vibration going down the road, its more than likely loose torque converter bolts, or a driveshaft that needs balancing. Internal pressure passages on the 700r4 prevent the torque converter from locking up in first gear. Information about rebuild 4l60e 700r4 transmission. During the removal of the aux il ia ry valve body, the check ball located inside will drop out.
Its been over 20 years since the 700r4 made it into a production vehicle. Then i remembered that one of the guys in my corvette club had taken the 700r4 out of his 89 corvette and replaced it with a zf 6 speed manual trans. Video series showing the rebuild of the 4l60e 700r4 transmission. This manual explains the theory and operation of the thm 700r4 automatic transmission. Remove the pressure regulator assembly from the transmission pump. Buick rainier, buick roadmaster, cadillac escalade, chevrolet astro, chevrolet s10 blazer, chevrolet camaro, chevrolet corvette, gmc canyon, gmc envoy, gmc safari, gmc savana, gmc sierra. Replace the filter if it is dirty or has not been changed in over 25,000 miles. In later pumps the bushing must be installed from the inside of the pump because gm left a machined lip to help prevent the bushing from walking out the front. Use a screwdriver to hold the pressure regulator assembly while removing the retaining ring. Multiple warehouse locations in las vegas and the east coast gets you transmission parts fast. Oct 20, 2018 700r4 plug wiring diagram wiring diagrams hubs 700r4 lockup wiring diagram wiring diagram contains several detailed illustrations that present the connection of varied things. This is often a sign of a bad governor gear, or a tv cable that is not returning back when you let off of the throttle.
The key distinction of the 700r4 4l60 early 4l60e from the later 4l60e is the four bolt rear output or tailhousing adapter pattern. Remove two sleeves with valves and the pressure regulator spring. Transmission rebuild how to convert your 4l60e to 4l65e. While they have been fairly reliable over the years, we have written this guide specifically to help with troubleshooting your 700r4 transmission. This pressure now becomes tv pressure, indicated in yellow on the diagram. Need help wiring adjustable vacuum lockup switch for a 700r4. This unit is basically a thm 700r4 with electronic controls added to the valve body.
The l denotes that the transmission is longitudinally positioned. Upgrade your ride from bias to radial tires and learn how to build your own beadlock rim for your 4x4. All the wires at the connectors have alphanumeric addresses showing where the other end of the wire is located ac cording to the grid. The diagram is surrounded by a alphanumeric loaction grid. Rebuild your th700r4 automatic transmission at home. The later 4l60e has a six bolt hex rear bolt pattern and a removable bellhousing. There are several manuals, dvd and videos found online to aid the diy person with the rebuild process for these transmissions. When re in stall ing valve body, this check ball must be used. Remove the pickup tube oring from the pump if it does not come out with the filter. Balance oil pushes the tv valve to a position which blocks the feed from tv limit oil.
Passage id air check no part of any atsg publication may be reproduced, stored in any retrieval system or transmitted in any form or by any means, including but not limited to electronic, mechanical, photocopying, recording or otherwise, without written permission of automatic transmission service group. Remember, 4l60 was just another moniker for gms popular overdrive. Tv limit oil, indicated in orange, enters between lands 2 and 3. This covers most small block chevrolets and mild big blocks. The recommended transmission fluid is dextron vi with a capacity of. Tci performance transmission installation instructions.
If the sleeves stick in the bore, lightly rap the sleeve with a small rod and a mallet piece of 2x4. The following image might be a little hard to make out, but it shows how i wired in a dpdt. Real world wiring diagram the fuse holders connect to the vehicles fuse block. If you are instal ing a new converter and transmission, skip to step 3. Installation instructions th7004l60 shift improver kit 1982. Nov 19, 2011 internal pressure passages on the 700r4 prevent the torque converter from locking up in first gear. I installed a toggle switch in mine in addition to the vacuum switch just so i can lock the converter up if i want to cruise in 3rd for a while without the. Thm 4l60e electronic automatic overdrive transmission. Aug 04, 2012 gm fixed this problem by machining a lip in the pump to keep the bushing from moving.
This is an old draft of some th400 oil pump technical information. Section a disassembly and inspection of the oil pump figure 10a1 is the master schematic of the oil pump and related components. If it has a boss, you need to make sure you have the isstype stator support sleeve. Thm 700r4 4l60 19821986 atsg automatic transmission. The pump housing will only orient one way, since there is only one area of the pump.
Input drum pump and reverse drum valve body and pan case and components. Tv oil gets routed through a small tv balance orifice to land 1. The easiest way to identify a 700r4 underneath of the car is to look at the bolts. There are at least ten 10 different wiring arrangements that are found in the 700r4 transmission valve body. Different engine sizes and emission standards dictate what wiring was needed for a particular application. So for a summary, the 700r4 transmission was a 4geared hydraulic automatic transmission with the 4th gear which was an overdrive gear 30% increase. Before you remove any wires or switches, take time to draw your own diagram of the location of your valve body wiring, terminal locations and connections. Wiring diagrams description these diagrams use a new format. This is an old draft of some th400 oil pump technical. Most 700r4 trans mis sions now have this auxiliary valve body figure 2.
The 700r4, 4l60, and 4l60e have the same external dimensions and case. The shift pattern is controlled electronically with 2 shift solenoids that recieve a ground signal from the powertrain control module pcm. Section a disassembly and inspection of the oil pump figure 10a1 is the master schematic of the oil pump. Install the pump into the front of the transmission making sure the gasket is aligned properly, and the pump bushings clear the input shaft without being damaged. Push down on the tv boost valve sleeve while removing the retaining ring. When re in stall ing valve body, this check ball must be used figure 3. Diagrams supplied by general motors and atsg have been noted and are the property of the credited entity. This is a very popular transmission used on many gm light duty trucks and rwd passenger cars.
Gm fixed this problem by machining a lip in the pump to keep the bushing from moving. The following information is what ive found out over time and what i encountered installing it in a 1979 z28 camaro. As mentioned, the 700r4 was a 4 speed automatic transmission. The following wiring diagrams do not necessarily represent the correct wiring diagram for a stock 700r4 as these can vary. I need a valve body diagram 700r4 transmission out of a 1988 chevrolet gmt400. The 4l60e is a fully automatic rear wheel drive transmission. Th700r4 through 4l70e tips and tricks crankshaft coalition wiki. If the input shaft looks like the earlier styles, youll need the earlier style pump. There is a small gasket that fits on the filter tube. When it comes to doing any sort of troubleshooting on a vehicle i think it is incredibly important to work from a most likely to least likely philosophy, but also weighing. Lift the valve body off of the case, sliding the manual valve link out of the. Dec 11, 20 video series showing the rebuild of the 4l60e 700r4 transmission. The thm 700r4 transmission is a fully automatic unit consisting of a 3 element torque converter with the addition of a converter clutch. I installed a toggle switch in mine in addition to the vacuum switch just so i can lock the converter up if i want to cruise in 3rd for a while without the slippage of the converter causing unnessary heat to build up.
If the unit you are working on doesnt have an iss, pay close attention to the input shaft figure 9. Aug 10, 2018 gmread online now 4l60 e transmission repair manual ebook pdf at our library get transmission repair manual pdf file for free from our online librarygm 700r4 gm 700r4 service manual pdf rebuild manual before service or repair your atsgtransmissionrepairmanualfor4l60hsdhmwj. If you have a clear view of the transmission count the bolts. The higher you raise it, the easier it will be to work under. Rebuild a 700r4 automatic transmission part 2 powernation. Thm 700r4 4l60 1982 1986 atsg automatic transmission service group pdf free online. Paul zank of technical video gives you the step by step do it yourself instructions 4 wheel and offroad magazine. Figure 73 typical thm 700r4 control valve assembly. Monster transmission provides transmission parts for all transmission year, make, and models. The descendent of the 700r4, the 4l60e trans has a long history of backing up some fairly potent motors. Jun 29, 2018 curt from curts corner takes you step by step through the tear down process of a 700r4 automatic transmission. Installation instructions th7004l60 shift improver kit. Curt from curts corner takes you step by step through the tear down process of a 700r4 automatic transmission. It is suitable for use behind engines producing up to 450 lbft of torque.
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