THM 440-T4 – CENTER GEARBOX DISTRESS (LUBE CHANGES)

COMPLAINT: Repeated failure of the 3rd roller clutch and/or the input sprag.

CAUSE: Lack of lube oil to 3rd roller clutch and input sprag. Find more obd2 code reader for hlep?

CORRECTION: Modification as follows, of the parts indicated, will increase lube flow to both the 3rd roller clutch and the input sprag.

1 . MODIFY OUTPUT SHAFT:
Grind four (4) flats on the output shaft at the front of the bearing in the locations.

2. MODIFY OUTPUT SAHFT BEARING:
Remove idividual needle bearings, in three equally spaced locations around the bearing, to provide three “Troughs” for additonal lube oil to flow. Removing the needles does not impair the durability of the bearing assembly.

3. MODIFY ASSEMBLY PROCEDURE:
When installing the sprag assembly onto the input sun gear, align one of the three lube oil holes in the inner race, with one of the two lube oil holes in the input sun gear.

THM 4L60 (700-R4) HIGH LINE PRESSURE

COMPLAINT: Very harsh upshifts, all gears, harsh engagement forward gears and reverse.

CAUSE: High line pressure. The cause of the high line pressure can be a hung pressure regulator valve, or a binding slide in the pump body. The bind of the slide can be caused by mis-tightening the pump body to the pump cover. Another possible cause can be a blown orifice cup plug located in the pump cover shown in Figure 1. This cup plug is in the reduce pressure oil circuit.

CORRECTION: CORRECTION: The problem can be corrected by replacing the orifice cup plug. The orifice in this plug is .040-.045.

LUBE CHANGES

Also recommend some car tools like Car ECU Programmer and MS509 Scan Tool , which may be helpful to know auto repair.

Use OBD2 Scanner Recommend MS509 Scanner

From most obd 2 car diagnostic tool , I recommend you go to obddeal.com, why because I have used many good car scanners such launch x431 tool, creader v, creader 6 ,digimaster iii, and so on.

I think vtoolshop have good obd 2 car diagnostic tool.

MS 509 scanner is one of the good car tools in OBDDeal. today I want to share the MS 509 use tips and the technology.

Here you can have a quick shoot at the ms509 car diagnostic tool images:

MaxiScan MS-509

You can see the tool is with the cd player and you should install the software for the ms 509 car tool , so I want to suggest you that before you use the tool , you should install the software and use it carefully.

And then see these function of the Maxiscan MS509

Works with all 1996 and later OBD-II compliant US, European and Asian vehicles
Easily determines the cause of the Check Engine Light
Retrieves generic (P0, P2, P3, and U0) and manufacturer specific (P1, P3, and U1) codes
Turns off Check Engine Light, clears codes and resets monitors
Displays DTC definitions on unit screen
Views freeze frame data
Displays monitor and I/M readiness status (emissions)
Identifies pending codes
Reads live PCM datastream
Displays live O2 sensor test data
Graphs data C (1996 and newer)
Reads, stores and plays back live sensor data
Memory/battery backup for off-vehicle data review and analysis
Multilingual menu and DTC definitions— English, Spanish, French, German
Retrieves vehicle information (VIN, CIN and CVN)
Supports CAN (Controller Area Network) and all other current OBD-II protocols
Built-in OBD-II DTC lookup library
Large easy-to-read backlit LCD screen
Software upgradeable via Internet
Prints data to PC via included USB cable
Utilizes standard 16-pin OBD-II connector; no additional connectors or cables are necessary
The MaxiScan OBDII/EOBD Scanner supports all nine OBDII test modes on all OBDII compliant vehicles to enable technicians to accurately diagnose even the toughest problems. Sophisticated yet easy-to-use, this ergonomic scan tool displays live O2 sensor test data and reads live PCM data stream. It features multilingual menu, large easy-to-read backlit LCD screen and displays DTC definitions on unit screen. This scanner retrieves vehicle information, identifies pending codes, views freeze frame data and easily determines the cause of the Check Engine Light. This scanner comes with built-in OBD-II DTC lookup library and is software upgradeable via internet. It performs modules present test, reads, stores as well as playbacks live sensor data and prints data via PC.

You know most obd 2 scanner have quiet a lot technology tips , so every function can make a big difference . if you can’t get the details clearly , you can see this video of the MS509 Scanner http://www.youtube.com/watch?v=SeA_OaIoepk

From this video you can see the Maxiscan ms509 – OBD2 Scanner

I have one view : it has a couple of options .. and could porbar several vehicles and depending on it are enabled these options and see some of the ABS and automatic transmission. obviously apart from the engine … I remember that vehicles were …

 

Be happy to get good ms 509 tool : http://www.obddeal.com/autel-maxiscan-ms509-code-scanner-p-2828.html