sv: sv: sv: Hvilken type autobox på Td5? (17-02-2007 23:39:44)
carsten Pedersen
The automatic gearbox is a four speed unit with electronic control of gear selection, shift quality and torque converter lock-up. Selections on the selector lever assembly are transmitted to the gearbox by a selector cable. A gear position switch on the gearbox transmits the gear selection to an Electronic Automatic Transmission (EAT) ECU, which outputs the appropriate control signals to an electro-hydraulic valve block in the gearbox. A mode switch enables the driver to change the control mode of the EAT ECU. The EAT ECU operates warning lamps in the instrument pack to indicate the control mode and system status.
On NAS market vehicles from 03 model year, the ZF 4HP24 transmission unit is introduced for use with the 4.6 litre V8 engine. This transmission is required to accomodate the increased power output of the larger engine. The ZF 4HP22 transmission remains in use on vehicles with Td5 and 4.0 litre V8 engines.
The LT 230SE transfer box is mounted at the rear of the gearbox and transmits drive via high or low reduction ratios to the front and rear axles via the propeller shafts. The high/low ratios are 1.211:1 and 3.32:1 respectively.
Transfer boxes fitted to this model have the prefixes 41D and 42D to the unit serial number. Prefix 41D denotes that the unit is not fitted with interlock whilst 42D denotes that interlock is fitted.
Vehicles up to 03 model year - Whilst similar to LT230Q transfer boxes fitted to other models, the LT230SE transfer box has certain engineering modifications incorporated which are as follows:
Uprated torque capacity
Modified front and rear output and cross shaft housings
Intermediate gear bearing pre-load now controlled by a selective, non-collapsible spacer
Speedometer drive and driven gears not fitted for this application
Modified high/low sleeve
Modified front output flange and mud shield
Differential lock fitted to certain vehicles, but no longer driver operated
Fixed setting of differential lock warning lamp switch on vehicles fitted with differential lock
Vehicles from 03 model year - The LT230SE transfer box is as described above for vehicles up to 03 model year with the following modifications:
The following items are introduced on vehicles from 03 model year
Ribs added to main casing to reduce operating noise
Revised machining process for intermediate gears to reduce operating noise
Bearing retaining nut on the differential carrier has patchlock added to the threads
Interlock solenoid moved from main casing to selector lever assembly
Intermediate gears modified with machined internal shoulder and bearing circlips deleted
Driver operated differential lock
High/Low selector shaft fitted with spring assist
Existing differential lock switch replaced by 2 new switches of improved design with the additional switch installed adjacent to the existing switch location.
Sorry, men jeg har lidt travlt.
Carsten