Discovery 2. Manual - part 142

TRANSFER BOX - LT230SE

OVERHAUL

41-71

7. Remove high range gear and bush. 
8. Make suitable alignment marks between  high/

low selector sleeve and hub, remove  selector 
sleeve. 

9. Using a suitable press and thrust button  LRT-

41-001remove high/low hub and  low range 
gear. 

Reassembly

1. Clean differential components. 
2. Lubricate components with gearbox oil. 
3. Fit differential in soft jawed vice,  and fit low 

range gear with dog teeth facing  uppermost. 

4. Fit high/low hub ensuring that machined  

groove on hub teeth faces towards low range  
gear. 

5. Fit high/low selector sleeve ensuring  that 

alignment marks on hub and sleeve are  
together. 

6. Fit bush to high range gear ensuring  collar is 

uppermost. 

7. Fit high range gear and bush onto shaft. 

TRANSFER BOX - LT230SE

41-72

OVERHAUL

8. Fit rear bearing using tool LRT-41-008.  

9. Fit  new bearing retaining nut and using tool 

LRT-41-007, tighten to  72 Nm (53 lbf.ft). 

CAUTION: Ensure that threads of nut are 
'Patched.'

10. Using a suitable drift, stake collar of  nut into 

differential shaft recess. 

11. Fit differential.  

 

 + 

 TRANSFER BOX - LT230SE, 

OVERHAUL, Differential assembly.

AUTOMATIC GEARBOX - ZF4HP22 - 24

DESCRIPTION AND OPERATION

44-1

AUTOMATIC GEARBOX - ZF4HP22 - 24

DESCRIPTION AND OPERATION

Automatic gearbox component layout

1 Selector lever assembly
2 Gearbox
3 Electronic automatic transmission ECU
4 Selector position switch

5 Oil cooler
6 Fluid lines
7 Breather tube
8 Selector cable

AUTOMATIC GEARBOX - ZF4HP22 - 24

44-2

DESCRIPTION AND OPERATION

Control schematic