Land Rover Defender 90 Workshop 2nd Edition Nas Rover Manual

44AUTOMATIC GEARBOX
4
DESCRIPTION AND OPERATION Reverse gear
Clutches 5, 8 and 11 are engaged. Since the front planet gear carrier of epicyclic gear set 9 is locked, the direction
of output-shaft rotation is reversed. Epicyclic gear set 10 also rotates as a solid block. 

AUTOMATIC GEARBOX
1
FAULT DIAGNOSIS ZF AUTOMATIC GEARBOX
Before referring to fault symptoms, carry out initial
static checks first:
INITIAL STATIC CHECKS
Check start positions P & N only........................................................
Reverse lights R only..................................................................
Gear engagements N-D,N-3,N-2,N-1,N-R..........................................................
Full throttle Engine switched off, check full travel at engine and...

44AUTOMATIC GEARBOX
2
FAULT DIAGNOSIS ROAD TEST PROCEDURE
Follow the procedure given commencing each test,
from a standing start, on a level road, in good weather
conditions.
ROADTEST 1 = CHECKS 1-2-3-4-5-6-7-8
D SELECTED KICKDOWN START FROM REST
CHECK 1
Check for clutch squeal and slip. Check pressure is
150lbf/in
2
CHECK 2
Check 1st to 2nd upshift speed and quality. Pressure
should fall to 120 lbf/in
2.
CHECK 3
Check 2nd to 3rd upshift speed and quality. Pressure
should fall to 100 lbf/in
2
CHECK 4...

AUTOMATIC GEARBOX
3
FAULT DIAGNOSIS ROADTEST 3 = CHECKS
12-13-14-15-16-17-18-19-20-21-22-23
D SELECTED FROM REST
LIGHT THROTTLE START
CHECK 12
Check 1st to 2nd upshift speed and quality.
CHECK 13
Check 2nd to 3rd upshift speed and quality.
CHECK 14
Check 3rd to 4th upshift speed and quality.
NOTE: This shift is usually very difficult to
detect but can be confirmed by a 200 rpm
drop in engine speed.
CHECK 15
Check speed and quality of shift into direct drive
clutch, confirmed by 300 rpm drop in engine...

44AUTOMATIC GEARBOX
4
FAULT DIAGNOSIS AUTOMATIC GEARBOX ASSEMBLY
1. Gearbox assembly
2. Inhibitor switch assembly
3. Control unit assembly
4. Filter and sump assembly 

AUTOMATIC GEARBOX
5
FAULT DIAGNOSIS 1. Torque converter housing assembly
2. Gearbox pump and casing assembly
3. Governor and adaptor housing assembly 

44AUTOMATIC GEARBOX
6
FAULT DIAGNOSIS 1. A Clutch assembly
2. B Clutch assembly 

AUTOMATIC GEARBOX
7
FAULT DIAGNOSIS 1. C,C and D Clutch assembly 

44AUTOMATIC GEARBOX
8
FAULT DIAGNOSIS 1. Freewheel and fourth gear assembly 

AUTOMATIC GEARBOX
9
FAULT DIAGNOSIS 1. E and F Clutch assembly