Land Rover Propeller Shafts Rover Manual

							PROPELLER SHAFTS
Freelander15
1. Cylinder
2. Slotted discs
3. Input shaft4. Roller bearing 
5. Ball bearing
6. Output shaft     
The rear wheels are 0.8% under driven, so in most conditions the vehicle is effectively front
wheel drive, with the rear wheels turning the rear propeller shaft slightly faster than the IRD
drives the front propeller shaft. Since the speed differential is low, the increase in viscosity of
the silicon jelly is marginal and there is little resistance to relative rotation of the slotted discs.
When there is a significant speed differential between the front and rear  propeller shafts, e.g.
when the front wheels lose traction or when traversing rough terrain, the viscosity and
resistance to rotation of the silicon jelly increases to a level that slows or stops relative rotation
of the slotted discs. With the front and rear propeller shafts locked together, drive is thus
transferred from the IRD to the rear wheels.
 Propeller Shaft Bearings
The two propeller shaft bearings are identical, and each consist of a roller bearing race
mounted into a centre bearing housing. The bearing is sealed-for-life and is a press fit on the
input/output shaft of the VCU. Bearing covers and slingers prevent the ingress of moisture.
REAR PROPELLER SHAFT
The rear propeller shaft consists of a thin walled tube with a conventional universal joint welded
to each end. The rear universal joint is bolted to the input flange of the final drive unit. The front
universal joint is splined to the output shaft of the viscous coupling unit and secured by a bolt
and tab washer. Both universal joints incorporate serviceable, sealed needle bearings. 
						

							PROPELLER SHAFTS
16
NOTES 
						

							PROPELLER SHAFTS
New Range Rover17
Propeller Shafts
New Range Rover
NEW RANGE ROVER DRIVE AND PROPELLER SHAFTS COMPONENT 
LOCATION
1. Front RH drive shaft
2. Mounting bracket
3. Engine sump
4. Transfer box
5. Rear propeller shaft assembly
6. Rear RH drive shaft
7. Rear differential
8. Rear LH drive shaft
9. Support bearing
10. Front propeller shaft
11. Front LH drive shaft
12. Front differential 
						

							PROPELLER SHAFTS
18
NEW RANGE ROVER DRIVE AND PROPELLER SHAFTS
GENERAL
The front drive shafts are handed components with the RH drive shaft being longer than the LH
drive shaft. Both shafts are of similar construction with constant velocity (CV) joints at each end
to allow for steering and suspension movement.
The rear drive shafts are identical with a CV joint at each end to allow for suspension
movement.
Propeller shafts are used to transmit drive from the transfer box to the front and rear
differentials.
The front propeller shaft is a one piece unit, connected to the transfer box by a flexible rubber
coupling and mating with the front differential unit via a splined shaft.
The rear propeller shaft is a two piece unit, supported on a central bearing due to its increased
length. The propeller shaft is connected to the transfer box and the rear differential with CV
joints. A universal joint allows for the angular deviations of the propeller shaft due to
acceleration and braking.
FRONT DRIVE SHAFTS
The front drive shafts are similar in their construction. The only difference is the lengths of each
shaft. The LH drive shaft has a total length of 677 mm. The RH drive shaft is a longer shaft
which passes through a housing and the engine sump to the differential and has a total length
of 1024 mm. 
						

							PROPELLER SHAFTS
New Range Rover19
LH drive shaft shown, RH drive shaft similar
1. Snap ring (3 off)
2. Drive shaft
3. Outer CV joint
4. Stake nut
5. Inner CV joint
The outer CV joint has a target on the outer diameter. This is used by the ABS wheel speed
sensor for vehicle and wheel speed calculations. Refer to the Braking section for further details.
Each drive shaft consists of two CV joints and gaiters, an outer tube, a solid shaft and a ball
cage assembly. 
						

							PROPELLER SHAFTS
20
Front Drive Shaft – Sectional View
LH drive shaft shown, RH drive shaft similar
1. Outer CV joint
2. Clamp
3. Outer tube
4. Sealing plug
5. Ball cage
6. Shaft
7. Inner CV joint
8. Snap ring – differential
9. Snap ring
10. Gaiter
11. ABS sensor target ring
9 10
10
9
M47 0439
18
7
2 6
2 5
4 23
2
11 
						

							PROPELLER SHAFTS
New Range Rover21 The CV joints are of the Birfield design. This design uses longitudinal, elliptical grooves which
retain six steel balls. The balls are further retained by a cage. The constant velocity is achieved
by the position of the steel balls. If a centre line is drawn through the balls and the driven hub or
differential shaft, the two centre lines always bisect each other at the angle of drive. This
condition allows the rotational speed of the driven shaft to be passed to the driven hub or
differential shaft with no loss of rotational speed regardless of the shaft angle. The CV joints are
packed with grease which is retained in the joint by a synthetic rubber gaiter. The gaiter is
retained at each end by a metal clamp which provides a water tight seal to prevent the ingress
of dirt and moisture. The CV joints are retained on their respective shaft or tube by an internal
snap ring. The snap rings are located in a groove on each shaft or tube end and locate in a
mating groove in the CV joint. The CV joints can be removed by a sharp tap with a soft mallet on
the CV joint housing which releases the snap ring from the groove.
The shaft is a sliding fit inside the outer tube which allows for the small length changes which
occur with articulation of the suspension. The shaft is located in a ball cage which is retained
inside the outer tube. The ball cage ensures that the shaft is held rigidly in the outer tube while
allowing it to freely move in and out of the tube as necessary. A sealing plug is pressed into the
outer tube and retains grease around the balls in the cage.
The inner CV joint shaft is splined and mates with splines in the front differential. A snap ring is
located around the inner shaft and, when fitted in the differential, locates in a mating groove in
the differential splined bore. The CV joint shaft is removed from the differential in a similar
manner as removing a CV joint. 
						

							PROPELLER SHAFTS
22 REAR DRIVE SHAFTS
1. Drive shaft
2. Outer CV joint
3. Stake nut
4. Snap ring (2 off)
5. Bolt M12 (6 off)
6. Shim (3 off)
7. Inner CV joint
The rear drive shafts are identical in their construction. Each drive shaft has a total length of 687
mm. The inner CV joint has six holes for attachment with bolts to the differential output flange.
Each pair of bolts is fitted with shim which secures the bolts after tightening.
The outer CV joint has a target on the outer diameter. This is used by the ABS wheel speed
sensor for vehicle and wheel speed calculations. Refer to the Braking section for further details.
Each drive shaft consists of two CV joints and gaiters and a tubular shaft. 
						

							PROPELLER SHAFTS
New Range Rover23
Rear Drive Shaft – Sectional View
1. End cap
2. Inner CV joint
3. Circlip
4. Gaiter
5. Tube
6. Outer CV joint
7. ABS Sensor target ring
8. Snap ring
9. Clamp
10. Circlip
The CV joints used on the rear drive shafts are of the Birfield design. Refer to the Front Drive
Shafts for a description of the CV joints.
The outer CV joint is retained on the tube by an internal snap ring. The CV joint can be removed
by a sharp tap with a soft mallet on the CV joint housing which releases the snap ring from the
groove. The inner CV joint is retained on the shaft by two circlips. This CV joint is different in
design to the outer CV joint but the operating principle is the same. An end cap is pressed over
the inner end of the CV joint to prevent the ingress of dirt and moisture. Both CV joints are fitted
with gaiters which are secured with metal clamps.
7
M47 0441
98
9 9 94 23
15
6
4
   
10 
						

							PROPELLER SHAFTS
24 FRONT PROPELLER SHAFT
1. Front propeller shaft
2. Nut M12 (6 off)
3. Coupling adaptor
4. Coupling
5. Bolt M12 (6 off)
6. Seal
The front propeller shaft is constructed from 2.1 mm wall tubular steel. A three arm coupling is
welded at one end. The opposite end has a splined shaft welded to the tube. The shaft has an
overall length of 752 mm.
The three arm coupling has three holes which allow for attachment to the coupling and the
coupling adaptor. The coupling adaptor and the coupling are secured to the shaft with three
bolts and nuts. The flexible coupling attaches to the front output shaft of the transfer box and is
secured with bolts in the three remaining holes in the coupling.