Transmission & Axles

• Gearbox
• Transfer Case
• Ratios
• Propshafts
• Rear Axle
• Front Axle

From Engine No. RL9784 onwards, a modified clutch pressure plate was introduced, with sixteen coil springs and 4 release arms; as opposed to the nine springs and 3 release-arms of the older type.

Gearbox

Transfer Case

Overall Ratios

Winch Gear

Propellor Shafts

Three, with Hardy Spicer needle roller bearing universal joints.

Rear Axle

Fully-floating, with hypoid final drive, drive andtorque taken through rear springs. Pinion straddle-mounted between roller bearings. 3-pinion differential.

• Twin Rear-Wheel Equipment: Axles with twin rear-wheel hubs have exactly the same servicing procedures as for single-wheel equipment, except that the hubs are modified with eight wheel-hub bolts instead of ten, as on single wheels, and the axle-shafts are approximately 1 inch shorter.

  Twin rear-wheel equipment axles are not interchangeable with single-wheel equipment.

• From Chassis No. R26778, outer axle ends increased in thickness and other machining altered. This requires new inner taper roller bearings, oil seals, and oil deflectors, to suit.

• From Chassis No. R26875, the rear axle shaft attachment studs are increased from 7/16in. to 1/2in., and the axle shaft flange is revised to suit.

  The studs must be tightened to a torque of 60-65 lb. ft. (81-88 N m)

• From Chassis No. R28232, new higher-level breathers were introduced to permit fording in shallow water, by way of an extension pipe and rubber tube into the chassis. The front axle is modified similarly.

• From Chassis No. R30640, the rear axle pinion was strengthened by an increase in radius between the innear bearing journal and shoulder. This requires a new bearing with a larger radius at one end of the inner bore.

• At Chassis No. R35082, the gear thrust pad and hexagon headed thrust pad screw, have been replaced by a pad and a milled head screw.

  Install thrust pad & screw, and tighten until pad just contacts the hypoid gear. Slacken back 45° (1/8 turn) to obtain correct clearance and tighten locknut. Shims are not required with this arrangement.

• At Chassis No. R37950 the gear thrust pad and screw are changed again. The new thrust screw has a hardened end which contacts the gear, replacing the previous pad and screw.

  Adjustment process remains the same as the previous part.

• Three of the differential side-bearing-cap bolts are through-holes into the housing. The bolt threads must be smeared with a sealing compound to prevent water ingress during fording. This also applies to the front axle.

• The handbrake bell crank lever upper support bracket is attached to the axle housing by two bolts. These are also through-holes and require sealant upon reassembly, to prevent water ingress during fording.

Rear Suspension

Semi-elliptic, progressive type spring, with second leaf extending forward around spring-eye.

Front Axle

Differential and hypoid gear assembly common with rear axle. Enclosed front-wheel drive. Steering pivots taken by taper roller bearings. Front hubs mounted on taper roller bearings.

• Twin Rear-Wheel Equipment: Front hubs are modified to take the smaller wheels, the hubs having eight wheel hub bolts. Hub bearing dimensions are unaffected by the change.

• From Chassis No. R28233 the front axle shaft attachment studs are increased from 7/16 in. to 1/2 in., with a corresponding increase in axle shaft flange hole size.

  The larger studs must be tightened to a torque of 60-65 lb. ft (81-88 N m)

Front Suspension

Semi-elliptic with second leaf extending forward around spring-eye. The rear section of the spring incorporates a wind-up restriction plate.

Shock Absorbers

Double-acting hydraulic, front and rear.