This is from the B20/B24 6th Series Instruction Book but applies to most other models taking into account the different general arrangements of the parts, such as the hydraulic fluid reservoirs.
Every 2000 Miles
Gearbox-differential unit
Rear inner joints
Rear outer joints
Clutch
Check oil level & fill if necessary
Check oil level & fill if necessary
Grease with pressure greaser
Check free play of pedal
Every 4000 Miles
Centre bearing of propeller shaft
Clutch shaft
Grease
Grease with special grease (Sferul ‘L’ D Reinach Oleoblitz?)
Every 6000 miles
Oil filter on propelling unit
Gearbox-differential unit
Remove & wash carefully with petrol
Replace oil: 5.75 pints
Gaskets & Seals
The following information is incomplete & on-going. It results from working with B20 3rd& 4th Series spares both new & used during 2008-2009. The pictures were drawn from real examples of the gaskets, mostly original examples.
Part No.
Description
Picture of Gasket/Seal
82126575
Clutch – Gasket from clutch bell housing to propelling unit. SII-Tav.26#12. Paper 0.4mm, 1 off. Maximum outside dimensions are approx. 185 x 205 mm
82126604
Clutch – Gasket/O-ring seal at rear of clutch shaft. SII-Tav.26#13. 1 off req’d
4166023
Clutch – Gasket/O-rings at front end of clutch input shaft. SII-Tav.26#11. 2 off req’d
82126638
Gearbox – Gasket for gear selector housing to gearbox. SII-Tav.31#14. Paper 0.4mm, 1 off req’d. Maximum outside dimensions are approx. 95 x 125 mm.
82126639
Gearbox – Gasket for gearbox bottom plate. SII-Tav.31#15. Paper 0.2mm, 1 off req’d. Maximum outside dimensions are approx. 195 x 175 mm rectangular.
82126912
Gearbox – Gasket for gearbox right side cover plate. SII-Tav.31#18. Dimensions approx. 250 mm od, 210 mm id, paper 0.6mm, 1 off req’d.
82126931
Gearbox – Gasket for gearbox to rear mounting casting. SII-Tav.31#19. Paper 0.4mm, 1 off req’d. Maximum outside dimensions are approx. 112 x 163 mm rectangular.
82126914
Gearbox – Gasket for left hand bearing housing. SII-Tav.30#17. Dimensions approx. 112 mm od, 83 mm id, paper 0.4mm, 1 off req’d.
82126924
Gearbox – Gasket for pot-joint to gearbox. Tav.52#13 Dimensions approx. 157 mm od, 120 mm id, paper 0.6mm, 2 off req’d.
82117573
Gearbox – Gasket for speedo drive cover plate. SII-Tav.30#15. 1 off req’d. Same as Aprilia
82126729
Gearbox – Gasket/O-ring for gear selector housing reverse control cover. SII-Tav.31#17, 1 off req’d.
82126890
Gearbox – Gasket/O-ring for outer CVJ, 8 off req’d.
82129921
Gearbox – Gasket/O-ring on speed drive exit shaft. SII-Tav.30#16, 1 off req’d. B20 2.5
82126734
Gearbox – Gasket/O-rings for gear selector input shaft. SII-Tav.31#16, 2 off req’d.
82117571
Gearbox – Gasket/O-rings on speed drive mounting. SII-Tav.30#14, 2 off req’d. Same as Aprilia
