Dear All Yet another newbie question,having been underneath I noticed a "wire" coming out of the rear of the gearbox and going through the mounting bracket,my first idea was a reversing switch...but no wires,having trawled through the manual (s) there is no mention of this...it seems under tension...my second guess is a tensioner for some kind of detent in the gearbox ?
Although it is attached to the gearbox, it is listed under "engine" in the parts book as the "engine steady cable". It is there simply to prevent the engine and gearbox moving forward under extreme braking or impact when the engine moving forward could mean the fan touching the radiator - which you wouldn't want to happen!
It is of benefit to increase the size of the three 1/4" bolts securing the front cable flange to the gearbox casing to 5/16" diameter. The 1/4" bolts have a tendency to pull out of the gearbox casing if hard braking is regularly undertaken. Phil
I agree that the basic problem is the fine 1/4" x 20 TPI UNF threads and they not man enough for the job. BMC were remiss in not specifying the increase in diameter and the use of a UNC thread when the steady cable was introduced (see wksp Man section AA36 for details). The BMC specification just allowed for the use of the three 1/4" UNF bolts already in place. If you can - drill the gearbox casing and re-tap using 5/16" x 18 TPI UNC threads.. The tapping drill size is 6.6mm. Just be careful not to go right through the gearbox casing - just deep enough to suit the set screw or even better use 5/16" UNC studs (note: a stud should be screwed into the material for a depth of 1 1/4" times its diameter as a minimum) Re-drill the front cable bracket holes to 5/16". When securing the set screws or studs into the gearbox casing use Loctite lock and seal.