I think these pumps use fuel pressure as part of the regulation system - certainly my Citroen BX with a roto-Diesel (successor to CAV- via Lucas) did. With air in the system the thing would run faster - potentially disastrous as its uncontrolled - but there's usually not enough fuel to cause...

There are 3 possible sensors powering the brake warning light. They are PDWA (pressure differential warning actuator) which monitors the pressure between the 2 circuits and tells you if one has failed, servo vacuum (sensor on servo diaphragm case) and excessive pedal travel - second switch on...

Is it in the UK? If so - where? - even a county would be some help.

The pedal - cylinder operating rod needs backing off. Take off top pedal box top cover and slacken the locknut nearest the cylinder - and adjust the thing so there's a little slack in the rod. When its right - lock the nuts again - I found one where the nut had run right down the thread...

I've done it by very carefully scratching the paint off with a wire brush on a bench grinder. Bit brutal if you slip . . .

If its the standard towplate you'll have a spacer on the back in line with the large chassis bolts. This is so it clears the body mounting flange - and you need some form of spacer for the top bolts - like a few washers or similar.

The red lever MUST be right forward for the yellow knob to lock down. If its in the neutral position the yellow knob won't stay down. Take the drivers side floor out and you should be able to see the linkage. Pushing the yellow lever down simply pulls a pin out and allows a collar to slide...

Screen vents are part of the heater only. Heater air circuit is wing/blower, trunking to matrix - through dash into chamber behind the crash padding. That has outlets in its top face for the demister vents (bits of plastic pipe which always fall off lead it to the metal plate you show (should...

The ones I've fitted haven't lined up with the holes in the tub. Best to find out early on and decide how you're going to deal with the problem. I was enable to enlarge holes etc but it was annoying - and leads you to think you've done something fundamentally wrong. Work out how you're going...

Or if your cowardly jack up a front wheel and try and turn it. If it turns freely - its in 2WD. If its in 4WD high you'll probably feel the steering pull especially on tight corners.

I find it easiest to adjust the master cylinder by locking the nut nearest the cylinder using a large screwdriver as a wedge between the nut and the housing - then using a ring spanner on the nut the other side of the trunnion. Needs to be a little play to allow the piston tho return fully and...

I think its the relationship between the locking tongue and the lock itself - if you knock the very small split pin out, take the tongue off, turn it round and refit it all may be well.

Military is the same as civilian - unless its a lightweight of course. There are 2 types of S3 bulkhead. Difference is about 1980 and concerns the transmission tunnel. Earlier ones have a flange pointing backward like an 80in, S1 and S2/2a. Later ones it unbolts - with an additional piece...

I think its a BA7 (otherwise BA9). Cursor down and its at the bottom of bayonet fitting bulbs. VWP - bulbs

Brake light - check there is feed to the switch - it should be on the ignition. the fuseboxes get dirty - I've found the only thing that works is to polish all the holder arms with a wire brush on a dremel. The fuse box may be convenient for changing fuses but the wires don't fit easily - and...

Diesel injection pumps are decent bits of engineering manufactured to high standards of precision. Dirt will wreck the thing quickly - so the utmost care must be taken when taking the thing apart.

As has been mentioned there is a flap device which is intended to protect reverse from accidental selection and make finding first easy. What happens is that as the lever is pushed beyond first it encounters the flap which provides an effective resistance - then swings out of the way allowing...

How about pushing the transfer lever right forward?

Paddocks new ones seem fine - I've had a pair of petrol ones on my S3 diesel for about 10,000 miles and all seems OK.

Would an overhaul kit for a DPA pump help? Dingocroft Fuel Pumps