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FYI the two screws that hold the L and R t/s switch housings together (and clamp it to the steering column) are a different size on the aftermarket t/s switches I've seen, compared to the original German units. It's usually the slots inside the housing (which is made of pot metal) that hold the...

There's wiring diagrams for both early and late bus wiper motors & switches to be found at the following forum thread: https://www.thesamba.com/vw/forum/viewtopic.php?p=8956954#8956954 According to that, one of my remarks about the accuracy of the diagram posted in the first post of this thread...

The pushrod used is determined by the pump used, whether there's a generator or alternator fitted has nothing to do with it. Using the incorrect pushrod will either result in no pumping action at all or else severe mechanical destruction of parts. One sometimes uses a differently-constructed...

In the schematic above, the middle contact at D being connected to term 53 would imply that the cam mechanism causes it to alternately contact the term 53a wire and the 31b wire, but I think it should rather be the 53a contact in the middle. Also, the legend for terminal 31b says "Switched...

Well on second look, the schematic above may be a bit misleading, and perhaps connecting to term 53 may be OK, if you would prefer having the motor run at its lower speed. I would at any rate disconnect and insulate the wire ends on the switch not being used.

No, if you do that the parking mechanism will short out term 53 (and therefore live 30) to ground through the wire connected to term 31b, and blow the fuse if not worse. Heat up terminal 53b instead, which I think is the hi-speed terminal. Wiper motor should run as long as 30 and 53b are...

The "silver dot" is where the original hole in the plate has been soldered up, and goes towards the front. The hollowed-out spots on the plate are on top, and they should line up with two series of tiny holes drilled in the wall of the carb passage.

It's normal, because the steering column is part of the horn circuit, and it is normally "hot". The ignition housing (and your inserted keys) is grounded, so when the keys contact the column, it grounds the horn circuit and allows current to flow, sounding the horn.

No plastic cover, the works screws as-is into the metal housing. It's the metal ring with a tab attached to the bottom of the steering wheel that does the canceling. Your headlight dimmer wires look like they're about ready to fall off.

Fuel pump has spacer, called "Intermediate Flange", VW part # 021-127-303A.

No, all VW bay bus brake systems have the pressure regulator. The design changed slightly in '72 or '73, VW saying that the late regulator can be installed in the earlier busses with a slight modification to the long rear brake hard line. I also have 73-79 bus rear brake components in my '71...

Below is the US-version wiring. Your Hazard Switch should have nothing connected to its terminals #54 and #54f. The red wire on terminal #30 should connect to a fuse that is always hot. The black/purple wire from the turn signal switch assembly should be taped off and not connected.

I've had mine, vertical, in the spot you mention, for the last 18 years or so. Not so much as a scratch from road hazards. But then I stay on civilized roads, and avoid the buffalo trails. I don't even like to think of the freakin' mess a horizontal filter would make. And how would you pre-fill it?

On the 71-up busses, the buzzer is a little relay box on the connection bar behind/under the fuse box - not sure about the '70 setup. The buzzer sounds with the key inserted only (the key does not have to be turned to the running position) and the driver-side door open. It's powered from...

When the drum is installed on the spindle, the grease seal lip rides on the spacer ring which is pressed on the spindle inboard of the inner bearing, so yes there is a gap between the two, and the bearing is "loose" inside the drum when not installed. The Bentley service manual has a...

I also have a new ATE booster unit intended for my '71 U.S.-spec bus. I haven't yet tried to fit it on the bus, but I noticed that the pushrod inside the booster (the part that slips inside the master cylinder front piston) extends too far into the M/C. It thus compresses the M/C pistons and...

The hose from the fan shroud goes to the rear connection on the charcoal canister. The (bigger) hose from the front of the canister goes to the side of the lower part of the air cleaner. The hose from the oil filler/crankcase vent goes to the connection on the lower side of the air cleaner horn...

Those clips were not used on bay bus brakes.

"Made October 71" would make it a '72 model, by VW's reckoning. The only rear brake components that were unchanged 71-79 were the return springs. FYI: http://www.thesamba.com/vw/forum/viewtopic.php?t=595632&highlight=id" onclick="window.open(this.href);return false;

My gearbox has been whining and growling for the last 60,000 miles. Such noises are not neccessarily symptoms of imminent failure. A worn mainshaft bearing seat and thrust surface at the nosecone is a very common source of gearbox noise. It's fairly easily fixable with a reconditioned nosecone...