My water pump died. I replaced it. i did not take enough pictures. Cam timing belt has to come off to get the pump out, so I replaced it and the cam tensioner too. Pics of pump part # and belt that drives it. Aftermarket timing belt # too.
I used a printed book that does not cover the EFGS motor, as well as online info that also did not related to the EFGS. I put the gearbox in 5th with E brake on and did not worry about finding TDC, etc for the cam belt. I marked the cam gear sprocket before removing timing belt. The camshaft jumped maybe 3 teeth when the belt came off but I just used a wrench on the sprocket bolt to turn the cam back 3 teeth when fitting the new belt. Two electrical connectors must be disconnected before timing belt cover: water temp sensor and cam position sensor (think that's what it is). Those are on 1 wire harness and have 2 plastic clips to hold the wires in place. Need to release them too. Alternator has a simple plug in the back and the main output wire on top. I took the whole thing out to make it easier to see. One big item I did not have to do: I did not remove the E brake and section of "floor" between the seats. I had plenty of access with the truck up on ramps and jack stands, the rear hatch removed and the 2 seats up. The timing belt and sprocket cover is is supposed to be sealed with some rubber bits that I re-used (2 are small and easy to lose/miss) and a foam rubber strip with adhesive on one side laid around the perimeter. I used thin butyl caulk instead of foam rubber. I did not buy a new alternator belt or a new AC belt, but I have ordered them and will swap them in them later on. Pic of AC belt.
I’m about to change out my timing belt. I bought a timing belt kit on eBay that came with cam seal, crank seal, water pump with gasket, tensioner and timing belt. I was surprised that it didn’t come with a timing cover gasket set. Seems to be the norm for most of the kits I guess. I had someone find a timing gasket directly from Daihatsu for about $20. Also my timing cover has a gouge in it from where the alternator belt rubbed against it. Doesn’t appear to have gone completely through thankfully. I asked about getting a new one however they are discontinued. I will figure out a way to patch that up. As for the gasket I think I will try the way you did it and reuse the rubber bits and butyl caulk the foam rubber area.
The timing belt tensioner was not spring loaded or anything. I just took a guess as to how tight to make it.