Take note of how high your forks stick up above the top triple clamp. When reassembling, make sure you put them back in the same spot, and make sure they are exactly the same on both sides. The TW is a bit more forgiving than most modern day bikes when it comes to the triple clamp bolts.
Here is the method I use when I don't have a torque wrench.
Use a ratchet and place the palm of your hand on top of the forward/reverse switch at the head of the ratchet. In other words, wrap your fingers around the end of the ratchet. Tighten the bolt about as tight as you can get it without hurting your hand. Then grab the end of the ratchet like normal and turn the bolt just enough to barely move it.
On the bottom triple clamp, there are two bolts, so once you tighten the second one, you'll need to recheck the first one. Just go back and forth until you know they're both tighened properly. After a while, you'll get the hang of it.
If in doubt, you can usually borrow a torque wrench at the auto parts store for a deposit, which they will refund when you bring the tool back. If you go that route, make sure the wrench you get has 17 ft lbs in the middle of it's range, as that's the spec for the triple clamps.