just found this thread great info. i am a mechanic for a fleet of about 75 hino 338 single axle dumptrucks just out of warranty varying from 2008-2014. i am new to hino used to mack and intl have several with leaking camshaft housing gaskets my boss gave them to me to fix. following the tech manual it says set #1 at TDC but 1 and 6 both are at tdc the "book" says check the flywheel for an indicator to determine which is compression or exhaust, but no location for it any help is appreciated
thanks in advance kevin
Hey there,
The camshaft housings do sometimes leak a little, but it's much more common that the head gaskets leak on the right rear side, in the corner where the idler gear is kept. Something to look at.
If you have to take a cam housing off, be aware that the cam bearing cap bolts have two different torques. Be sure to back all of the rocker arm adjusters all the way back because the hold down bolts sometimes strip the threads out of the rocker box.
The book is straight up retarded. First, there may be marks on the balancer that are easier to use. Use these instead of on the flywheel. There's a cover with two bolts on the flywheel housing, driver's side, kind of behind the compressor. It's halfway under the cab, and nearly impossible to see.
Turn the engine to 1/6 mark. Take the plug out of the injection pump and try to thread a valve cover bolt into it. It should go all the way in. If it doesn't, spin the engine 180*. If it still doesn't, the injection pump is out of time. It will run fine out of time, there just may be some slight vibration from something something dynamic vibration something from the air compressor. Doesn't really matter. If this is the case, ignore the pump and put the timing mark on 1/6. Doesn't matter if it's 180 out. For the love of all that is holy, remember to take the bolt out of the injection pump before you try to spin the engine.
Looking from the front of the engine to the rear, You'll see two marks on one side of the cam gear and one mark on the other. Put the two marks on the left, with the bottom mark level with the cam housing surface. This should make the opposing mark level too. Back on the left side, the upper mark will be above the surface. In other words, the left upper timing mark will be visible, and the other two level with the cam housing surface. That's it. Install cam, rockers, injectors. Be extremely careful installing the fuel return tube. Do NOT reuse it. No kinks or bending are permitted at all! Don't reuse the banjo bolt with the '+' mark on it, it's a one torque deal. If you have to take it off, throw it away and get another. Don't reuse the washer seals.The '+' has a different, slightly thicker washer seal than the rest. The '+' bolt also has a different thread pitch than the rest, so don't get them mixed up. The torque on these banjo bolts is 110-115 inch pounds. Ignore the 9 lb/ft spec in the book, do not use a lb/ft torque wrench. Use an lb/in torque wrench. Have someone double check your work. If this line leaks, the engine will kick a connecting rod out of the block. If this is done correctly, it will never fail.
) or a reflection on the Hino. 
The sender is located at the end of the screwdriver in the first photo, close up in in the second. Also need info on how to remove the connectors so we can re-crimp them to the wires.