Had a question today on the 22R water pump video asking if you need to put sealer on the one large bolt that passes through the water pump and timing cover on the 22R series engines. There isn't a bolt that I know of on there that requires sealer other than the top most bolt of the oil pump. I'll attach pics from the factory service manual. The reason that the timing cover bolt that passes through the water pump, timing cover, and into the block doesn't need sealer is because it's being run into a blind hole in the block and has the timing cover gasket and the water pump gasket protecting the bolt hole from oil and coolant exposure. Toyota is pretty good about calling out special procedures when needed in their factory service manuals (FSM). See the two attached pictures for the water pump assembly and oil pump assembly instructions. The FSM for the water pump is pretty straight forward, but for the oil pump they make a note in the exploded diagram and then really call out the need for sealant in the actual assembly instructions.
WheeliePete
Had a question today on the 22R water pump video asking if you need to put sealer on the one large bolt that passes through the water pump and timing cover on the 22R series engines. There isn't a bolt that I know of on there that requires sealer other than the top most bolt of the oil pump. I'll attach pics from the factory service manual. The reason that the timing cover bolt that passes through the water pump, timing cover, and into the block doesn't need sealer is because it's being run into a blind hole in the block and has the timing cover gasket and the water pump gasket protecting the bolt hole from oil and coolant exposure. Toyota is pretty good about calling out special procedures when needed in their factory service manuals (FSM). See the two attached pictures for the water pump assembly and oil pump assembly instructions. The FSM for the water pump is pretty straight forward, but for the oil pump they make a note in the exploded diagram and then really call out the need for sealant in the actual assembly instructions.
2 years ago (edited) | [YT] | 9