front and rear seal replacement project - snotrac

This is why you own a snotrac. less than 2 hrs I was able to pull the motor by myself. Nice being able to stand in the engine compartment. Now I have to figure out how to replace the seals.

which seals are you replacing. also while the engine is out check the end play on the crank should be 4 to 8 thousandths if it's getting loose remove the fly wheel and remove one of the thinner shims

Snowtrac Nome said:

which seals are you replacing. also while the engine is out check the end play on the crank should be 4 to 8 thousandths if it's getting loose remove the fly wheel and remove one of the thinner shims

Click to expand...

Don, replacing the two rear seals. attached is a picture of the shoulder on the flywheel. Definitely is pitted. Also, uploaded the play in the crank video to youtube. Does not seem excessive. Seems like there is only one shim. Possibly the other shims are pressed in an need to be worked out? Everything I have read says you need at least 3? Old seals looked ok, no obvious sign of damage. O' ring on the fly wheel was worn down.

https://www.youtube.com/watch?v=T-AJu7wBjXg

Snowtrac Nome said:

which seals are you replacing. also while the engine is out check the end play on the crank should be 4 to 8 thousandths if it's getting loose remove the fly wheel and remove one of the thinner shims

Click to expand...

Don, replacing the two rear seals. attached is a picture of the shoulder on the flywheel. Definitely is pitted. Also, uploaded the play in the crank video to youtube. Does not seem excessive. Seems like there is only one shim. Possibly the other shims are pressed in an need to be worked out? Everything I have read says you need at least 3? Old seals looked ok, no obvious sign of damage. O' ring on the fly wheel was worn down.

https://www.youtube.com/watch?v=T-AJu7wBjXg

first your end play needs to be checked with the flywheel but while it is off I would watch the rear main bering for any movement while sliding the crank in and out indicating a worn case. reinstall your fly wheel than check end play as for the fly wheel your seal surface needs to be sleeved, don't replace the fly wheel or you will have to re shim and set end play again you should only have 1 rear main seal I don't know why you had 2.

other seal is on the flywheel. O' ring.