Mauispyder
Proven Member
- 483
- 82
- Jan 20, 2015
-
Kula,
Hawaii
Hi all,
At the risk of
, I thought I'd add my 2cents on what I learned while replacing the shaft seals on my 1999 gst TB to make it easier.
First of all the vfaq is quite good and the vendors here and Snowboarder714 sell what you need to do it.
Three tips.
1. The dreaded throttle plate screws. I bought a manual impact driver but ended up not using it. Reason being that I picked the best fitting bit I had and it didn't fit the impact driver. It was a DeWalt impact driver bit 1 inch #1 "flex torque", the shaft was 1/4, so I hooked it up to a 3/8 ratchet with a 1/4 socket. I was impressed with how deeply this bit fit into the screw head. Then I just leaned on the ratchet and turned. Both of the peened screws came out very easy with no damage to screw or threads.
2. The dreaded twice wrapped throttle springs. After having these fly off the screwdriver I was using to wind them around for the twentieth or so time, I decided to try using a very small closed end wrench to catch the hooks on the ends of the springs and just pull them around.
3. If you decide to change out your heater hoses while you're in that area, be careful because the heater core outlets that the hoses attach to are really thin and deform easily. I gently twisted the very stuck on old hoses off wth a channel lock pliers and end up with an oval outlet. Much better to cut off the hose with something like a carpet knife. If you do deform those soft metal outlets, I found that an extended 10mm socket carefully inserted into the outlet will restore it to round. I used a slightly smaller than 10mm socket to get it started and then finished wth the 10mm.
Good luck!
And here's an interesting picture showing melted rubber from the original seals pooling on the bore of the TB and splattering in the direction of the boost.
At the risk of
, I thought I'd add my 2cents on what I learned while replacing the shaft seals on my 1999 gst TB to make it easier.First of all the vfaq is quite good and the vendors here and Snowboarder714 sell what you need to do it.
Three tips.
1. The dreaded throttle plate screws. I bought a manual impact driver but ended up not using it. Reason being that I picked the best fitting bit I had and it didn't fit the impact driver. It was a DeWalt impact driver bit 1 inch #1 "flex torque", the shaft was 1/4, so I hooked it up to a 3/8 ratchet with a 1/4 socket. I was impressed with how deeply this bit fit into the screw head. Then I just leaned on the ratchet and turned. Both of the peened screws came out very easy with no damage to screw or threads.
2. The dreaded twice wrapped throttle springs. After having these fly off the screwdriver I was using to wind them around for the twentieth or so time, I decided to try using a very small closed end wrench to catch the hooks on the ends of the springs and just pull them around.
3. If you decide to change out your heater hoses while you're in that area, be careful because the heater core outlets that the hoses attach to are really thin and deform easily. I gently twisted the very stuck on old hoses off wth a channel lock pliers and end up with an oval outlet. Much better to cut off the hose with something like a carpet knife. If you do deform those soft metal outlets, I found that an extended 10mm socket carefully inserted into the outlet will restore it to round. I used a slightly smaller than 10mm socket to get it started and then finished wth the 10mm.
Good luck!
And here's an interesting picture showing melted rubber from the original seals pooling on the bore of the TB and splattering in the direction of the boost.
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Also good tip on the heater hoses as I ovaled out mine but got it round again and cutting them off with a razor knife is a good tip. Also, freezing the seals sometimes helps them go in as it slightly shrinks them. Thanks!
