96cherokee40
NAXJA Forum User
- Location
- Albuquerque, NM
Hey all,
I am in the process of rebuilding my AW4 and have finished installing all of the rotating assembly. Per the manual, I have applied air pressure to the feed holes to confirm piston movement/clutch engagement. All of the pistons can be heard engaging the clutch packs, but I can hear blowby during testing of the direct clutch and forward clutch. I realize the pressure is maintained via seal rings on the overdrive support (pages 63 and 94 of the AW4 manual give a decent breakdown of what I am talking about), but I imagine that those soft seals were not designed to hold back all of the pressure. The rings are new and I imagine they may grow once exposed to tranny fluid for a period of time, though I did coat them generously with petro jelly.
Is this blowby okay/expected as long as the pistons are engaging? I had to apply 90 PSI of air pressure to get the desired engagement. Does anybody even know what I am talking about?
Wes
I am in the process of rebuilding my AW4 and have finished installing all of the rotating assembly. Per the manual, I have applied air pressure to the feed holes to confirm piston movement/clutch engagement. All of the pistons can be heard engaging the clutch packs, but I can hear blowby during testing of the direct clutch and forward clutch. I realize the pressure is maintained via seal rings on the overdrive support (pages 63 and 94 of the AW4 manual give a decent breakdown of what I am talking about), but I imagine that those soft seals were not designed to hold back all of the pressure. The rings are new and I imagine they may grow once exposed to tranny fluid for a period of time, though I did coat them generously with petro jelly.
Is this blowby okay/expected as long as the pistons are engaging? I had to apply 90 PSI of air pressure to get the desired engagement. Does anybody even know what I am talking about?
Wes