| Author | Message | ||
| Sam Summers (Greyghost)
Registered Member Username: Greyghost Post Number: 33 Registered: 4-2011 Posted From: 72.35.193.222  Rating: N/A |
Ok Wise Men, the shop manual for the 1967 8/71 says to use Dextron Transmission fluid for the power steering. Is this still holding true today or is there a upgrade to use? Sam | ||
| Dal Farnworth (Dallas)
Registered Member Username: Dallas Post Number: 590 Registered: 7-2004 Posted From: 75.91.197.132  Rating: N/A |
No such animal as Dextron... Dexron is what you are looking for, and I would go with what's already in the system. Some use 40w, some use Dexron, and I've seen some put hydraulic oil in the system. If you change what's in there, make certain you flush it well, or you'll have a bunch of problems. Dexron Dexron II Dexron III Dexron IV are not really interchangeable, if I 'member right. Good Luck! | ||
| Bob MacIsaac (Wildbob24)
Registered Member Username: Wildbob24 Post Number: 131 Registered: 5-2007 Posted From: 184.36.50.30  Rating: N/A |
Sam, If your bus still has the original "booster cylinder" type power steering, you would use the Dexron ATF. If it's been converted to the Shepard integral power steering, you would use motor oil. Bob | ||
| Sam Summers (Greyghost)
Registered Member Username: Greyghost Post Number: 35 Registered: 4-2011 Posted From: 72.35.193.222 Rating: N/A |
Ok Grammer Nazi, my finger hit a T which it wasn't suppose to. Bob it is the original booster cylinder, so Dexron (without the T)ATF will be it. Thank you both! Sam | ||
| Dal Farnworth (Dallas)
Registered Member Username: Dallas Post Number: 591 Registered: 7-2004 Posted From: 75.91.197.132 Rating: N/A |
Hee Hee Hee Heee... Sorry Sam, I couldn't help myself. (Yeah I could, but I didn't cause I was bored!)LOL | ||
| Sam Summers (Greyghost)
Registered Member Username: Greyghost Post Number: 36 Registered: 4-2011 Posted From: 72.35.193.222 Rating: N/A |
Your lucky that I didn't say something about stainless steel water tanks verses plastic, but I fiqured you already had a chunk takin out of you from that one! | ||
| Dal Farnworth (Dallas)
Registered Member Username: Dallas Post Number: 592 Registered: 7-2004 Posted From: 75.91.197.132 Rating: N/A |
I was gonna mention that she should use an old aluminum saddle tank from an over the road truck! | ||
| Gus Causbie (Gusc)
Registered Member Username: Gusc Post Number: 1332 Registered: 11-2005 Posted From: 173.202.27.190  Rating: N/A |
Bob, Where did you find out to use motor oil in Sheppard PS? I was told by the PO to use Dexron in mine? Thanks. | ||
| Bob MacIsaac (Wildbob24)
Registered Member Username: Wildbob24 Post Number: 133 Registered: 5-2007 Posted From: 184.36.50.30 Rating: N/A |
Gus, I was initially told this by my local Atlanta bus guru, Ray Cox. It is confirmed by the 4905 maintenance manual in 2 different places: Section 13, page 3 and Section 16, page 32 The manual is pretty explicit in both places about not using Dexron in the Shepard system, putting the warning in bold type. I can scan those pages and send them to you if you'll give me your email address. Bob | ||
| Gus Causbie (Gusc)
Registered Member Username: Gusc Post Number: 1333 Registered: 11-2005 Posted From: 173.202.4.210 Rating: N/A |
Bob, Thanks, I went to the Sheppard website and they did, indeed confirm what you said. The reply is quoted below; "We like 15W40 the best for our gears. The only real concern is if you operate in very cold climates. It can damage the pump on start-up or hydraulic fan drives if it gets too cold. The noise is the fluid cavitating as it passes through the valve porting. Eliminate any sharp bends in the hoses or 90 degree fittings if possible. The motor oil should also run quieter. Regards, Roy" The bit in the second paragraph is because I also asked them about the noise in my system. Thanks for the heads up. |