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| | | | Joined: Apr 2010 Posts: 126 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2010 Posts: 126 | i did a search and couldnt find anything on this. i have a 66 C-30, and this is the first pre-73 truck i have owned. i keep hearing a whirring sound when im going in reverse when i let off the clutch. just wondering if this is normal or a sign of things to come. also i cant figure out how to check/fill the tranny fluid. any help would be greatly appreciated! thanks guys.
66' Chevy C-30 Rat
| | | | | Joined: Apr 2005 Posts: 2,097 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,097 | More than likely it is the clutch release bearing also known as the throw-out bearing. You should be hearing it to some degree in all gears. It is likely worn out. You should probably replace the clutch also since you have to remove the transmission to get to it. All 3 speed and 4 speed transmissions have a fill plug on the right side of the trans case.
Fred
Last edited by rfs56trk; 04/17/2010 9:42 PM.
1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine
| | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | These old trans. did naturally make a little noise in reverse. It will have some whine in all the gears except high but if its too much it could have a brg. in the trans that is scored. There is a pipe plug on the side of the trans. You fill it to the lvel of the plug. There is a plug on the bottom to drain it which is a good idea. Sometimes the old grease has been in there for many years.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Apr 2010 Posts: 126 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2010 Posts: 126 | thanks alot guys! im planning to replace the clutch in a couple weeks because its really a fight to get it pushed in. i havent noticed that noise in any other gear, but ill start paying more attention!
66' Chevy C-30 Rat
| | | | | Joined: Feb 2004 Posts: 29,748 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,748 | Reverse has straight-cut gears which naturally make more noise than the forward gears, which are cut on an angle, and share the load of pulling between three teeth, not one at a time. If the noise happens just as you're letting the pedal out to engage the clutch, the throwout bearing is at least part of the problem.
Jerry
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| | | | | Joined: Apr 2010 Posts: 126 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2010 Posts: 126 | nope; its only in reverse. . . .and it sounds horrid. definitely going to have to do something.
66' Chevy C-30 Rat
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