Popular Post Nathanwhit1 Posted Thursday at 06:39 PM Popular Post Share Posted Thursday at 06:39 PM Evening all I’ve started on the clutch swap today. It’s all on bolted and ready for lifting out in the morning. I’ve managed to source an new old stock clutch over here in the uk so I’m off too fetch that tomorrow afternoon and hopefully have her back up and running over the weekend 4 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75366-clutch-swap/ Share on other sites More sharing options...
Joey Mack Posted Thursday at 07:01 PM Share Posted Thursday at 07:01 PM Awesome !! Quote Link to comment https://www.bigmacktrucks.com/topic/75366-clutch-swap/#findComment-572735 Share on other sites More sharing options...
Nathanwhit1 Posted Thursday at 07:29 PM Author Share Posted Thursday at 07:29 PM On 4/3/2025 at 7:01 PM, Joey Mack said: Awesome !! Expand Getting there slowly Quote Link to comment https://www.bigmacktrucks.com/topic/75366-clutch-swap/#findComment-572746 Share on other sites More sharing options...
Nathanwhit1 Posted Friday at 10:59 AM Author Share Posted Friday at 10:59 AM On 4/3/2025 at 7:01 PM, Joey Mack said: Expand 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75366-clutch-swap/#findComment-572795 Share on other sites More sharing options...
Joey Mack Posted Friday at 11:18 AM Share Posted Friday at 11:18 AM You did well sir, looks like the clutch springs were grinding the flywheel. Good luck to you.. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75366-clutch-swap/#findComment-572797 Share on other sites More sharing options...
Popular Post Geoff Weeks Posted Friday at 12:09 PM Popular Post Share Posted Friday at 12:09 PM That, right there is why I hate "puck" clutches, everything is tore up. heat checks, and material lost from the flywheel. Hard to tell from the pictures whether the flywheel can be brought back or not. If it can, it will be thinner and less able to take the heat from the next clutch. 3 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75366-clutch-swap/#findComment-572801 Share on other sites More sharing options...
Popular Post Joseph Cummings Posted Friday at 12:39 PM Popular Post Share Posted Friday at 12:39 PM On 4/4/2025 at 12:09 PM, Geoff Weeks said: That, right there is why I hate "puck" clutches, everything is tore up. heat checks, and material lost from the flywheel. Hard to tell from the pictures whether the flywheel can be brought back or not. If it can, it will be thinner and less able to take the heat from the next clutch. Expand With a truck that is geared right, and a good driver, there really is no need for those. I've had trucks that have gone years in city service with organic lining and never even need an adjustment. New driver and within a month I'm turning the ring in a couple of notches. Not sure how they are using up so much clutch lining with a truck that has the gearing to walk away at idle grossing 120,000 or more 3 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75366-clutch-swap/#findComment-572806 Share on other sites More sharing options...
Nathanwhit1 Posted Friday at 12:55 PM Author Share Posted Friday at 12:55 PM It came out easier a lot easier than I thought. The flywheel is saveable and is been done as I we speak. Do any of u know the torque settings for the flywheel bolts and the clutch pressure plate please Quote Link to comment https://www.bigmacktrucks.com/topic/75366-clutch-swap/#findComment-572813 Share on other sites More sharing options...
Joey Mack Posted Friday at 01:04 PM Share Posted Friday at 01:04 PM Flywheel bolts are around 175 lbft. I can check my book when i get home later 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75366-clutch-swap/#findComment-572817 Share on other sites More sharing options...
Popular Post fjh Posted Friday at 01:40 PM Popular Post Share Posted Friday at 01:40 PM On 4/4/2025 at 12:55 PM, Nathanwhit1 said: It came out easier a lot easier than I thought. The flywheel is saveable and is been done as I we speak. Do any of u know the torque settings for the flywheel bolts and the clutch pressure plate please Expand Note they must take off the same amount from the mounting flange as they take off of the surface To have the clutch operate properly! thread locker on the bolts 180 ftp pressure plate not sure 15-20 maybe ! 3/8 ratchet tight! 2 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75366-clutch-swap/#findComment-572818 Share on other sites More sharing options...
Geoff Weeks Posted Friday at 01:58 PM Share Posted Friday at 01:58 PM I pulled 170K through a 14" organic coupled to a engine that was was over 425hp and 1400 lb/ft torque. Never wore out an organic clutch, the closest I came was when the pressure plate failed, spilling all its fingers and springs into the bell housing. Quote Link to comment https://www.bigmacktrucks.com/topic/75366-clutch-swap/#findComment-572823 Share on other sites More sharing options...
Nathanwhit1 Posted Friday at 04:02 PM Author Share Posted Friday at 04:02 PM Not a spicer but will do the job Quote Link to comment https://www.bigmacktrucks.com/topic/75366-clutch-swap/#findComment-572830 Share on other sites More sharing options...
Geoff Weeks Posted Friday at 04:16 PM Share Posted Friday at 04:16 PM Not sure it will, the Spicer and truck linkage is set up for an internal clutch adjustment. That mean the linkage doesn't change when the clutch is adjusted. That stamped steel cover, I see no internal adjustment, and may be designed for a clutch set up where the linkage gets adjusted. On those the clutch brake (if used) has to have a separate way to keep the clutch brake in adjustment. Without adjustment internally the throw-out bearing keeps moving as the clutch wears. I could be wrong, but have always replaced cast cover with cast cover. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75366-clutch-swap/#findComment-572832 Share on other sites More sharing options...
Nathanwhit1 Posted Friday at 04:18 PM Author Share Posted Friday at 04:18 PM On 4/4/2025 at 4:16 PM, Geoff Weeks said: Not sure it will, the Spicer and truck linkage is set up for an internal clutch adjustment. That mean the linkage doesn't change when the clutch is adjusted. That stamped steel cover, I see no internal adjustment, and may be designed for a clutch set up where the linkage gets adjusted. On those the clutch brake (if used) has to have a separate way to keep the clutch brake in adjustment. Without adjustment internally the throw-out bearing keeps moving as the clutch wears. I could be wrong, but have always replaced cast cover with cast cover. Expand There’s a castle nut you adjust behind the bearing for the internal adjust of the clutch bud 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75366-clutch-swap/#findComment-572834 Share on other sites More sharing options...
Geoff Weeks Posted Friday at 04:22 PM Share Posted Friday at 04:22 PM Ok, then I was wrong. We don't use a lot of stamped steel covers here. Thanks for the info! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75366-clutch-swap/#findComment-572836 Share on other sites More sharing options...
Popular Post Nathanwhit1 Posted Friday at 04:22 PM Author Popular Post Share Posted Friday at 04:22 PM On 4/4/2025 at 4:22 PM, Geoff Weeks said: Ok, then I was wrong. We don't use a lot of stamped steel covers here. Thanks for the info! Expand Hope this pic makes sense buddy 2 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75366-clutch-swap/#findComment-572837 Share on other sites More sharing options...
fjh Posted Friday at 04:41 PM Share Posted Friday at 04:41 PM Yup it’s known as a lipe clutch here should work 2 Quote Link to comment https://www.bigmacktrucks.com/topic/75366-clutch-swap/#findComment-572839 Share on other sites More sharing options...
Geoff Weeks Posted Friday at 04:48 PM Share Posted Friday at 04:48 PM (edited) Yeah, I know about Lipe, but there are also other stamp steel covers that don't have an adjustment internally. I just want to make sure before he got it together. Not as common as the cast cover clutches. I admit to being wrong, but better to make sure before it is all buttoned up. Glad to see him go back with organic disks. Edited Friday at 04:49 PM by Geoff Weeks 2 Quote Link to comment https://www.bigmacktrucks.com/topic/75366-clutch-swap/#findComment-572840 Share on other sites More sharing options...
Joey Mack Posted Friday at 05:19 PM Share Posted Friday at 05:19 PM Ive seen those in Iveco trucks. I think Valeo was the brand name. I have only seen a few, and i do not have the spanner wrench in my tool box, which means I didnt see a lot of them.. 😉 Quote Link to comment https://www.bigmacktrucks.com/topic/75366-clutch-swap/#findComment-572841 Share on other sites More sharing options...
Nathanwhit1 Posted Friday at 06:06 PM Author Share Posted Friday at 06:06 PM I appreciate all the help and advice that people have given me on here 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75366-clutch-swap/#findComment-572846 Share on other sites More sharing options...
Popular Post fjh Posted Friday at 07:46 PM Popular Post Share Posted Friday at 07:46 PM A long screw driver and a hammer works my advice free up those nut’s before you install it! 1 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75366-clutch-swap/#findComment-572853 Share on other sites More sharing options...
Nathanwhit1 Posted Friday at 08:54 PM Author Share Posted Friday at 08:54 PM On 4/4/2025 at 7:46 PM, fjh said: A long screw driver and a hammer works my advice free up those nut’s before you install it! Expand I’m been all professional and bought the proper tool 🤣🤣🤣🤣🤣 but I can see me using hammer and screwdriver 🤣🤣 Quote Link to comment https://www.bigmacktrucks.com/topic/75366-clutch-swap/#findComment-572855 Share on other sites More sharing options...
Nathanwhit1 Posted Friday at 08:57 PM Author Share Posted Friday at 08:57 PM 2 Quote Link to comment https://www.bigmacktrucks.com/topic/75366-clutch-swap/#findComment-572857 Share on other sites More sharing options...
Joey Mack Posted Friday at 09:02 PM Share Posted Friday at 09:02 PM Respect !! Quote Link to comment https://www.bigmacktrucks.com/topic/75366-clutch-swap/#findComment-572858 Share on other sites More sharing options...
Nathanwhit1 Posted Friday at 09:19 PM Author Share Posted Friday at 09:19 PM On 4/4/2025 at 9:02 PM, Joey Mack said: Respect !! Expand If it’s not running by Sunday tea time I’m buying a gallon of petrol and a box of matches 🤣🤣🤣 2 Quote Link to comment https://www.bigmacktrucks.com/topic/75366-clutch-swap/#findComment-572859 Share on other sites More sharing options...
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