John Deere Snowblower Snowthrower Rebuild, Replace Shaft Bearings, Remove Auger, Tension Chain

This video shown how to disassemble and repair a late 80's/mid-90's John Deere 42" Snowthrower/Snowblower (single-stage models). The 42" unit shown in the video has a chain drive, but many of the parts and repairs are similar or the same for the belt drive units. Check the Pinned Comment or below for Timestamps, Part numbers, and links: 0:45 Notes about the chain versus pulley drive snowthrowers 01:11 De-tension and remove the chain 02:45 About the pulley and drive shaft 03:18 Remove the sprocket 04:37 Lock out the rotor so it can't rotate 04:58 Important detail about the eccentric locking collar and bearings set (JD8665, JD8554) 06:58 How to remove the locking collar 08:15 Remove the left hand locking collar 11:46 Remove the right hand locking collar 14:28 Remove the shear bolt (7/16") 14:49 Remove the left hand flange plates and bearing (13mm) 15:32 Remove the left hand flange plates 16:06 Remove the left hand shaft key 16:29 Remove the auger/rotor and shaft from the bucket 18:26 Remove the shaft from the auger 19:13 Tap a stuck bearing off the shaft 20:20 Inspect the auger and bucket/housing 20:58 Inspect the shaft (JD part M72099) 21:24 Info on the sprocket (AM141408) and chain (Size #40, 36 outer links plus 1 master link), and bearings, etc 24:17 Remove the scraper blade (M142882) 25:13 Remove the shoes (M135188) 26:03 Major problem - two broken housing welds! 26:41 Inspecting other parts for broken welds and other repairs 27:35 Note about the snow chute hinge and rivets (M71535 hinge, M127648 rivets) 27:56 Straightening the auger fins 29:59 Inside the old bearing (cut open) and failure speculation 32:07 Repair of broken welds (TIG welded) 32:49 Disassemble the rest of the housing 34:20 New drilled holes in the auger for the "flapper modification" 34:58 Paint the aguer, housing and other peices Re-assembly: 40:20 Install the new wear plate (M142891), scraper blade (M142882), and shoes (M135188) 41:17 Re-assemble the snowthrower housing and drive assembly to the frame 47:47 Install the snowthrower to the tractor 52:02 Install auger to the housing with hand install of right side locking collar and bearing 56:13 Measure the shaft protrusion for clearance 56:53 Install shear bolt (19H1914 bolt, M40333 nut) 57:31 Note about the shaft keys (M45460, or 1/4" keystock) 59:09 Install the left side shaft key 59:50 Install the left side flange plates and bearing 1:00:29 Important install note for the left side locking collar 1:01:28 Check chain case cover clearance and lock out the rotor before tightening the collars 1:01:48 Tighten the right side locking collar 1:03:25 Install the left side locking collar 1:04:19 Tighten the flange plate bolts (13mm) 1:04:54 Install the new "flapper modification" 1:07:19 Re-install the auger deflector shield 1:07:44 Back-track: my pulley is not correctly spaced on the driveshaft 1:11:28 Re-install the pulley and driveshaft 1:13:05 Chain inspection - why I had to replace my chain 1:16:10 Re-install the sprocket and chain 1:18:42 Align the sprocket and tension the chain 1:25:56 Verify there's no chain rub 1:26:16 Tighten the jam nuts and 10mm's for the driveshaft bracket 1:26:31 Secure the sprocket set screw to final tightness 1:27:18 Re-install the chain case cover 1:29:13 Level the bucket/housing 1:30:35 Adjust the scraper bar clearance using the shoes 1:31:04 Reassemble the snow chute 1:32:05 Re-install the snow chute 1:34:28 Adjust the belt tension Link to the Owner's Manual - Chain Drive: Click this link, select "Part #/Keyword" in the drop down, then enter OMM123354. Or, you can search for "42 Snowthrower". You can then download the full pdf for free: https://techpubs.deere.com/en-US/Sear... Link to the Owner's Manual - Belt Drive: https://issuu.com/razvanalexa/docs/jo... 42_snow_thrower_manual Other links: https://partscatalog.deere.com/jdrc- services/v1/image/getAttachment/42_Inch_Snow _Thrower__240_245_260_265_285_320_325_335 _345_355D_GX_LX_GT_Tractors___Introduction? a=261&br=1061&locale=en-US I hope this video was helpful for you. Thank you for watching, and good luck with your repair!