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BULLETIN: POST SLEEVE 

BUSHINGS

ASSEMBLY INSTRUCTIONS

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Sawmill Post Sleeve Bushing Replacement

Summary of Contents for HM126

Page 1: ...BULLETIN POST SLEEVE BUSHINGS ASSEMBLY INSTRUCTIONS PSBR MY2020 EN Rev A Publication Date 29 Jul 2020 Sawmill Post Sleeve Bushing Replacement ...

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Page 3: ...D HM126 HM130MAX 4 _______________ REMOVE BLADE GUARD HM122 5 ____________________________ REMOVE GUIDE ARM HM122 HM126 HM130MAX 6 ___________ REMOVE GUIDE ARM HM130 7 _______________________________ REMOVE CARRIAGE HM130MAX 9 ____________________________ REMOVE OLD POST SLEEVE BUSHINGS 10 ____________________ INSTALLATION 11 _____________________________________________ ASSEMBLE UPPER POST SLEEVE...

Page 4: ... post sleeve VARIANTS There are two bushing variants depending on the sawmill carriage post dimensions Sawmill Model Model Years Bushing Compatible HM122 2019 Earlier No 2020 Newer Yes HM126 2015 Earlier No 2016 Newer Yes HM130 2019 Earlier Yes HM130MAX 2020 Newer Yes PSBR MY2020 EN Rev A Page of 2 16 29 Jul 2020 80 X 50 MM RECTANGULAR POSTS HM130 HM130MAX SAWMILLS 50 X 50 MM SQUARE POSTS HM122 HM...

Page 5: ...SASSEMBLY RAISE SAWHEAD Raise the sawhead up high enough to access the lower post sleeve bushings Do not raise it all the way to the top otherwise there will not be sufficient room to access the upper bushings PSBR MY2020 EN Rev A Page of 3 16 29 Jul 2020 ...

Page 6: ...access to the lower post sleeve bushings and hardware on sawmills with adjustable blade guides ABG part or all of the ABG will need to be removed depending on the sawmill model REMOVE BLADE GUARD HM126 HM130MAX On 2020 and newer HM126 or HM130MAX sawmills with an ABG remove the yellow blade guard by unthreading the knob in the front Then tilt the guard up and remove it from the sawmill PSBR MY2020...

Page 7: ...ove the yellow blade guard by unthreading the knob in the front Pull the guard out until the large hole at the end of the slot on the back of the guard aligns with the screw and nylon washers Tilt the guard under the blade and remove it from the sawmill PSBR MY2020 EN Rev A Page of 5 16 29 Jul 2020 Align hole in end of slot with screw ...

Page 8: ...ll Models REMOVE GUIDE ARM HM122 HM126 HM130MAX On 2020 and newer sawmills remove the arm by first disassembling the handle Then slide the arm assembly out towards the throat opening in the sawmill PSBR MY2020 EN Rev A Page of 6 16 29 Jul 2020 ...

Page 9: ...ement Most Sawmill Models REMOVE GUIDE ARM HM130 On 2019 and earlier HM130 sawmills the aluminum guide arm needs to be removed Open the band wheel housing doors and remove the blade PSBR MY2020 EN Rev A Page of 7 16 29 Jul 2020 ...

Page 10: ...Models Remove the M10 X 25 mm bolt and jam nut from the end of the guide arm and slide the guide block holder assembly out Loosen the locking handle and slide the arm out the right side of the sawmill PSBR MY2020 EN Rev A Page of 8 16 29 Jul 2020 ...

Page 11: ... the entire ABG carriage needs to be removed in order to gain access to the two front bushing bolts PSBR MY2020 EN Rev A Page of 9 16 29 Jul 2020 Remove the four 4 button head screws flat washers spacers and lock nuts located inside the band wheel housing and drop the carriage down and set it aside ...

Page 12: ...29 Jul 2020 UPPER LOWER Use vice grips to twist and snap the old bushing until it breaks then discard it Slide the locking plate down and out of the way Remove the three 3 M8 X 20 and one 1 M8 X 35 mm hex bolts from the bottom of the post sleeve Use vice grips to twist and snap the old bushing until it breaks then discard it Remove the four 4 M8 X 20 mm hex bolts from the top of the post sleeve Sl...

Page 13: ...ront side of the carriage post The bushing will fit tightly over the post Push the bushing down until it lies flat against the post sleeve Push the rear bushing over the back side of the carriage post until it fully nests with the front bushing Reinstall the locking plate and the four 4 hex bolts but only start the threads Do not tighten the bolts until instructed Note after each set of bushings a...

Page 14: ...s and push it over the front side of the carriage post The bushing will fit tightly over the post Push the bushing up until it lies flat against the post sleeve Push the rear bushing over the back side of the carriage post until it fully nests with the front bushing Reinstall the locking plate and the four 4 hex bolts but only start the threads Do not tighten the bolts until instructed Note after ...

Page 15: ...ushing The bushing fingers naturally push inwards so as they wear continuous pressure is applied to each side of the carriage post However the front rear wear pads on the bushings do not self adjust As a gap appears over time due to wear simply loosen two 2 bolts on one side and push the bushing towards the post until they are flush again The bushing holes are slotted to allow for this future adju...

Page 16: ...ay or 3 in One Silicone Spray Lubricant The bushing replacement is now complete If applicable reinstall and calibrate the adjustable blade guide assembly as shown in the next section PSBR MY2020 EN Rev A Page of 14 16 29 Jul 2020 Be sure to adjust the sawhead depth stop jam nut on both sides of the sawmill when tightening the bolts The new bushings are 5 32 in 4 mm thicker than the previous style ...

Page 17: ... cannot pivot Some components removed for clarity When the guide arm has been installed check that it slides smoothly between the V rollers If it feels too loose or too tight adjust the bottom eccentric roller using a wrench Turning it counter clockwise will tighten the arm movement turning it clockwise will loosen the movement PSBR MY2020 EN Rev A Page of 15 16 29 Jul 2020 Do not fully tighten bu...

Page 18: ...the arm Rotate the ABG carriage and guide arm until it matches the blade level so both are parallel Slide the guide arm in and out to verify that the gaps between the guide blocks and the blade are uniform Once the ABG is properly adjusted fully tighten the four 4 button head screws on the carriage PSBR MY2020 EN Rev A Page of 16 16 29 Jul 2020 ABG will rotate about this button head screw ...

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