Wood-mizer 1996 LT25 Safety, Setup, Operation & Maintenance Manual Download Page 57

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Maintenance

Blade Tensioner

Maintenance

2596doc091809

3-7

3.7

Blade Tensioner

Lubricate the chrome rods of the tensioner system with a heavy duty teflon spray lubri-
cant, such as Gunk L508, every fifty hours of operation.

Lubricate the tensioner screw handle with a NLGI No. 2 grade lithium grease as needed.

See Figure 3-4.

FIG. 3-4

SM0058B

Chrome rods

Tensioner

screw handle

grease fitting

Summary of Contents for 1996 LT25

Page 1: ...Setup Operation Maintenance Manual 1996 LT25 rev B7 00 C1 01 Safety is our 1 concern Read and understand all safety information and instructions before operating setting up or maintaining this machin...

Page 2: ...he continental U S call our toll free Parts hotline at 1 800 525 8100 Please have the vehicle identification number and your customer number ready when you call Wood Mizer will accept these methods of...

Page 3: ...ule you for a service call Office Hours All times are Eastern Standard Time Please remember that Indiana does not go on Day light Savings Time in the summer Monday Friday 8 a m to 5 p m Saturday 8 a m...

Page 4: ...indicates the model is approved for sale in countries that have adopted German Gerpr fte Sicherheit G S safety standards The model number is located on the middle blade housing cover See the figure at...

Page 5: ...2596doc091809 v NOTE Sawmills manufactured before January 1997 do not have the repeated revision level or the minor revision level V I N DESCRIPTION MODEL NUMBER DESCRIPTION...

Page 6: ......

Page 7: ...OPERATION 2 1 2 1 Stationary Sawmill Setup 2 1 2 2 Portable Sawmill Setup 2 3 2 3 Replacing The Blade 2 7 2 4 Tensioning The Blade 2 8 2 5 Tracking The Blade 2 9 2 6 Starting The Engine 2 11 2 7 Load...

Page 8: ...4 3 SECTION 5 SAWMILL ALIGNMENT 5 1 5 1 Pre Alignment Procedures 5 1 5 2 Frame Setup 5 2 5 3 Blade Installation And Alignment 5 3 5 4 Saw Head Slide Pad Adjustment 5 5 5 5 Adjusting The Lower Track Ro...

Page 9: ...irreversible personal injury The word WARNING suggests a safety hazard that can cause personal injury CAUTION refers to hazards that can cause damage to the equipment or property only Read all safety...

Page 10: ...efore unhitching it from the towing vehicle Failure to do so may result in serious injury or death WARNING Always make sure the trailer is supporting the sawmill frame when operating a sawmill with ad...

Page 11: ...ral position before turning the key switch to the ON or ACC position This prevents unwanted carriage movement DANGER Check to be sure the saw head is resting firmly on the rest pin and mast rail stops...

Page 12: ...olts can cause saw head dam age especially during mill transportation CAUTION Do not use the blade guide arm knob to move the carriage head forward and backward Damage to the blade guide arm may resul...

Page 13: ...Belt sizes for the LT25 are shown Description Belt Size Wood Mizer Part Engine Drive Belt Rev B7 B8 BX68 P12139 Engine Drive Belt Rev B9 BX73 014585 Engine Drive Belt Rev C1 BX72 P09555 Blade Pulley...

Page 14: ...nd tooth set specifications Gas Diesel Engine Size Recommended Blade For Sawing Softwood Hardwood Frozen or Hard to Cut Wood 5 hp 14hp 042 x 7 8 x 1 1 4 035 x 7 8 x 1 1 4 045 x 7 8 x 1 1 4 F 1 1 TRU S...

Page 15: ...ance capacity of the LT25 and LT25L sawmills is listed below Peak cutting rates are measured in 12 30 cm wide red oak and represent the capability of the sawmill only Rates based on using Tru Sharp 1...

Page 16: ...General Information Engine Motor Specifications 1 1 8 2596doc091809 Safety General Information 1 7 Engine Motor Specifications The standard engine is an 11HP Briggs and Stratton model number 256422 ty...

Page 17: ...dimensions of the LT25 and LT25L sawmills are listed below Model Length Width Height Weight LT25 19 11 5 3 m 6 2 1 2 1 9 m 7 6 2 3 m 1600 lbs 726 Kg LT25 w Trailer 21 9 6 6 m 6 5 2 0 m 7 6 2 3 m 1947...

Page 18: ...Safety General Information Components 1 1 10 2596doc091809 Safety General Information 1 9 Components See Figure 1 1 The major components of the Wood Mizer LT25 and LT25L are shown below FIG 1 1...

Page 19: ......

Page 20: ...Safety General Information Components 1 1 12 2596doc091809 Safety General Information...

Page 21: ...ON 2 1 Stationary Sawmill Setup See Figure 2 1 Set up the mill on firm footing Level by eye Fasten the mill to the floor to prevent any creep after prolonged use NOTE Make sure the unit is level befor...

Page 22: ...ok the carriage safety chain located at the bottom of the vertical mast 2 Use the up down crankswitch on the control panel to raise the cutting head from the car riage rest pin Swing the rest pin down...

Page 23: ...sult in serious injury or death WARNING Always make sure the trailer is supporting the sawmill frame when operating a sawmill with adjustable outriggers Failure to do so may result in serious injury o...

Page 24: ...before moving cutting head from the rest position Failure to do so may result in serious injury For Fine Adjust Outriggers FAOs lower the outrigger as close to the ground as possible then secure in pl...

Page 25: ...gers to raise or lower each end of the sawmill Adjust all outriggers evenly to avoid twisting the mill frame by jacking one outrigger higher than the others For FAO s fine tune the outrigger base heig...

Page 26: ...ifting them out of the slots CAUTION To prevent fender damage remove fenders before operating sawmill or loading logs 8 Raise the two side supports that will prevent a log from falling off the side of...

Page 27: ...l the wheel is pulled in and the blade is lying loose in the blade housing Lift the blade out of the blade housing When installing a blade make sure the teeth are pointing the correct direction The te...

Page 28: ...trol or while cutting Ambient temperature changes will cause tension to change Adjust the ten sion handle as necessary to maintain the recommended tension level CAUTION The blade tension should be rel...

Page 29: ...mm out from the edge of the blade wheel 1 32 75 mm To adjust where the blade travels on the blade wheels use the cant control handle shown in Figure 2 5 Note The cant control handle is secured with a...

Page 30: ...ol Replace the covers DANGER Never operate the sawmill without all guards and covers in place and secured Be sure the blade housing and pulley covers are in place and secure Use the safety retainer pi...

Page 31: ...r operate the sawmill without all guards and covers in place and secured Be sure the blade housing and pulley covers are in place and secure Use the safety retainer pin and cable to fasten blade housi...

Page 32: ...n the log at the foot of the ramps 3 Remove the winch cable from the log turner if applicable and route the cable over the top of the log Wrap the cable around and underneath the log Hook the cable to...

Page 33: ...steps 3 Clamp the log against the side supports 4 Lower the turner arm below the log 5 Raise the turner arm to get a new bite on the log 6 Disengage the clamp 7 The log can be turned now Repeat steps...

Page 34: ...w enough for the blade to pass over them If they are not back the clamp off slightly and push the side supports down until they are positioned below the level of your first few cuts 4 Use the optional...

Page 35: ...he bed rails See Figure 2 8 Use the up down crank to raise or lower the cutting head 3 To raise the cutting head turn the up down crank clockwise until the desired blade height is reached 4 To lower t...

Page 36: ...o see its maximum width The outer blade guide should be adjusted to clear the widest section of the log by less than 1 25 4 mm 2 Use the blade guide arm knob to adjust the outer blade guide as necessa...

Page 37: ...r motor Use the safety retainer pin and cable to fasten blade housing cov ers See Figure 2 10 The clutch brake lever is located next to the engine 4 To engage the blade pull the lever down until it lo...

Page 38: ...get a straight cut in the first part of the board feed the blade into the log at a slow speed This stops the blade from flexing and dipping up or down Use a slow speed until the whole width of the bl...

Page 39: ...s the log when returned HINT Try to stop the blade while the heel of the blade is still on the log Then bring the carriage back without adjusting the blade up This lets you keep the blade at the curre...

Page 40: ...blade life and lower production 6 As you get to the end of the log slow down the feed rate When the teeth exit the end of the log turn the feed rate all the way down and disengage the clutch brake le...

Page 41: ...ide supports halfway up the flitch height Wider flitches should be placed to the clamp side When they are edged flip them over to edge the sec ond side without disturbing the other flitches or without...

Page 42: ...of the sight gauge spring With one eye closed move your head up or down until the bottom of the sight gauge is lined up with the bottom of the blade Sight down the length of the log You should be abl...

Page 43: ...height scale is attached to the carriage head frame It includes two blade height indicators an inch scale a quarter scale The two indicators are plastic markers that move up and down with the cutting...

Page 44: ...ermine the thickness of lumber you are sawing Example You want to cut 1 25 mm random width boards from a log Position the blade for the first cut Move the carriage to an even measurement on the inch s...

Page 45: ...or It has two red dots Loosen the wing nut and angle the indicator until one of the red dots is on the nearest mark of the desired lumber thickness scale When you return the carriage for a second cut...

Page 46: ...be 1 2 gallons 3 8 7 6 liters per hour A squirt of liquid dishwashing detergent in the water bottle will help clean the blade when cutting wood with a high sap content WARNING Never use flammable fuel...

Page 47: ...the saw head over the travel rest pin 4 Lower the saw head until it is seated firmly on the rest pin See Figure 2 15 5 Continue lowering the head 3 4 19mm until it contacts the stop blocks on the mas...

Page 48: ...ure to disengage the clutch brake handle after reaching the desti nation to avoid deformation of the drive belt 8 Hook the carriage safety chain located at the bottom of the carriage to the bracket at...

Page 49: ...he trailer tires Raise all but the very front outrigger DANGER Check to be sure the saw head is resting firmly on the rest pin and mast rail stops and that the safety chain is secured before towing th...

Page 50: ...Setup Operation Preparing The Sawmill For Towing 2 2 30 2596doc091809 Setup Operation...

Page 51: ...date you perform each procedure This symbol identifies the interval hours of operation at which each maintenance pro cedure should be performed 3 1 Wear Life See Table 3 1 This chart lists estimated l...

Page 52: ...d remove any sawdust CAUTION Do not over grease Over greasing will push the seals out of the blade guide bearings 2 Check the rollers for performance and wear every blade change Make sure the rollers...

Page 53: ...chute every blade change See Figure 3 2 2 Make sure the blade screw in the top center of the C frame is 1 16 1 5 mm below the bottom of the blade If not loosen the nut and adjust the screw as necessa...

Page 54: ...heck the track scrapers as needed Make sure the scrapers fit firmly against the rail If a track scraper needs to be adjusted loosen the thumb screw push the scraper downward until it fits firmly again...

Page 55: ...and lubricate the vertical mast rails every 50 hours of operation Clean with solvent and remove any rust with a light grade sand paper or emery cloth Lubricate the mast with motor oil or automatic tra...

Page 56: ...t from rusting 2 Lubricate the log turner if equipped with a NLGI No 2 grade lithium grease every fifty hours of operation Lubricate the turner pivot pins with WD 40 or a dry lube 3 Grease the side su...

Page 57: ...hrome rods of the tensioner system with a heavy duty teflon spray lubri cant such as Gunk L508 every fifty hours of operation 2 Lubricate the tensioner screw handle with a NLGI No 2 grade lithium grea...

Page 58: ...otate the blade wheel belts and check them for wear Rotating the belts every 50 hours will give you longer belt life Replace belts as necessary Use only B57 belts manufac tured by Goodyear or Browning...

Page 59: ...ake is applied or a sudden change is noticed in the clutch handle posi tion when the clutch is disengaged To access the brake strap remove the belt cover located underneath the engine Engage the clutc...

Page 60: ...aring housing every 1000 hours of operation Remove the top and bottom oil plugs Pour an Automatic Transmission Fluid ATF such as Dexron III ATF into the top hole until it begins to flow from the botto...

Page 61: ...e top Find the chain adjusting bolt at the bottom of the mast Loosen the nut on the bolt and move the sprocket down until there is about 1 2 5 cm total deflection in the center of the chain with a 5 l...

Page 62: ...12 Feed Rope Adjust the feed rope as needed Measure the feed rope tension with the saw head all the way toward the front of the mill The middle of the rope should have 6 8 deflection To tighten pull o...

Page 63: ...very setup See Section 5 Alignment 2 Make sure all safety warning decals are readable Remove sawdust and dirt Replace any damaged or unreadable decals immediately Order decals from your Customer Servi...

Page 64: ......

Page 65: ...SECTION 3 2 EVERY BLADE CHANGE Check Blade Guide Roller Performance SEE SECTION 3 2 Remove Excess Sawdust From Blade Wheel Housings And Sawdust Chute SEE SECTION 3 3 EVERY 8 HOURS Clean And Lubricate...

Page 66: ......

Page 67: ...50 HRS 100 HRS 150 HRS 200 HRS 25O HRS 300 HRS 350 HRS 400 HRS 450 HRS 500 HRS Clean lube mast rails See Section 3 5 Grease pivot points and bearings Oil chains See Section 3 6 See Section 3 11 Check...

Page 68: ...50 HRS 600 HRS 650 HRS 700 HRS 75O HRS 800 HRS 850 HRS 900 HRS 950 HRS 1000 HRS Clean lube mast rails See Section 3 5 Grease pivot points and bearings Oil chains See Section 3 6 See Section 3 11 Check...

Page 69: ...RS 1100 HRS 1150 HRS 1200 HRS 125O HRS 1300 HRS 1350 HRS 1400 HRS 1450 HRS 1500 HRS Clean lube mast rails See Section 3 5 Grease pivot points and bearings Oil chains See Section 3 6 See Section 3 11 C...

Page 70: ...RS 1600 HRS 1650 HRS 1700 HRS 175O HRS 1800 HRS 1850 HRS 1900 HRS 1950 HRS 2000 HRS Clean lube mast rails See Section 3 5 Grease pivot points and bearings Oil chains See Section 3 6 See Section 3 11 C...

Page 71: ...RS 2100 HRS 2150 HRS 2200 HRS 225O HRS 2300 HRS 2350 HRS 2400 HRS 2450 HRS 2500 HRS Clean lube mast rails See Section 3 5 Grease pivot points and bearings Oil chains See Section 3 6 See Section 3 11 C...

Page 72: ...RS 2600 HRS 2650 HRS 2700 HRS 275O HRS 2800 HRS 2850 HRS 2900 HRS 2950 HRS 3000 HRS Clean lube mast rails See Section 3 5 Grease pivot points and bearings Oil chains See Section 3 6 See Section 3 11 C...

Page 73: ...wheels Change blade wheel belts B 57 Poor sharpening techniques See Sharpener Manual Tension too tight Tension blade to recommended specifications Blade Does Not Track Right on Drive Wheel Cant adjust...

Page 74: ...ed Adjust up down chain Vertical wear pads are too tight Adjust pads Drive belt s loose Adjust belts Lumber Is Not Square Vertical side supports not square to bed Adjust side supports Blade not parall...

Page 75: ...hin 1 8 square with the drive pulley Loosen the engine mounting bolts and rotate the engine if necessary 3 Check front to back movement of the engine does not exceed 1 4 Tighten the motor mount U bolt...

Page 76: ......

Page 77: ...re should be taken in performing these steps Sawmill alignment determines the accuracy and square ness of your cuts The sawmill alignment steps are 1 Ready the sawmill for alignment 2 Adjust the lower...

Page 78: ...s evenly supported Portable sawmills should also be setup on firm level ground LT25 Adjust the two middle outriggers on the main frame tube down just enough to lift weight from the trailer tire LT25L...

Page 79: ...the wheel at the top bottom and side of the wheel If it does not loosen and tighten the appropriate adjustment screws on the back of the wheel See Figure 5 1 See Figure 5 2 The blade wheels should be...

Page 80: ...ntrol clockwise 2 Some adjustment in blade tension may be needed to compensate for adjustments made with the cant control Adjustment with the cant control handle is usually all that is required to tra...

Page 81: ...acket and the mast v brace The shims align the v brace to the mast so that the entire face of each slide pad makes contact with the mast Be sure to keep these shims in place when performing the follow...

Page 82: ...ween one of the outer pads and the mast rail The gap should be just wide enough to slide a business card through The inner two pads should be touching the mast rails To adjust the spacing of the lower...

Page 83: ...track rollers 3 Check the inside lower rollers Both inside rollers should touch the rail so that you cannot spin them by hand If the rollers are not adjusted evenly and you can spin either one adjust...

Page 84: ...32 0 75 mm 9 Turn the horizontal adjustment nuts evenly to adjust the inner lower rollers to tilt the saw head until the blade is parallel within 1 32 0 75 mm to the pivot rail support NOTE Adjustmen...

Page 85: ...ver the clamp 3 Raise the saw head until the blade measures 14 1 2 360 mm from the top of the clamp Use a rule to determine the actual distance of the blade to the clamp See Figure 5 6 4 Adjust the fr...

Page 86: ...ORTANT Logs and large cants will damage the pivot bed rails or cause misalignment 10 Move the saw head so the blade is positioned over the center of the front main bed rail 11 Measure the distance bet...

Page 87: ...e bed rails to the blade if necessary 13 Retighen the clamping bolts 14 Without adjusting the saw head height check the three remaining main bed rails and the rear pivot rail Adjust them so that all m...

Page 88: ...e closed position loosen the lower outside roller and tighten the upper outside roller See Step 8 7 If the arm is too high in the closed position loosen the upper outside roller and tighten the lower...

Page 89: ...on the roller is about 1 8 3 0 mm from the back of the blade when the throat is 1 2 15 mm from full open 2 Close the throat to within 1 2 15 mm from fully closed Check to see that the flange is the s...

Page 90: ...lers furthest from the arm motor inward will cause the flange to move toward the blade 5 Adjusting the two inside rollers outward will cause the flange to move away from the blade 6 Adjust until the r...

Page 91: ...ed to as the inner blade guide assembly The other blade guide assembly is mounted on the idle side of the saw head It is referred to as the outer assembly and is adjustable for various widths of mater...

Page 92: ...ade 2 Install the blade guides Make sure the two set screws shown are threaded into the blade guide shaft until they touch each other See Figure 5 12 3 Loosen the bottom jam nut and tighten the top ja...

Page 93: ...flat on the blade See Figure 5 13 3 Measure the distance from the bed rail to the bottom of the tool NOTE If the sawmill is equipped with stainless steel bed rail covers be sure to measure from the bl...

Page 94: ...tilt until the measurement from the bed rail to the tool equals the other two measurements taken 10 Move the tool close to the other blade guide and repeat the previous steps NOTE If major adjustments...

Page 95: ...tened 1 Adjust the inner blade guide so the blade guide flange is approximately 1 16 1 5 mm from the back of the blade 2 Loosen one side and one top set screw shown Tap the blade guide forward or back...

Page 96: ...edge of the blade and the ruler at the end closest to the inner blade guide B 4 Measure between the back edge of the blade and the other end of the ruler A 5 The roller should be parallel to the blad...

Page 97: ...squareness of the next cut The cut will only be as square as the supports 1 Swing the side support down 2 Measure between the face of the support and the main bed tube Make measurements at both ends...

Page 98: ...o that it is vertical 3 Pull back at the top of the support to eliminate slack as if a log were being clamped against it See Figure 5 18 4 Check the angle of each support with a square on the board 5...

Page 99: ...23 5 5 16 Clamp Stop Adjustment 1 Once the side supports are aligned pivot them down to their horizontal position 2 Tie a string across the face of the side supports See Figure 5 19 3 Loosen the clamp...

Page 100: ...so that it accurately shows the position of the blade over the bed rails 1 Move the saw head so the sight gauge is positioned over a bed rail 2 Measure from the bed rail to the top of the sight gauge...

Page 101: ...al bolts to raise the outside of the saw head 1 16 1 5 mm 1 Move the saw head so the blade is positioned 14 3 4 375 mm above a bed rail 2 Adjust the lower track roller horizontal nuts until the blade...

Page 102: ...e bed rails 1 Move the saw head so the blade is positioned 14 3 4 375 mm above the bed rails by actual measurement with a rule See Figure 5 21 2 View the blade height scale with eyes level with the in...

Page 103: ...19 vertical tilt 5 17 blade guide arm operation 2 16 C chain maintenance 3 6 up down tension 3 11 clamping logs 2 13 clutch brake lever operation 2 17 L loading logs 2 12 O operation edging 2 21 sawi...

Page 104: ...ii 2596doc091809 Index INDEX troubleshooting 4 1 sawing problems 4 1 turning logs 2 13 U up down operation 2 15 sight gauge operation 2 22 W water lube operation 2 26...

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